Establishment of Polymeric Films Constitutive Equations for Temperature Based on Finite Element Correction Method

文献类型： 外文期刊

第一作者： Fu, Zhiqiang

作者： Fu, Zhiqiang;Liu, Hesong;Huang, Liqiang;Wang, Hongsong;Zhang, Guipeng;Duan, Liying;Jia, Xiaoyu;Zhao, Zhiyong

作者机构：

关键词： computational materials design; finite element correction method; inflatable bag; modeling and simulation; polymeric films; temperature constitutive equation

期刊名称：JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE （ 影响因子：2.0； 五年影响因子：2.3 ）

ISSN： 1059-9495

年卷期： 2025 年

页码：

收录情况： SCI

摘要： The polymeric films exhibit a significant temperature effect, so their application is limited. This paper explores the influence law of temperature on the mechanical properties of PE/PA/PE film through the uniaxial tensile test at different temperatures (- 20 to 60 degrees C). The true stress-strain curve of the material is obtained by the finite element correction method. The exponential function can describe the trend of the elastic modulus and yield strength with temperature. A constitutive equation with a temperature term is established and verified based on the improved shape function of the Sherwood-Frost constitutive model and the Johnson-Cook constitutive model. The applicability of the proposed model was further validated by simulating the static compression of inflation bags at an extended temperature range. In the application process, this paper demonstrates the accuracy of the simulation model through the use of a scanner. The results show that the constitutive equation can effectively predict the mechanical properties of inflatable products at different temperatures in the range of experimental studies.

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