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.
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