Abstract
The present work investigates the strain rate dependent behavior of polyurethane foams and formulates a new constitutive model in order to improve the fit of the experimental data at various strain rates. The model has seven parameters that are decided by quasi-static compression tests at two strain rates. Two models for low and high density polyurethane foams are shown to give stress strain relation at various strain rates. Dynamic compression tests were carried out to give stress strain data at high strain rate and the results are compared with those of the constitutive model.
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Recommended by Guest Editor Dong-Ho Bae
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 the Department of 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. His research interests include mechanical behavior of polymeric foam, multibody dynamics and control.
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Jeong, K.Y., Cheon, S.S. & Munshi, M.B. A constitutive model for polyurethane foam with strain rate sensitivity. J Mech Sci Technol 26, 2033–2038 (2012). https://doi.org/10.1007/s12206-012-0509-1
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DOI: https://doi.org/10.1007/s12206-012-0509-1