Visco-elastoplastic constitutive modeling of coated woven fabrics — Impact of inelastic response on structural analysis

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composite Structures Pub Date : 2025-04-11 DOI:10.1016/j.compstruct.2025.119164

L. Makhool, D. Balzani

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Abstract

A constitutive model for the highly nonlinear, anisotropic, and inelastic behavior of coated woven fabrics is proposed by suitably combining different model components from the literature. The material model accounts for viscoelasticity and plastic anisotropy at finite strains and thus, enables the geometrically nonlinear simulation of engineering constructions including prestretch processes and history-dependent load protocols. The formulation is adjusted to experimental data, specifically designed to isolate the individual aspects of the model, and it shows a decent agreement with the data. A numerical integration procedure is provided and the utilization of the model in a computational setting is addressed. Through an exemplary boundary value problem replicating a simplified roof construction, the impact of the individual features of the model on the structural response are analyzed and compared with the linear elastic model commonly used in engineering practice and a competitive hyperelastic model from the literature. As a result, the model shows significant differences to the simpler formulations and is thus found beneficial for the numerical analysis of structural problems.

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涂覆机织织物的粘弹塑性本构模型。非弹性响应对结构分析的影响

将文献中不同的模型分量合理组合，建立了涂层机织物高度非线性、各向异性和非弹性行为的本构模型。材料模型考虑了有限应变下的粘弹性和塑性各向异性，因此，可以对工程结构进行几何非线性模拟，包括预拉伸过程和历史相关负载协议。该公式根据实验数据进行了调整，专门设计用于隔离模型的各个方面，并且与数据显示出良好的一致性。给出了一个数值积分过程，并讨论了该模型在计算环境中的应用。通过一个模拟简化屋顶结构的示例性边值问题，分析了模型的个别特征对结构响应的影响，并与工程实践中常用的线弹性模型和文献中的竞争超弹性模型进行了比较。结果表明，该模型与较简单的公式有很大的不同，因此有利于结构问题的数值分析。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.