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A novel approach of jet polishing for interior surface of small-grooved components using three developed setups
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作者 Qinming Gu Zhenyu Zhang +6 位作者 Hongxiu Zhou Jiaxin Yu Dong Wang Junyuan Feng Chunjing Shi Jianjun Yang Junfeng Qi 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2024年第2期428-447,共20页
It is a challenge to polish the interior surface of an additively manufactured component with complex structures and groove sizes less than 1 mm.Traditional polishing methods are disabled to polish the component,meanw... It is a challenge to polish the interior surface of an additively manufactured component with complex structures and groove sizes less than 1 mm.Traditional polishing methods are disabled to polish the component,meanwhile keeping the structure intact.To overcome this challenge,small-grooved components made of aluminum alloy with sizes less than 1 mm were fabricated by a custom-made printer.A novel approach to multi-phase jet(MPJ)polishing is proposed,utilizing a self-developed polisher that incorporates solid,liquid,and gas phases.In contrast,abrasive air jet(AAJ)polishing is recommended,employing a customized polisher that combines solid and gas phases.After jet polishing,surface roughness(Sa)on the interior surface of grooves decreases from pristine 8.596μm to 0.701μm and 0.336μm via AAJ polishing and MPJ polishing,respectively,and Sa reduces 92%and 96%,correspondingly.Furthermore,a formula defining the relationship between linear energy density and unit defect volume has been developed.The optimized parameters in additive manufacturing are that linear energy density varies from 0.135 J mm^(-1)to 0.22 J mm^(-1).The unit area defect volume achieved via the optimized parameters decreases to 1/12 of that achieved via non-optimized ones.Computational fluid dynamics simulation results reveal that material is removed by shear stress,and the alumina abrasives experience multiple collisions with the defects on the heat pipe groove,resulting in uniform material removal.This is in good agreement with the experimental results.The novel proposed setups,approach,and findings provide new insights into manufacturing complex-structured components,polishing the small-grooved structure,and keeping it unbroken. 展开更多
关键词 abrasive air jet polishing multi-phase jet polishing interior curved surface small-grooved component aluminum alloy
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THE INTERIOR TRANSMISSION EIGENVALUE PROBLEM FOR AN ANISOTROPIC MEDIUM BY A PARTIALLY COATED BOUNDARY
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作者 向建立 严国政 《Acta Mathematica Scientia》 SCIE CSCD 2024年第1期339-354,共16页
We consider the interior transmission eigenvalue problem corresponding to the scattering for an anisotropic medium of the scalar Helmholtz equation in the case where the boundary?Ωis split into two disjoint parts and... We consider the interior transmission eigenvalue problem corresponding to the scattering for an anisotropic medium of the scalar Helmholtz equation in the case where the boundary?Ωis split into two disjoint parts and possesses different transmission conditions.Using the variational method,we obtain the well posedness of the interior transmission problem,which plays an important role in the proof of the discreteness of eigenvalues.Then we achieve the existence of an infinite discrete set of transmission eigenvalues provided that n≡1,where a fourth order differential operator is applied.In the case of n■1,we show the discreteness of the transmission eigenvalues under restrictive assumptions by the analytic Fredholm theory and the T-coercive method. 展开更多
关键词 interior transmission eigenvalue anisotropic medium partially coated boundary the analytic Fredholm theory T-coercive method
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The“Digital”Approach Impact Today:Modularity in Interior Architecture
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作者 Xinyi Tian 《Journal of World Architecture》 2024年第5期60-65,共6页
Understanding digital technology requires a shift in mindset that takes into account the broader implications of design,social dynamics,environmental factors,and cultural influences.Acknowledging the fact that technol... Understanding digital technology requires a shift in mindset that takes into account the broader implications of design,social dynamics,environmental factors,and cultural influences.Acknowledging the fact that technology is not confined to the virtual domain but rather has a tangible influence on our daily lives and the surrounding environment,the extensive integration and potential of digital technologies offer a distinctive prospect to fundamentally transform our shared comprehension of architecture.Digital technologies are revolutionizing design practices,manufacturing processes,and our engagement with and understanding of the built environment,by fostering the development of novel models that promote equity and inclusivity.The application of“digital technologies”can function as a methodology for examining and expressing the possible paths of emerging digital technologies.Extrapolate the expected impact of digital technologies on the design,development,and occupancy of the environment to achieve a more sustainable future in the long run.This paper will examine the potential connections and origins of digital technology concerning modularity,as well as the implications of modularity on forthcoming architectural developments in customization. 展开更多
