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工程力学  2013 

冲击荷载作用下岩土材料能量耗散的有限元分析

DOI: 10.6052/j.issn.1000-4750.2012.01.0018, PP. 160-164

Keywords: 岩土工程材料,碎石,粘土,能量耗散,落物,刺入深度,Ls-DYNA/ANSYS

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Abstract:

当海上平台落物或商船抛锚会对海底管线造成一定的损害。通常的防护措施是管线的上部覆盖一层岩土材料,耗散部分落物冲击。运用非线性有限元程序Ls-DYNA/ANSYS对岩土材料耗散冲击物产生的能量的能力进行了数值模拟。对于碎石层的计算结果与挪威海洋工程规范中依据实验得到的结果一致,验证了该程序用于研究材料层能量消散能力方面的适用性。由于缺乏与粘土相关的研究,该文采用Ls-DYNA/ANSYS程序对粘土材料层消散能量能力进行了分析计算,成果可供海底管线保护设计的参考。

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