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Using Virtual Tests to Complete the Description of a Three-Dimensional Orthotropic Material

机译：使用虚拟测试完成三维正交异性材料的描述

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摘要

Generalized constitutive models, which can be used in explicit finite-element analysis, are being developed to accurately model composite systems under impact conditions. These models require extensive characterization of the composite material as input-the more sophisticated the model, the larger the amount of required input data. The authors discuss details of the characterization data required for a generalized three-dimensional orthotropic elastoplastic material model that is under development to simulate the impact response of composite materials. The material response data are generated using virtual testing methods in an analytical approach based on the generalized method of cells and a finite-element system. These methods not only complement actual test data by providing an additional layer of verification for experimentally generated stress-strain curves; they also fill in gaps caused by lack of appropriate experimental data (due either to the required experiments not being carried out or to the experiments being too complex to carry out). Verification and validation test cases demonstrate the capabilities of the developed system and show how a general virtual testing framework can be used for characterizing orthotropic composites. (C) 2017 American Society of Civil Engineers.
机译：正在开发可用于显式有限元分析的广义本构模型，以在冲击条件下准确地对复合系统进行建模。这些模型需要对复合材料作为输入进行广泛的表征-模型越复杂，所需输入数据的数量就越大。作者讨论了用于模拟复合材料冲击响应的广义三维正交各向异性弹塑性材料模型所需的特征数据的详细信息。物料响应数据是在基于单元格的广义方法和有限元系统的分析方法中使用虚拟测试方法生成的。这些方法不仅通过为实验生成的应力-应变曲线提供额外的验证层，还可以补充实际的测试数据；它们还填补了由于缺乏适当的实验数据而导致的空白（由于未进行所需的实验或由于实验过于复杂而无法进行）。验证和验证测试案例展示了所开发系统的功能，并展示了如何使用通用虚拟测试框架来表征正交异性复合材料。 （C）2017年美国土木工程师学会。

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  • 来源
    《Journal of aerospace engineering》 |2017年第5期|04017025.1-04017025.14|共14页
  • 作者

    Harrington Joseph; Hoffarth Canio; Rajan Subramaniam D.; Goldberg Robert K.; Carney Kelly S.; DuBois Paul; Blankenhorn Gunther;

  • 作者单位

    Arizona State Univ, Sch Sustainable Engn, Tempe, AZ 85287 USA;

    Arizona State Univ, Sch Sustainable Engn, Tempe, AZ 85287 USA;

    Arizona State Univ, Sch Sustainable Engn, Tempe, AZ 85287 USA;

    NASA, Glenn Res Ctr, Struct & Mat Div, 21000 Brookpk Rd, Cleveland, OH 44135 USA;

    George Mason Univ, 4400 Univ Dr, Fairfax, VA 22030 USA;

    George Mason Univ, 4400 Univ Dr, Fairfax, VA 22030 USA;

    Livermore Software Technol Corp, 7374 Los Positas Rd, Livermore, CA 94551 USA;

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