EFFECTS OF STRETCHING RATE AND SIZE ON THE RUPTURE OF ACRYLIC DIELECTRIC ELASTOMER

Author:

LI TIEFENG12,LI WUQIONG3,ZOU ZHANAN12,HONG ZHANGLIAN3,QU SHAOXING12

Affiliation:

1. Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China

2. Soft Matter Research Center (SMRC), Zhejiang University, Hangzhou 310027, China

3. Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Abstract

Dielectric elastomer (DE) transducers usually undergo large deformation, as well as possess hyperelastic and viscoelastic behaviors. This paper presents an experimental study of rupture behavior of acrylic DE (3M-VHB 9473) membranes with various stretching rates, specimen dimensions and initial flaw sizes. The force–displacement curves, crack propagation behaviors of specimens subjected to pure-shear loading are investigated experimentally. It is observed that different stretching rate and initial flaw size drastically affect the critical rupture force and crack propagating velocity. Finite element analysis is carried out to calculate the strain distribution and the J integral.

Publisher

World Scientific Pub Co Pte Lt

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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