Abstract
A constitutive model of polymeric foams having a four-parameter modulus function is suggested. The modulus function consists of two linear functions and a cubic polynomial of strain depending on the strain range. The parameters of the model are determined by minimizing the sum of squares of errors between the experimental data and model’s predictions. Quasi-static compression tests are done for expanded polyurethane and polypropylene foams to obtain the parameters. Dynamic compression tests give stress strain data at high strain rate and the results are compared with those of the proposed model.
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Recommended by Associate Editor Jun-Sik Kim
Kwang Young Jeong received his B.S. in Mechanical Engineering at Seoul National University in 1980; M.S. at KAIST in 1982. He received his Ph.D. in Mechanical Engineering at University of Iowa in 1991. He is currently a professor in the division of Mechanical and Automotive Engineering at Kongju National University, Korea.
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Jeong, K.Y. Constitutive modeling of polymeric foams having a four-parameter modulus function with strain rate sensitivity. J Mech Sci Technol 30, 683–688 (2016). https://doi.org/10.1007/s12206-016-0124-7
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DOI: https://doi.org/10.1007/s12206-016-0124-7