关键词 MODULARITY Modular architecture interior architecture CUSTOMIZATION
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Study of the Interior Design Based on Elderly People’s Psychological Behaviors and Requirements
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作者 Yu-xin Jiang Ai-li Wang 《Journal of Architectural Research and Development》 2024年第6期70-75,共6页
Nowadays,the elderly have become an increasingly large group of people in China,but still many problems exist in their living space.This paper explores the physiological and psychological behavioral changes of the eld... Nowadays,the elderly have become an increasingly large group of people in China,but still many problems exist in their living space.This paper explores the physiological and psychological behavioral changes of the elderly,studies their living space requirements,and tries to put forward targeted design strategies in response.Therefore,making a better and more reasonable living space for the elderly as well as improving their living quality,finally helping the development of elderly-friendly design in China. 展开更多
关键词 interior design Elderly-friendly design Elderly’s requirement
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Discussion on the Talent Cultivation Strategy for Interior Design in Vocational Colleges from the Perspective of Industry-Education Integration
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作者 Jingqiu Guo Qing He Jin Zeng 《Journal of Contemporary Educational Research》 2024年第10期192-198,共7页
To further enhance the effectiveness of talent cultivation for interior design in vocational colleges,it is necessary to vigorously promote the construction of an industry-education integration model.Through this mode... To further enhance the effectiveness of talent cultivation for interior design in vocational colleges,it is necessary to vigorously promote the construction of an industry-education integration model.Through this model,the roles of both enterprises and schools can be leveraged to jointly facilitate the continuous improvement of students’professional abilities and practical skills,providing a steady stream of high-quality talents for the development of the interior design field.Therefore,this paper analyzes the current issues in interior design talent cultivation in vocational colleges from the perspective of industry-education integration and proposes corresponding improvement measures. 展开更多
关键词 Industry-education integration interior design in vocational colleges Talent cultivation
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The Non-Singular Fast Terminal Sliding Mode Control of Interior Permanent Magnet Synchronous Motor Based on Deep Flux Weakening Switching Point Tracking
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作者 Xiangfei Li Yang Yin +2 位作者 Yang Zhou Wenchang Liu Kaihui Zhao 《Energy Engineering》 EI 2023年第2期277-297,共21页
This paper presents a novel non-singular fast terminal sliding mode control(NFTSMC)based on the deep flux weakening switching point tracking method in order to improve the control performance of permanent interior mag... This paper presents a novel non-singular fast terminal sliding mode control(NFTSMC)based on the deep flux weakening switching point tracking method in order to improve the control performance of permanent interior magnet synchronous motor(IPMSM)drive systems.The mathematical model of flux weakening(FW)control is established,and the deep flux weakening switching point is calculated accurately by analyzing the relationship between the torque curve and voltage decline curve.Next,a second-order NFTSMC is designed for the speed loop controller to ensure that the system converges to the equilibrium state in finite time.Then,an extended sliding mode disturbance observer(ESMDO)is designed to estimate the uncertainty of the system.Finally,compared with both the PI control and sliding mode control(SMC)by simulations and experiments with different working conditions,the method proposed has the merits of accelerating convergence,improving steady-state accuracy,and minimizing the current and torque pulsation. 展开更多
关键词 interior permanentmagnet synchronousmotor(IPMSM) flux weakening(FW)control non-singular fast terminal sliding mode control(NFTSMC) extended sliding mode disturbance observer(ESMDO)
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Mapping the Child’s Grey Interior:Authenticity of Plague Narrative in The Great Plague
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作者 SHI Long 《Journal of Literature and Art Studies》 2023年第4期272-275,共4页
The Great Plague:The Diary of Alice Paynton,London 1665-1666 adopts the realistic painting style and direct writing to the painful experience,describes the situation of the Great Plague in London truly from the perspe... The Great Plague:The Diary of Alice Paynton,London 1665-1666 adopts the realistic painting style and direct writing to the painful experience,describes the situation of the Great Plague in London truly from the perspective of children,and breaks people’s cognitive expectation of children’s literature,the construction of children’s Gray inner world is completed behind the true description of the Great Plague in London with the true brushwork,which presents a different world of childlike innocence.Despite the importance of epidemics writing in literature,the child’s diary perspective of them is one of the least developed of Plague Narrative.Only when authenticity and the child’s grey interior are integrated will we reveal a true picture of society as it was. 展开更多
