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Experimental and numerical investigation of contact laws for the rapid simulation of low-energy impacts on laminated composite plates

机译：快速模拟叠层复合板上低能冲击的接触规律的实验和数值研究

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摘要

A computationally efficient model for the impact simulation of low energy impacts on composite laminated plate structures is developed, which combines a contact law with a new time domain spectral shear plate finite element. Various contact laws are numerically and experimentally investigated based on elastoplastic and fully-plastic indentation theory. The contact laws are correlated with quasi-static indentation test data performed on carbon/epoxy cross-ply laminates and with numerical results of a 3-D finite element analysis (FEA) indentation model with Hill failure criterion. The extracted contact laws are combined with a first-order shear plate time domain spectral finite element with explicit time integration. Obtained impact simulation results are compared with a 3-D continuum explicit FEA model and experimental results. The results demonstrate excellent accuracy of the present method, and drastically improved numerical simulation speed. (C) 2017 Elsevier Ltd. All rights reserved.
机译：建立了一种计算效率高的模型，用于低能量冲击对复合叠层板结构的冲击仿真，该模型将接触定律与新的时域谱剪力板有限元相结合。基于弹塑性和全塑性压痕理论，对各种接触定律进行了数值和实验研究。接触定律与在碳/环氧交叉层板层压板上执行的准静态压痕测试数据以及具有Hill破坏准则的3-D有限元分析（FEA）压痕模型的数值结果相关。提取的接触定律与具有显式时间积分的一阶剪切板时域谱有限元组合。将获得的冲击模拟结果与3-D连续显式有限元分析模型和实验结果进行比较。结果证明了本方法的优异准确性，并大大提高了数值模拟速度。 （C）2017 Elsevier Ltd.保留所有权利。

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