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基于Solidworks的带轴向前角复杂成形铣刀的设计与加工 被引量:1
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作者 刘松 刘华 +1 位作者 谢帮全 孔维平 《工具技术》 2009年第5期83-84,共2页
带轴向前角复杂成形铣刀的设计加工难点在于其刃口曲线的精确计算。针对设计计算中的实际问题,本文提出一种基于Solidworks三维软件设计复杂成形铣刀的方法。实践证明:该方法具有快速、准确、精度高等优点。
关键词 SOLIDWORKS 三维造模 回转曲线 截面投影
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Development Trends in Additive Manufacturing and 3D Printing 被引量:57
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作者 Bingheng Lu Dichen Li Xiaoyong Tian 《Engineering》 SCIE EI 2015年第1期85-89,共5页
Additive manufacturing and 3D printing tech-nology have been developing rapidly in the last 30 years, and indicate great potential for future development. The promising future of this technology makes its impact on tr... Additive manufacturing and 3D printing tech-nology have been developing rapidly in the last 30 years, and indicate great potential for future development. The promising future of this technology makes its impact on traditional industry unpredictable. 3D printing will propel the revolution of fabrication modes forward, and bring in a new era for customized fabrication by realizing the five "any"s: use of almost any material to fabricate any part, in any quantity and any location, for any industrial field. Innovations in material, design, and fabrication processes will be inspired by the merging of 3D-printing technology and processes with traditional manufacturing processes. Finally, 3D printing will become as valuable for manufacturing industries as equivalent and subtractive manufacturing processes. 展开更多
关键词 additive manufacturing 3D printing fabricationmodes customized fabrication innovative design
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Using structure restoration maps to comprehensively identify potential faults and fractures in compressional structures 被引量:5
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作者 欧成华 陈伟 李朝纯 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第3期677-684,共8页
Faults and fractures of multiple scales are frequently induced and generated in compressional structural system. Comprehensive identification of these potential faults and fractures that cannot be distinguished direct... Faults and fractures of multiple scales are frequently induced and generated in compressional structural system. Comprehensive identification of these potential faults and fractures that cannot be distinguished directly from seismic profile of the complex structures is still an unanswered problem. Based on the compressional structural geometry and kinematics theories as well as the structural interpretation from seismic data, a set of techniques is established for the identification of potential faults and fractures in compressional structures. Firstly, three-dimensional(3D) patterns and characteristics of the faults directly interpreted from seismic profile were illustrated by 3D structural model. Then, the unfolding index maps, the principal structural curvature maps, and tectonic stress field maps were obtained from structural restoration. Moreover, potential faults and fractures in compressional structures were quantitatively identified relying on comprehensive analysis of these three maps. Successful identification of the potential faults and fractures in Mishrif limestone formation and in Asmari dolomite formation of Buzurgan anticline in Iraq demonstrates the applicability and reliability of these techniques. 展开更多
关键词 potential fault and fracture comprehensive identification structure restoration maps 3D structural modeling compressional structures
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Seismic design and analysis of nuclear power plant structures 被引量:2
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作者 Pentti Varpasuo 《Engineering Sciences》 EI 2013年第3期10-19,共10页
The seismic design and analysis of nuclear power plant (NPP) begin with the seismic hazard assessment and design ground motion development for the site. The following steps are needed for the seismic hazard assessment... The seismic design and analysis of nuclear power plant (NPP) begin with the seismic hazard assessment and design ground motion development for the site. The following steps are needed for the seismic hazard assessment and design ground motion development:a. the development of regional seismo-tectonic model with seismic source areas within 500 km radius centered to the site;b. the development of strong motion prediction equations; c. logic three development for taking into account uncertainties and seismic hazard quantification;d. the development of uniform hazard response spectra for ground motion at the site;e. simulation of acceleration time histories compatible with uniform hazard response spectra. The following phase two in seismic design of NPP structures is the analysis of structural response for the design ground motion. This second phase of the process consists of the following steps:a. development of structural models of the plant buildings;b. development of the soil model underneath the plant buildings for soilstructure interaction response analysis;c. determination of instructure response spectra for the plant buildings for the equipment response analysis. In the third phase of the seismic design and analysis the equipment is analyzed on the basis of in-structure response spectra. For this purpose the structural models of the mechanical components and piping in the plant are set up. In large 3D-structural models used today the heaviest equipment of the primary coolant circuit is included in the structural model of the reactor building. In the fourth phase the electrical equipment and automation and control equipment are seismically qualified with the aid of the in-structure spectra developed in the phase two using large three-axial shaking tables. For this purpose the smoothed envelope spectra for calculated in-structure spectra are constructed and acceleration time is fitted to these smoothed envelope spectra. 展开更多
关键词 seismic hazard assessment design ground motion development analysis of structural response
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