关键词 The Great Plague The Diary of Alice Paynton AUTHENTICITY plague narrative the child’s grey interior
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Ideological and Political Integration Strategies in Interior Design Professional Courses Under the Background of Innovation and Entrepreneurship
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作者 Linzi She 《Journal of Contemporary Educational Research》 2023年第10期150-155,共6页
Based on the ideological and political requirements of interior design professional courses,exploring the integrated education path of professional plus innovation and entrepreneurship requires first expanding the ide... Based on the ideological and political requirements of interior design professional courses,exploring the integrated education path of professional plus innovation and entrepreneurship requires first expanding the ideological and political content of professional introductory courses,core courses,and expanded courses.Then,we will reshape the curriculum system based on the principle of connecting professional teaching and ideological and political courses,focusing on the realistic principle of talent needs,striving for student growth,adjusting the course content,optimizing the teaching model,and transforming teaching through in-and out-of-class practice and counterpoint guidance. 展开更多
关键词 interior design major Curriculum ideological and political education Innovation and entrepreneurship Teaching strategies
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Reform and Practice of Talent Training of Architectural Interior Design Professionals in Higher Vocational Skills Competition: Taking Chongqing Energy Vocational College as an Example
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作者 Xiao Han 《Journal of Contemporary Educational Research》 2023年第5期11-16,共6页
For higher vocational colleges,skills competition is an important indicator of professional personnel training quality.In this paper,the architectural interior design professional skills competition in Chongqing Energ... For higher vocational colleges,skills competition is an important indicator of professional personnel training quality.In this paper,the architectural interior design professional skills competition in Chongqing Energy Vocational College is taken as an example,the many years of teaching and competition experience are taken into account,the problems existing in the cultivation of architectural interior design professionals in higher vocational colleges are analyzed,and corresponding solutions are proposed. 展开更多
关键词 Vocational skills competition Architectural interior design Teaching reform
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Research on the Interior Decoration Characteristics of Peking Union Medical College Phase I Project
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作者 Qiqi Xiong Bo Zhang +2 位作者 Yi Zheng Xin Li Yaqing Liang 《Journal of Architectural Research and Development》 2023年第1期33-42,共10页
Peking Union Medical College was founded in the late Qing Dynasty and the early Republic of China.Since then,society and politics have been rapidly changing,and its architectural aesthetics reflect the idea of advocat... Peking Union Medical College was founded in the late Qing Dynasty and the early Republic of China.Since then,society and politics have been rapidly changing,and its architectural aesthetics reflect the idea of advocating the West and inheriting tradition.Through research and actual investigation,this paper summarizes the current status of its building from two aspects,interior decoration art and interior decoration technology,analyzes the interior decoration characteristics of Peking Union Medical College Phase I Project,and records the archives of Peking Union Medical College’s decoration technology. 展开更多
关键词 Peking Union Medical College Healthcare architecture interior decoration features
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Teaching Strategy of Higher Vocational Interior Design Based on “Internet Plus” Thinking
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作者 Linzi She 《Journal of Contemporary Educational Research》 2023年第6期7-11,共5页
“Internet Plus”thinking has been widely adopted in the teaching of interior design in colleges and universities,and its application has significant implications that cannot be disregarded.“Internet Plus”thinking n... “Internet Plus”thinking has been widely adopted in the teaching of interior design in colleges and universities,and its application has significant implications that cannot be disregarded.“Internet Plus”thinking not only realizes the innovation of interior design teaching but also significantly improves the level and quality of teaching.Through an analysis of the advantages of“Internet Plus”education platform and the current situation of higher vocational interior design teaching,effective strategies for higher vocational interior design teaching based on“Internet Plus”thinking are proposed in this paper in hope that this study will contribute to the efficient development of interior design teaching activities. 展开更多
关键词 “Internet Plus”thinking Teaching strategy interior design
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The Hiding Characteristic of F-interior Hiding Image and Its Applications
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作者 邱育锋 任雪芳 陈保会 《Journal of Donghua University(English Edition)》 EI CAS 2010年第2期237-241,共5页
