以某款客车的发动机热管理系统作为研究对象,以客车14常用工况点下水泵和风扇的平均功耗作为发动机热管理系统的经济性评价指标,并结合冷却性能指标和限制性指标,建立发动机热管理系统的综合评价体系。以此评价体系作为评价指标,运用GT-...以某款客车的发动机热管理系统作为研究对象,以客车14常用工况点下水泵和风扇的平均功耗作为发动机热管理系统的经济性评价指标,并结合冷却性能指标和限制性指标,建立发动机热管理系统的综合评价体系。以此评价体系作为评价指标,运用GT-Drive和GT-Cool软件,以仿真模拟和试验相结合的方法,对散热器、水泵和风扇的不同选型方案进行优化匹配。结果表明,系统功耗由2.61 k W降低到1.60 k W,沸腾环境温度值由49℃提升到60℃。展开更多
In this paper, workflow technology is firstly applied to the cabinet dyeing order system for cabinet dyeing unit. The system setup workflow models which conform to the existing system and resource and the system adopt...In this paper, workflow technology is firstly applied to the cabinet dyeing order system for cabinet dyeing unit. The system setup workflow models which conform to the existing system and resource and the system adopts flexible workflow process mechanism to enhance the adaptability and opening and solve the exception and abnormality manipulation. The results show that it can not only provide the better dyeing order process, but also set dyer free from the fussy daily business and predigest task flow and heighten production efficiency.展开更多
Pile-slab structure roadbed is a new form of ballastless track for high speed railway. Due to lack of corresponding design code, based on the analysis of its structure characteristics and application requirements, it ...Pile-slab structure roadbed is a new form of ballastless track for high speed railway. Due to lack of corresponding design code, based on the analysis of its structure characteristics and application requirements, it is proposed to carry out load effect combination according to ultimate limit state and serviceability limit state, and the most unfavorable combination of each state is chosen to carry through design calculation for pile-slab structure. Space model of pile-slab structure can be simplified as a plane flame model, by using the orthogonal test method, and the design parameter of pile-slab structure is optimized. Moreover, based on the engineering background of Suining-Chongqing high-speed railway, the dynamic deformation characteristics of pile-slab structure roadbed are further researched by carrying on the indoor dynamic model test. The test results show that the settlement after construction of subgrade satisfies the requirement of settlement control to build ballastless track on soil subgrade for high-speed railway. Slab structure plays the role of arch shell as load is transmitted from slab to pile, and the vertical dynamic stress of subgrade soil is approximately of ＂K＂ form distribution with the depth. The distribution of pile stress is closely related to soil characteristics, which has an upset triangle shape where the large dynamic stress is at the top. Pile compared with soil shares most dynamic stress. Pile structure expands the depth of the dynamic response of subgrade has limited effect on dynamic response. These results can provide subgrade. and improves the stress of subgrade soil, and the speed of train scientific basis for pile-slab structure roadbed used on soil展开更多
Based on the relationship between the diameter and buried depth of goal, the authors establish the forward modeling by Res2dmod and inverse the model by Res2dinv. Thus, three kinds of models are obtained ： the model ...Based on the relationship between the diameter and buried depth of goal, the authors establish the forward modeling by Res2dmod and inverse the model by Res2dinv. Thus, three kinds of models are obtained ： the model of single resistivity anomalous body, model of double different distance resistivity anomalous body, and model of layered resistivity anomalous body. Using forward and inversion, the image of detection is simulated, and the reliability is proved by comparing with the engineering examples.展开更多
The tunable excitation patterns and emission modes associated with luminescence materials,such as downshifting luminescence(DSL),upconversion luminescence(UCL),and mechanoluminescence(ML)play an important role in info...The tunable excitation patterns and emission modes associated with luminescence materials,such as downshifting luminescence(DSL),upconversion luminescence(UCL),and mechanoluminescence(ML)play an important role in information encryption and anticounterfeiting.However,many reported luminescence materials usually show fixed excitation patterns and unimodal output,resulting in a low anticounterfeiting level.Therefore,developing luminescence materials with multitemporal,variation excitation patterns and multiple emission modes remains a considerable challenge,particularly in a single matrix.This study reports a highly integrated multifunctional material(color-tunable(DSL:amaranth→blue),tunable excitation patterns(250±380 nm)and quadrimodal(DSL,UCL,persistent luminescence(PersL),and ML)).The as-obtained versatile LaCaAl_(3)O_(7):Eu^(2+)/^(3+),Yb^(3+),Er^(3+)materials are suitable for obtaining elastomer films with the characteristics of water resistance,stretchability,and flexibility and synchronously offer multidimensional information encryptions and anticounterfeiting using common tools(ultraviolet light,nearinfrared light,and pen).These results provide a unique insight into advanced multimodal anticounterfeiting.展开更多
文摘以某款客车的发动机热管理系统作为研究对象,以客车14常用工况点下水泵和风扇的平均功耗作为发动机热管理系统的经济性评价指标,并结合冷却性能指标和限制性指标,建立发动机热管理系统的综合评价体系。以此评价体系作为评价指标,运用GT-Drive和GT-Cool软件,以仿真模拟和试验相结合的方法,对散热器、水泵和风扇的不同选型方案进行优化匹配。结果表明,系统功耗由2.61 k W降低到1.60 k W,沸腾环境温度值由49℃提升到60℃。
文摘In this paper, workflow technology is firstly applied to the cabinet dyeing order system for cabinet dyeing unit. The system setup workflow models which conform to the existing system and resource and the system adopts flexible workflow process mechanism to enhance the adaptability and opening and solve the exception and abnormality manipulation. The results show that it can not only provide the better dyeing order process, but also set dyer free from the fussy daily business and predigest task flow and heighten production efficiency.
