Mechanical and geometric advantages in compliant mechanism optimization

被引：27

作者：

Wang M.Y. ^{[1
]}

机构：

[1] Department of Mechanical and Automation Engineering, Chinese University of Hong Kong, Hong Kong

来源：

Frontiers of Mechanical Engineering in China | 2009年 / 4卷 / 3期

关键词：

Compliant mechanisms; Mechanical advantage; Pseudo rigid-body mechanisms; Topology optimization;

D O I：

10.1007/s11465-009-0066-1

中图分类号：

学科分类号：

摘要：

This paper presents a focused examination of the mechanical and geometric advantages in compliant mechanisms and their ramifications in the design formulations of compliant mechanisms posed as a topology optimization problem. With a linear elastic structural analysis, we quantify mechanical (and geometric) advantage in terms of the stiffness elements of the mechanism's structure. We then analyze the common formulations of compliant mechanism optimization and the role of the external springs added in the formulations. It is shown that the common formulations using mechanical (or geometric) advantage would directly emulate at best a rigid-body linkage to the true optimum design. As a result, the topology optimization generates point flexures in the resulting optimal mechanisms. A case study is investigated to demonstrate the resulting trends in the current formulations. © 2009 Higher Education Press and Springer-Verlag GmbH.

引用

页码：229 / 241

页数：12

共 27 条

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