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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Numerical simulation and experimental validation of ductile tearing in A106 Gr. B piping system under simulated seismic loading conditions
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Numerical simulation and experimental validation of ductile tearing in A106 Gr. B piping system under simulated seismic loading conditions

机译：A106 Gr。韧性断裂的数值模拟和实验验证。在模拟地震载荷条件下的B管道系统

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摘要

This work presents finite element ductile tearing simulation and experimental validation of a piping system with a circumferential surface cracked (SC) A106 Gr. B pipe under simulated seismic loading condition. The damage model for simulation is based on the multiaxial fracture strain energy. The parameters in the damage model are determined from tensile and fracture toughness test results under the monotonic loading condition. For the system dynamic time history analysis, the Rayleigh damping model is employed. For cyclic constitutive equations, two models were considered to confirm its sensitivity. Predicted crack initiation and ductile tearing agree well with the experimental results.
机译：这项工作提出了具有圆周表面开裂（SC）A106 Gr的管道系统的有限元延性撕裂模拟和实验验证。 B管在模拟地震载荷条件下。用于模拟的损伤模型基于多轴断裂应变能。损伤模型中的参数由单调加载条件下的拉伸和断裂韧性测试结果确定。对于系统动态时程分析，采用瑞利阻尼模型。对于循环本构方程，考虑使用两个模型来确认其敏感性。预测的裂纹萌生和韧性撕裂与实验结果吻合良好。

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