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The inelastic quasi-static response of sandwich structures to local loading

机译:夹层结构对局部载荷的非弹性准静态响应

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The paper addresses the inelastic quasi-static response of sandwich beams and panels with foam core to localized loads. The plane and axisymmetric formulations for local indentation or local low-velocity impact by a rigid body are considered; no overall bending is assumed. The governing equations for the face are derived using the Kirchhoff-Love static theory under the assumption that the core crushing follows elastic-ideally-plastic behavior. Analytical solutions are constructed on the basis of the principle of minimum work. The solutions allow predicting the face deflection, size of crushed core area and contact force. In general, the solutions are in good agreement with experimental data and finite element analysis.
机译:本文讨论了夹芯梁和泡沫芯板对局部载荷的非弹性准静态响应。考虑了由刚体引起的局部压痕或局部低速冲击的平面和轴对称公式;没有假定整体弯曲。在假设岩心破碎遵循弹性理想塑性行为的假设下,使用基尔霍夫-洛夫静态理论推导了工作面控制方程。分析解决方案是基于最小工作原理构建的。该解决方案可以预测表面变形,压碎的铁芯面积大小和接触力。通常,这些解决方案与实验数据和有限元分析非常吻合。

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