低速冲击损伤后FML的剩余拉伸强度数值模拟研究

doi:10.19936/j.cnki.2096-8000.20231128.004

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (11): 28-36.DOI: 10.19936/j.cnki.2096-8000.20231128.004

低速冲击损伤后FML的剩余拉伸强度数值模拟研究

张邵峰¹, 魏金辉², 唐新春³, 许家婧¹, 刘心语¹, 姚潞^1*

1.南通大学交通与土木工程学院,南通 226019;
2.南京中船绿洲机器有限公司,镇江212006;
3.南通海事局,南通 226019

收稿日期:2023-06-16 出版日期:2023-11-28 发布日期:2023-12-14
通讯作者: 姚潞(1990—),男,博士,讲师,主要从事复合材料结构力学性能方面的研究,yaolu@ntu.edu.cn。
作者简介:张邵峰(1987—),男,在读博士,主要从事复合材料结构损伤失效方面的研究。
基金资助:
江苏省高校自然科学研究项目(21KJB570009);南通市社会民生科技计划面上研究项目(MS22022103)

Numerical simulation of residual tensile strength of FMLs with low-velocity impact damage

ZHANG Shaofeng¹, WEI Jinhui², TANG Xinchun³, XU Jiajing¹, LIU Xinyu¹, YAO Lu^1*

1. School of Transportation and Civil Engineering, Nantong University, Nantong 226019, China;
2. CSSC Nanjing Lu Zhou Machine Co., Ltd., Zhenjiang 212006, China;
3. Marine Bureau of Nantong, Nantong 226019, China

Received:2023-06-16 Online:2023-11-28 Published:2023-12-14

摘要/Abstract

摘要： 纤维金属层合板(FML)结合了复合材料与金属材料各自的优异性能,逐渐被用于汽车、飞机等交通工具的轻量化结构。然而,低速冲击后结构会存在损伤,尤其是复合材料内部复杂损伤,严重影响FML的剩余拉伸强度。因此深入探索冲击损伤后FML的剩余拉伸强度具有非常重大的工程意义。本文首先建立FML的低速冲击以及准静态拉伸有限元数值模型,并通过低速冲击/拉伸试验,对FML冲击与拉伸数值模型的准确性与可靠性进行了验证。随后借助有限元重启动技术,建立了FML的冲击-分离-拉伸一体化数值模型,对不同冲击工况下FML的剩余拉伸强度进行了数值模拟研究,进一步总结了FML冲击损伤后的剩余拉伸强度规律。最后基于冲击后的当量化模型研究了FML的剩余拉伸强度,并与一体化数值模型结果进行对比,验证了当量化分析方法的准确性,可以节约计算成本并提高研究效率。

关键词: 纤维金属层合板, 数值模拟, 低速冲击, 一体化数值模型, 当量化分析, 复合材料

Abstract: Fiber metal laminates (FMLs) combine the excellent properties of composite materials and metal materials, which is gradually used as a lightweight structure for automobiles and airplanes. However, some damage must appear inside FMLs after low-velocity impact, especially the complex damage modes in the composite material, which can cause inestimable loss for the residual tensile strength of FMLs. Therefore, it is of great engineering significance to explore the residual tensile strength of FMLs with various impact damage. In this paper, the numerical models of FMLs under low-velocity impact and quasi-static tensile are firstly established, and their accuracy and reliability are verified by the low-velocity impact/tensile tests. Then, in virtue of finite element restart technology, an integrated numerical model combined with impact, separation and tension of FMLs is established, and the residual tensile strength of FMLs under different impact loadings is numerically simulated, and the residual strength rules after impact loadings can be further summarized. Finally, the residual tensile strength of FMLs is studied based on the quantitative model after impact, and compared with the results between the integrated numerical model and the quantitative mode. The accuracy of the quantitative analysis method is verified, which can save the calculation cost and improve the research efficiency.

Key words: fiber-metal laminate, numerical simulation, low-velocity impact, integrated numerical model, quantitative analysis, composites

中图分类号:

TB332

张邵峰, 魏金辉, 唐新春, 许家婧, 刘心语, 姚潞. 低速冲击损伤后FML的剩余拉伸强度数值模拟研究[J]. 复合材料科学与工程, 2023, 0(11): 28-36.

ZHANG Shaofeng, WEI Jinhui, TANG Xinchun, XU Jiajing, LIU Xinyu, YAO Lu. Numerical simulation of residual tensile strength of FMLs with low-velocity impact damage[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(11): 28-36.

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低速冲击损伤后FML的剩余拉伸强度数值模拟研究

Numerical simulation of residual tensile strength of FMLs with low-velocity impact damage

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