Dynamic mechanical response of corrugated & flat rolling (CFR) titanium/steel composite plate under ballistic impact

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

Composite Structures Pub Date : 2025-08-21 DOI:10.1016/j.compstruct.2025.119587

Zirui Liang , Luze Ren , Jingyu Liu , Chuanhao Lu , Zhongwei Zhang , Yong Cao

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引用次数: 0

Abstract

This study systematically investigates the dynamic mechanical behavior of corrugated & flat rolling (CFR) titanium/steel composite plates under ballistic impact. A novel metric, the critical delamination velocity (

v_{cd}

), is introduced to assess the impact resistance of CFR titanium/steel composite plates. The research reveals that the position of impact on the corrugation interface curve significantly influences the failure modes. Detailed three-dimensional finite element simulations were performed to provide insights into the penetration process and energy absorption characteristics of the CFR titanium/steel composite plate, as well as the influence of the interfacial fracture toughness on impact performance. The numerical simulation reveals that the failure mode of flipped-cover possesses superior energy absorption efficiency compared to the shearing plug mode, primarily due to the enhanced plastic deformation. Furthermore, by varying the interfacial fracture toughness in the numerical model, it is demonstrated that increasing the fracture toughness can effectively reduce delamination and global plastic deformation. Additionally, the influence of interfacial geometry on mechanical response was systematically investigated by comparing the impact behavior of plates featuring corrugated and planar interfaces. The results indicate that the corrugated interface enhances the impact resistance of the composite plates by increasing the contact area and altering the failure modes.

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波纹扁轧（CFR）钛/钢复合板在弹道冲击下的动态力学响应

本研究系统地研究了波纹扁轧钛/钢复合材料板在弹道冲击下的动态力学行为。引入临界分层速度（vcd）作为评价CFR钛/钢复合材料抗冲击性能的新指标。研究表明，冲击位置对波纹界面曲线的破坏模式有显著影响。为了深入了解CFR钛/钢复合材料板的侵彻过程和能量吸收特性，以及界面断裂韧性对冲击性能的影响，进行了详细的三维有限元模拟。数值模拟结果表明，与剪塞破坏模式相比，翻盖破坏模式具有更好的能量吸收效率，这主要是由于塑性变形的增强。此外，通过改变数值模型中的界面断裂韧性，表明增加断裂韧性可以有效地减少分层和整体塑性变形。此外，通过比较波纹界面与平面界面板的冲击行为，系统地研究了界面几何形状对力学响应的影响。结果表明，波纹界面通过增加接触面积和改变破坏模式来提高复合材料板的抗冲击性能。

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.