Stiffness modeling of flexure parallel mechanism

被引：148

作者：

Pham, HH

Chen, IM

机构：

[1] Nanyang Technol Univ, Singapore MIT Alliance, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Sch Mech & Prod Engn, Robot Res Ctr, Singapore 639798, Singapore

来源：

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY | 2005年 / 29卷 / 04期

关键词：

flexure; parallel mechanism; stiffness; compliance;

D O I：

10.1016/j.precisioneng.2004.12.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stiffness plays an important role in the precise performance of flexure-based ultra-precision manipulation systems. The finite element method (FEM) is currently used to determine the stiffness of the flexure parallel mechanism (FPM) with specified dimensions and free shape. This paper presents the stiffness model based on the way the flexure members are connected together in serial or parallel combinations. The modeling allows one to formulate the functional relationship between stiffness and dimensions as well as the free shape of the FPM in the design process. For illustration, stiffness matrices of a double linear spring and a three degree-of-freedom (DOF) translational flexure parallel mechanism are established. The proposed analytical model is validated by FEM model and experiments. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：467 / 478

页数：12

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