Fail-safe topology optimization for fiber-reinforced composite structures

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

Composite Structures Pub Date : 2025-03-28 DOI:10.1016/j.compstruct.2025.119145

Fei Cheng, Huanfei Jia, Wei Ding, Wenjie Zuo, Yuqiang Fang

引用次数: 0

Abstract

In this paper, we address the critical issue of fiber-reinforced composite structures (FRCS) losing functionality under local damage, which is a common safety deficiency in traditional FRCS designs. We propose a fail-safe topology optimization method for fiber-reinforced composite structures, which enables concurrent optimization of fiber orientations and structural topology while enhancing safety of FRCS. The method simulates local damage by removing the stiffness of composite materials in predefined patches, aiming to minimize structural compliance under critical damage scenarios. The fiber orientations optimization employs a discrete–continuous parameterization method to reduce the risk of falling into local optima. To address the non-differentiability of max-operator, the Kreisselmeier-Steinhauser function is employed as a substitute. Sensitivities are derived using the adjoint method. The effectiveness of this method is verified through several numerical examples.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

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.