基金Foundation item： Project（2013CB036405） supported by the National Basic Research Program of China Project（KZZD-EW-05） supported by the Key Research Program of the Chinese Academy of Sciences
文摘Pile-slab structure roadbed is a new form of ballastless track for high speed railway. Due to lack of corresponding design code, based on the analysis of its structure characteristics and application requirements, it is proposed to carry out load effect combination according to ultimate limit state and serviceability limit state, and the most unfavorable combination of each state is chosen to carry through design calculation for pile-slab structure. Space model of pile-slab structure can be simplified as a plane flame model, by using the orthogonal test method, and the design parameter of pile-slab structure is optimized. Moreover, based on the engineering background of Suining-Chongqing high-speed railway, the dynamic deformation characteristics of pile-slab structure roadbed are further researched by carrying on the indoor dynamic model test. The test results show that the settlement after construction of subgrade satisfies the requirement of settlement control to build ballastless track on soil subgrade for high-speed railway. Slab structure plays the role of arch shell as load is transmitted from slab to pile, and the vertical dynamic stress of subgrade soil is approximately of ＂K＂ form distribution with the depth. The distribution of pile stress is closely related to soil characteristics, which has an upset triangle shape where the large dynamic stress is at the top. Pile compared with soil shares most dynamic stress. Pile structure expands the depth of the dynamic response of subgrade has limited effect on dynamic response. These results can provide subgrade. and improves the stress of subgrade soil, and the speed of train scientific basis for pile-slab structure roadbed used on soil
文摘Based on the relationship between the diameter and buried depth of goal, the authors establish the forward modeling by Res2dmod and inverse the model by Res2dinv. Thus, three kinds of models are obtained ： the model of single resistivity anomalous body, model of double different distance resistivity anomalous body, and model of layered resistivity anomalous body. Using forward and inversion, the image of detection is simulated, and the reliability is proved by comparing with the engineering examples.
基金supported by the National Natural Science Foundation of China(21871122 and 21431002)the Fundamental Research Funds for the Central Universities(lzujbky-2021-kb17)。
文摘The tunable excitation patterns and emission modes associated with luminescence materials,such as downshifting luminescence(DSL),upconversion luminescence(UCL),and mechanoluminescence(ML)play an important role in information encryption and anticounterfeiting.However,many reported luminescence materials usually show fixed excitation patterns and unimodal output,resulting in a low anticounterfeiting level.Therefore,developing luminescence materials with multitemporal,variation excitation patterns and multiple emission modes remains a considerable challenge,particularly in a single matrix.This study reports a highly integrated multifunctional material(color-tunable(DSL:amaranth→blue),tunable excitation patterns(250±380 nm)and quadrimodal(DSL,UCL,persistent luminescence(PersL),and ML)).The as-obtained versatile LaCaAl_(3)O_(7):Eu^(2+)/^(3+),Yb^(3+),Er^(3+)materials are suitable for obtaining elastomer films with the characteristics of water resistance,stretchability,and flexibility and synchronously offer multidimensional information encryptions and anticounterfeiting using common tools(ultraviolet light,nearinfrared light,and pen).These results provide a unique insight into advanced multimodal anticounterfeiting.
