Fiber orientation in brittle materials considering post-fracture behavior

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-05-22 DOI:10.1016/j.compstruct.2025.119244

Andre Luis Ferreira da Silva, Ruben Andres Salas, Eduardo Moscatelli, Luis Fernando Nogueira de Sá, Emilio Carlos Nelli Silva

引用次数: 0

Abstract

This study presents a new framework designed to optimize fiber orientation in brittle materials, with an emphasis on post-fracture behavior. It integrates phase-field fracture modeling with topology optimization to enhance the mechanical performance of fiber-reinforced concrete by more effectively managing crack propagation.

The framework utilizes a novel constitutive model based on phase-field theory, which represents damage evolution in brittle materials. The optimization process involves a multi-objective function that balances structural stiffness with damage mitigation. Numerical simulations show that the optimized fiber orientation improves fracture resistance and stiffness, even after crack initiation, thereby extending the overall durability of the structure.

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脆性材料中考虑断裂后行为的纤维取向

本研究提出了一种新的框架，旨在优化脆性材料中的纤维取向，重点是断裂后的行为。它将相场断裂建模与拓扑优化相结合，通过更有效地管理裂缝扩展来提高纤维增强混凝土的力学性能。该框架采用了一种新的基于相场理论的本构模型，该模型代表了脆性材料的损伤演化。优化过程涉及到平衡结构刚度和损伤缓解的多目标函数。数值模拟结果表明，优化后的纤维取向提高了结构的抗断裂能力和刚度，即使在裂纹萌生后也是如此，从而延长了结构的整体耐久性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.