Shape and topology optimization for tailoring stress in a local region to enhance performance of piezoresistive sensors

被引：31
作者：
Xia, Qi [1 ]
Shi, Tielin [1 ]
Liu, Shiyuan [1 ]
Wang, Michael Yu [2 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Peoples R China
[2] Chinese Univ Hong Kong, Dept Mech & Automat Engn, Shatin, Hong Kong, Peoples R China
来源：
COMPUTERS & STRUCTURES | 2013年 / 114卷
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
Topology optimization; Level set method; Stress; Piezoresistive sensor; LEVEL SET METHOD; CONTINUUM STRUCTURES; SENSITIVITY-ANALYSIS; STRUCTURAL SHAPE; DESIGN;
D O I：
10.1016/j.compstruc.2012.10.020
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Based on the analysis of a typical configuration of piezoresistive sensors, the intensity and uniformity of stress in piezoresistive elements are identified as the parameters that affect the performance of a sensor. To enhance the performance, a shape and topology optimization problem is formulated to ensure the stress is high and uniform in a local region where the piezoresistive elements are placed. The optimization problem is solved via the level set based method. To compute stress accurately, artificial weak material conventionally used to mimic void is avoided in the finite element analysis. Numerical examples in two dimensions are investigated. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：98 / 105
页数：8
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