Determination of Material Parameters of EVA Foam under Uniaxial Compressive Testing Using Hyperelastic Models  

作　　者：Nattapong Sangkapong Fasai Wiwatwongwana Nattawit Promma 

机构地区：[1]Department of Mechanical Engineering,Faculty of Engineering,Chiang Mai University,Chiang Mai 50300,Thailand [2]Department of Advanced Manufacturing Technology,Faculty of Engineering,Pathumwan Institute of Technology,Bangkok 10330,Thailand

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第3期800-804,共5页武汉理工大学学报（材料科学英文版）

基　　金：supported by grants funded by Department of Mechanical Engineering,Faculty of Engineering,Chiang Mai University and the Graduate School of Chiang Mai University.

摘　　要：The objective of this research was to determine the mechanical parameter from EVA foam and also investigate its behavior by using Blatz-Ko,Neo-Hookean,Mooney model and experimental test.The physical characteristic of EVA foam was also evaluated by scanning electron microscopy(SEM).The results show that Blatz-Ko and Neo-Hookean model can fit the curve at 5%and 8%strain,respectively.The Mooney model can fit the curve at 50%strain.The modulus of rigidity evaluated from Mooney model is 0.0814±0.0027 MPa.The structure of EVA foam from SEM image shows that EVA structure is a closed cell with homogeneous porous structure.From the result,it is found that Mooney model can adjust the data better than other models.This model can be applied for mechanical response prediction of EVA foam and also for reference value in engineering application.

关 键 词：hyperelastic models modulus of rigidity EVA foam curve fitting method strain energy function uniaxial compressive testing 

分 类 号：TB302.3[一般工业技术—材料科学与工程]