Research on Finite Element Simulation of the High-density Polyethylene Under Large Deformation
CHEN Zipeng1,2, SHI Shaoqing1,2, LUO Weiming1, SUN Jianhu1, FAN Lanxin3
1 Department of Civil Engineering, Logistical Engineering University, Chongqing 401311; 2 Chongqing Engineering Technology Research Center for Geological Disaster Prevention and Control, Chongqing 401311; 3 College of Civil Engineering, Hunan University, Changsha 410082
Abstract: In order to figure out the problems that FEM of HDPE is not easily stable with convergence and its constitutive model is relatively sophisticated, this paper conducted uniaxial tensile test and FEM to analyze the HDPE sheet. By comparing the results of tensile experiment and finite element simulation, it can be inferred that the non-linear Maxwell model was suitable for the situation under small deformation, but under large tensile deformation, the results of Maxwell model were quite different from expe-riments. However, the calculated results of Kwon model were consistent with experiment under both small tensile deformation and large deformation. Meanwhile, this paper also optimized the parameters of Kwon model. With the optimized parameters under 100 mm/min and 150 mm/min stretching rates, reference value could be reflected for the FEM of HDPE sheet under large deformation. Besides, analysis about the stress and strain in the sheet element indicated that the HDPE was under uniaxial tension, the stress and strain were not evenly distributed.The max stress and max strain located in the central area, which also explained the phenomenon that the sheet always broke in the middle.
陈自鹏, 石少卿, 罗伟铭, 孙建虎, 范兰心. 高密度聚乙烯材料在大变形条件下的数值模拟研究*[J]. 《材料导报》期刊社, 2017, 31(20): 135-139.
CHEN Zipeng, SHI Shaoqing, LUO Weiming, SUN Jianhu, FAN Lanxin. Research on Finite Element Simulation of the High-density Polyethylene Under Large Deformation. Materials Reports, 2017, 31(20): 135-139.
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2017, Vol. 31 
