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Size effect of lattice material and minimum weight design
  • ISSN号：0567-7718
  • 期刊名称：Acta Mechanica Sinica
  • 时间：2014
  • 页码：191-197
  • 分类：TB383[一般工业技术—材料科学与工程] V221.5[航空宇航科学与技术—飞行器设计;航空宇航科学技术]
  • 作者机构：[1]Dalian University of Technology, 116024 Dalian, China
  • 相关基金：supported by the National Natural Science Foundation of China（11372060,10902018,91216201,and 11326005）; the National Basic Research Program of China（2011CB610304）; the Major National Science and Technology Project（2011ZX02403-002）
  • 相关项目：近空间高超声速飞行器结构多学科优化理论与方法研究
作者： Yan J.|Hu W.B.|Wang Z.-H.|Duan Z.-Y.|
关键词： 晶格结构, 尺寸效应, 重量设计, 基体材料, 组织结构分析, 轴向应力, 材料构成, 均匀化方法, Lattice material Light weight design Size ef-fect Extented multiscale finite element method
中文摘要：

结构的分析和最小的重量设计上的格子材料的微观结构的尺寸效果与 extented 被学习在纸的多尺度的有限元素方法(EMsFEM ) 。与基础材料和配置的一样的卷，结构的排水量和最大的轴的应力有微观结构的不同尺寸的格子结构微杆被分析并且比较。这被指出与传统的数学 homogenization 方法不同， EMsFEM 对分析与格子材料被组成并且数量创作了的结构合适有限尺寸微杆。由格子材料组成的结构的最小的重量设计随 downscaling 计算被学习在压力限制下面他们女性微杆。最佳的设计结果证明结构的重量与基本子单元房间的尺寸的减少增加。纸在复杂工程构造为格子材料的分析和优化论述一条新途径。

英文摘要：

The size effects of microstructure of lattice materials on structural analysis and minimum weight design are studied with extented multiscale finite element method（EMsFEM） in the paper. With the same volume of base material and configuration, the structural displacement and maximum axial stress of micro-rod of lattice structures with different sizes of microstructure are analyzed and compared.It is pointed out that different from the traditional mathematical homogenization method, EMsFEM is suitable for analyzing the structures which is constituted with lattice materials and composed of quantities of finite-sized micro-rods.The minimum weight design of structures composed of lattice material is studied with downscaling calculation of EMsFEM under stress constraints of micro-rods. The optimal design results show that the weight of the structure increases with the decrease of the size of basic sub-unit cells. The paper presents a new approach for analysis and optimization of lattice materials in complex engineering constructions.

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期刊信息
  • 《力学学报：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国力学学会 中国科学院力学研究所
  • 主编：卢天健
  • 地址：北京市海淀区北四环西路15号
  • 邮编：100190
  • 邮箱：actams@cstam.org.cn
  • 电话：010-62536271
  • 国际标准刊号：ISSN：0567-7718
  • 国内统一刊号：ISSN：11-2063/O3
  • 邮发代号:2-703
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:352