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Validation of a 3D damage model for predicting the response of composite structures under crushing loads

机译：用于预测复合结构在压碎载荷下的响应的3D损伤模型的验证

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摘要

A 3D intralaminar continuum damage mechanics based material model, combining damage mode interaction and material nonlinearity, was developed to predict the damage response of composite structures undergoing crush loading. This model captures the structural response without the need for calibration of experimentally determined material parameters. When used in the design of energy absorbing composite structures, it can reduce the dependence on physical testing. This paper validates this model against experimental data obtained from the literature and in-house testing. Results show that the model can predict the force response of the crushed composite structures with good accuracy. The simulated energy absorption in each test case was within 12% of the experimental value. Post-crush deformation and the damage morphologies, such as ply splitting, splaying and breakage, were also accurately reproduced. This study establishes the capability of this damage model for predicting the responses of composite structures under crushing loads. (C) 2016 Elsevier Ltd. All rights reserved.
机译：建立了基于3D层内连续介质损伤力学的材料模型，结合了损伤模式相互作用和材料非线性，以预测承受挤压载荷的复合结构的损伤响应。该模型无需校准实验确定的材料参数即可捕获结构响应。当用于吸能复合结构的设计时，它可以减少对物理测试的依赖。本文根据从文献和内部测试获得的实验数据验证了该模型。结果表明，该模型可以较好地预测复合材料结构的受力情况。在每个测试案例中，模拟的能量吸收都在实验值的12％以内。破碎后的变形和损伤形态（如层裂，张开和断裂）也得到了精确的再现。这项研究建立了这种损伤模型预测复合结构在压碎载荷下的响应的能力。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Composite Structures》 |2016年第7期|65-73|共9页
  • 作者

    Chiu Louis N. S.; Falzon Brian G.; Chen Bernard; Yan Wenyi;

  • 作者单位

    Monash Univ, Dept Mech & Aerosp Engn, Clayton Campus, Vic 3800, Australia|Cooperat Res Ctr Adv Composite Struct, 1-320 Lorimer St, Port Melbourne, Vic 3207, Australia;

    Queens Univ Belfast, Sch Mech & Aerosp Engn, Belfast BT9 5AH, Antrim, North Ireland;

    Monash Univ, Dept Mech & Aerosp Engn, Clayton Campus, Vic 3800, Australia;

    Monash Univ, Dept Mech & Aerosp Engn, Clayton Campus, Vic 3800, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Damage mechanics; Finite element analysis; Crushing response; Energy absorption;

    机译：损伤力学;有限元分析;破碎响应;能量吸收;

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