By using function one direction S-rough sets,the concept of F-interior hiding image is presented; the theorem of F-interior hiding and the recognition criteria of interior hiding are proposed; and the applications of ... By using function one direction S-rough sets,the concept of F-interior hiding image is presented; the theorem of F-interior hiding and the recognition criteria of interior hiding are proposed; and the applications of F-interior hiding image are given. F-interior hiding image is a new application area of function S-rough sets,and function S-rough sets is a new theory and new tools for iconology research. 展开更多
关键词 function one direction S-rough sets F-interior hiding image interior hiding theorem interior hiding recognition application
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Cluster Warhead Dispersing Technique and Its Interior Ballistic Calculation 被引量:8
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作者 谭大成 袁曾凤 《Journal of Beijing Institute of Technology》 EI CAS 2000年第3期273-277,共5页
Cluster warhead dispersing technique is analyzed with gas dynamic theory. It is seen that the front cover opening and two stage dispersing system is suitable for guided sub missiles whose number is not so large. Th... Cluster warhead dispersing technique is analyzed with gas dynamic theory. It is seen that the front cover opening and two stage dispersing system is suitable for guided sub missiles whose number is not so large. The interior ballistic performances of this system are calculated with numerical calculation method. The performances such as the pressure in the pressure chambers and the velocity of the sub missiles are obtained in curve form. 展开更多
关键词 cluster warhead DISPERSING interior ballistics EJECTION
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An Improved Affine-Scaling Interior Point Algorithm for Linear Programming 被引量:1
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作者 Douglas Kwasi Boah Stephen Boakye Twum 《Journal of Applied Mathematics and Physics》 2019年第10期2531-2536,共6页
In this paper, an Improved Affine-Scaling Interior Point Algorithm for Linear Programming has been proposed. Computational results of selected practical problems affirming the proposed algorithm have been provided. Th... In this paper, an Improved Affine-Scaling Interior Point Algorithm for Linear Programming has been proposed. Computational results of selected practical problems affirming the proposed algorithm have been provided. The proposed algorithm is accurate, faster and therefore reduces the number of iterations required to obtain an optimal solution of a given Linear Programming problem as compared to the already existing Affine-Scaling Interior Point Algorithm. The algorithm can be very useful for development of faster software packages for solving linear programming problems using the interior-point methods. 展开更多
关键词 interior-POINT Methods Affine-Scaling interior Point Algorithm Optimal SOLUTION Linear Programming Initial Feasible TRIAL SOLUTION
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Primary Study on the Artistic Value of Interior Decoration of Ancient Huizhou Folk Houses
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作者 谢震林 谢珂 《Journal of Landscape Research》 2009年第4期35-38,65,共5页
From the creation,materials,colors and technical artistic characteristics of exterior and exterior spatial decoration,the artistic value of ancient Huizhou folk houses were analyzed.
关键词 ANCIENT HUIZHOU FOLK houses interior DECORATION Traditional culture ARTISTIC value
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Enlightenment of Modern Interior Design from the Interior Decoration of Ancient Huizhou Vernacular Dwellings
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作者 谢震林 谢珂 《Journal of Landscape Research》 2009年第7期54-58,共5页
Through analyzing the basic structure of ancient Huizhou vernacular dwellings and the spatial order of interior decoration,this study rethought profoundly about modern interior design and put forward the inheritance o... Through analyzing the basic structure of ancient Huizhou vernacular dwellings and the spatial order of interior decoration,this study rethought profoundly about modern interior design and put forward the inheritance of traditional methods in interior decoration. 展开更多
关键词 Ancient HUIZHOU VERNACULAR DWELLINGS TERRITORIAL culture Modern interior design INHERITANCE Development
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The Application of Landscape Plants in Humanized Interior Environmental Design
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作者 李青松 马春喜 《Journal of Landscape Research》 2009年第10期57-60,共4页
Landscape plants play a role of decorating and beautifying the indoor environment.From the perspective of humanization,the functions and application patterns of landscape plants in the interior environmental design ar... Landscape plants play a role of decorating and beautifying the indoor environment.From the perspective of humanization,the functions and application patterns of landscape plants in the interior environmental design are analyzed in this study,and finally the application rules of landscape plants in the humanized interior environmental design are summarized. 展开更多
关键词 LANDSCAPE PLANTS HUMANIZATION interior design LANDSCAPE environment
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Signature of helium rain and dilute cores in Jupiter’s interior from empirical equations of state
