Experimental study and numerical modelling of VHB 4910 polymer

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• 作者：Mokarram Hossain ^{mokarram.hossain@ltm.uni-erlangen.de} ; Duc Khoi Vu ^{vu@ltm.uni-erlangen.de} ; Paul Steinmann ; ^{paul.steinmann@ltm.uni-erlangen.de}
• 关键词：VHB 4910 ; Viscoelasticity ; Micro-mechanical model
• 刊名：Computational Materials Science
• 出版年：2012
• 期刊代码：31_09270256
• 类别：et
• 出版时间：June, 2012
• 卷：59
• 期：Complete
• 页码：65-74
• 文件大小：1250 K

摘要

VHB 4910 is an important polymeric material that has potential use as electro-active polymer in producing actuators. Such polymer, a member of the acrylic polymer group, is a very soft viscoelastic material. In this contribution, a comprehensive mechanical characterization of this important viscoelastic material has been carried out using different standard experiments such as single-step relaxation tests, multi-step relaxation tests and loading-unloading cyclic tests. In modelling the mechanical behaviour, a modified version of the micro-mechanically motivated Bergstr枚m-Boyce viscoelastic model has been used along with a finite linear evolution law. The model validation shows its excellent capability to predict the experimental results.