A dynamic constitutive model for high-density rigid polyurethane foam subjected to impact loading

被引：3

作者：

Wen, Yanbo ^{[1
]}

Lai, Zhichao ^{[1
]}

Ma, Jiajia ^{[2
]}

Liu, Huan ^{[2
]}

Wang, Yin ^{[1
]}

Chi, Hui ^{[3
]}

Huang, Ruiyuan ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China

[2] Northwest Inst Mech & Elect Engn, Xianyang 712099, Peoples R China

[3] Acad Mil Sci, Res Inst Chem Def, Beijing 102205, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 387卷

基金：

中国国家自然科学基金;

关键词：

Mechanical properties; Numerical simulation; Constitutive model; Rigid polyurethane foam; Impact loading; STRAIN-RATE; BEHAVIOR;

D O I：

10.1016/j.conbuildmat.2023.131642

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study experimentally and numerically investigated the dynamic response of high-density rigid polyurethane foam (RPUF). Firstly, drop-weight tests were conducted under three impact velocities, 2.42 m/s, 3.43 m/s, and 4.85 m/s. Test results showed that the dent depth and absorbed energy rise as impact velocity increases. Then the constitutive model for high-density RPUF based on an ideal elastoplastic constitutive model is proposed based on the measured mechanical properties, including quasi-static uniaxial compression tests, quasi-static uniaxial tensile tests, triaxial confining pressure tests, and split-Hopkinson pressure bar tests. Finally, the numerical simulation of the drop-weight tests was conducted. It was shown that the proposed dynamic constitutive model can accurately describe the dynamic performance of a high-density RPUF subjected to impact loading.

引用

页数：12

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