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作者 DongDong Ni 《Earth and Planetary Physics》 CSCD 2020年第2期111-119,共9页
Measurements of Jupiter’s gravity field by Juno have been acquired with unprecedented precision, but uncertainties in the planet’s hydrogen–helium equation of state(EOS) and the hydrogen–helium phase separation ha... Measurements of Jupiter’s gravity field by Juno have been acquired with unprecedented precision, but uncertainties in the planet’s hydrogen–helium equation of state(EOS) and the hydrogen–helium phase separation have meant that differences remain in the interior model predictions. We deduce an empirical EOS from Juno gravity field observations in terms of the hydrostatic equation and then investigate the structure and composition of Jupiter by comparison of the empirical EOS with Jupiter’s adiabats obtained from the physical EOS. The deduced helium mass fraction suggests depletion of helium in the outermost atmosphere and helium concentration in the inner molecular hydrogen region, which is a signature of helium rain in Jupiter’s interior. The deduced envelope metallicity(the heavy-element mass fraction) is as high in the innermost envelope as 11–13 times the solar value. Such a high metallicity provides sharp support to the dilute core model with the heavy elements dissolved in hydrogen and expanded outward. No matter how the core mass is varied, the empirical EOS derived from the two-layer interior model generally suggests higher densities in the innermost envelope than does the best-fit Jupiter’s adiabat;this result is, again, a signature of dilute cores in Jupiter’s interior. Moreover, no matter the core mass,the empirical EOS is found to exhibit an inflexion point in the deep interior, around 10 Mbar, which can be explained as the combined effect of helium concentration in the upper part and dilute cores in the lower part. 展开更多
关键词 Jupiter interior abundances interiors GEOPHYSICS
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Effects of interior ballistic factors on dispersion of central blast tube cluster munitions 被引量:2
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作者 袁利东 王志军 吴国东 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2015年第4期336-341,共6页
This article uses nonlinear dynamics analysis software AUTODYN-2D to establish an interior ballistic model of cen- tral blast tube cluster munitions dispersion. The interior ballistic process of the central blast tube... This article uses nonlinear dynamics analysis software AUTODYN-2D to establish an interior ballistic model of cen- tral blast tube cluster munitions dispersion. The interior ballistic process of the central blast tube duster munitions dispersion was simulated. The state of submunitions dispersion was obtained as interior ballistic conditions changed. The effect of shell stress groove on shell opening was discussed. The shell with stree groove is helpful for submunitions dispensing effectively and uniformly. The effect of liner material on submunitions dispersing was discussed. It can be found that foam liner can reduce the interior ballistic pressure, increase the pressure action time, reduce the acceleration of the submunitions and increase the sub- munitions dispersing velocity. These results provide some reference for the theory and experiment research of the central blast tube cluster munitions dispersion. 展开更多
关键词 cluster munitions interior ballistics AUTODYN
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Sound Source Localisation for a High-Speed Train and Its Transfer Path to Interior Noise 被引量:12
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作者 Jie Zhang Xinbiao Xiao +1 位作者 Xiaozhen Sheng Zhihui Li 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2019年第4期168-183,共16页
Noise is one of the key issues in the operation of high-speed railways, with sound source localisation and its transfer path as the two major aspects. This study investigates both the exterior and interior sound sourc... Noise is one of the key issues in the operation of high-speed railways, with sound source localisation and its transfer path as the two major aspects. This study investigates both the exterior and interior sound source distribution of a high-speed train and presents a method for performing the contribution analysis of airborne sound with regard to the interior noise. First, both exterior and interior sound source locations of the high-speed train are identified through in-situ measurements. Second, the sound source contribution for di erent regions of the train and the relationships between the exterior and interior noises are analysed. Third, a method for conducting the contribution analysis of airborne sound with regard to the interior noise of the high-speed train is described. Lastly, a case study on the sidewall area is carried out, and the contribution of airborne sound to the interior noise of this area is obtained. The results show that, when the high-speed train runs at 310 km/h, dominant exterior sound sources are located in the bogie and pantograph regions, while main interior sound sources are located at the sidewall and roof. The interior noise, the bogie area noise and the sound source at the middle of the coach exhibit very similar rates of increase with increasing train speed. For the selected sidewall area, structure-borne sound dominates in most of the 1/3 octave bands. 展开更多
关键词 High-speed TRAIN interior noise SOUND transfer path Noise source identification EXTERIOR noise AIRBORNE SOUND
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