Improved Sherwood-Frost phenomenological constitutive model suitable for polymethacrylimide foam under uniaxial compression

• Autorzy: Cen Qianying , Liu Ling

Identyfikatory

DOI

10.15632/jtam-pl/195840

• Języki publikacji: EN

Abstrakty

EN

To investigate the stress-strain response of polymethacrylimide (PMI) foam under uniaxial compression, an improved phenomenological constitutive model based on Sherwood-Frost model is fitted from the compressive stress-strain curves of PMI foam. Firstly, new function terms are proposed to describe the effects of temperature, density and strain-rate. Then, the model parameters are determined. Finally, compression experiments and numerical simulation are conducted on PMI foams at different temperatures, densities and strain-rates to verify the modified model. The results show that it can successfully predict the compressive mechanical response of PMI foam if the effects of density, temperature and strain-rate are considered.

Słowa kluczowe

EN

polymethacrylimide foam; constitutive model; modified Sherwood-Frost model; PMI

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2025
• Tom: Vol. 63 nr 1
• Strony: 91--101
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Cen Qianying

• School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, China

autor

Liu Ling

• School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, China

Bibliografia

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