A general numerical method for the design of multi-ply variable stiffness trajectories of composite laminated shells

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-08-26 DOI:10.1016/j.compstruct.2025.119590

Kai Wang , Xiaoping Wang , Xianfeng Wang

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引用次数: 0

Abstract

This paper introduces a systematic approach for designing multi-ply trajectories in composite variable stiffness laminated shells, with the goal of improving structural performance and preventing manufacturing defects. The method encompasses the entire design process, from initial trajectory generation, trajectory offset, boundary processing, and ply discretization to curvature evaluation, and extends to multi-ply design with the four distinct angle variation patterns. The effectiveness of the proposed multi-ply trajectory design concept is demonstrated through a parabolic composite laminated thick shell. The method is also applied to special cases, such as local modification, hole, and connection problems. All examples confirm that the proposed method successfully avoids common issues such as gaps, overlaps, and wrinkles. The scheme proposed in this paper is systematic and comprehensive, extending the variable stiffness ply design to composite laminated shells and providing strong technical support for the design and manufacture of high performance composite laminated shells.

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复合材料层合壳多层变刚度轨迹设计的通用数值方法

本文介绍了一种系统的变刚度复合材料层合壳多层轨迹设计方法，以提高结构性能和防止制造缺陷。该方法涵盖了从初始轨迹生成、轨迹偏移、边界处理、层数离散化到曲率评估的整个设计过程，并扩展到具有四种不同角度变化模式的多层设计。通过抛物线型复合材料层合厚壳验证了多层弹道设计理念的有效性。该方法也适用于特殊情况，如局部改造、孔、连接等问题。所有的例子都证实了所提出的方法成功地避免了诸如间隙、重叠和褶皱等常见问题。本文提出的方案系统、全面，将变刚度层合设计扩展到复合材料层合壳，为高性能复合材料层合壳的设计和制造提供了强有力的技术支持。

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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.