车用纤维金属层板构件冲压变形行为研究

doi:10.19562/j.chinasae.qcgc.2023.03.019

Abstract

Abstract:

Fiber Metal Laminate （FML） is a new type of lightweight hybrid material， which is gradually used in the field of transportation equipment such as automobiles. However， its forming process is affected by various parameters， and the distribution law of stress and strain in the forming process is still unclear. In this paper， T300 carbon fiber aluminum alloy composite laminate is selected as the research object. Its stamping forming process is simulated by ABAQUS finite element software， and the accuracy is verified. The stress distribution and wall thickness change law of FML under the influence of factors such as the type of prepreg， the thickness of the laminate and the number of laminates are studied. The results show that the calculation of the established FML stamping model is accurate. The type of prepreg mainly affects the stress distribution and wall thickness change of the fiber layer. The thickness of the laminate and the number of laminate have impact on the wall thickness change of each layer. By reducing the thickness of the laminate or increasing the number of layers can alleviate the problem of excessive thinning. The thickness and number of layers also affect the stress distribution of the aluminum alloy layer. With the increase of the thickness and number of layers， the stress distribution of the aluminum alloy layer tends to be uniform.

Key words: fiber metal laminate, automobile lightweight, stamping, numerical simulation, stress and wall thickness distribution

Yizhe Chen,Hongde Fan,Yichun Wang,Hui Wang,Jun Li,Lin Hua. Research on Stamping Deformation of Automotive Fiber Metal Laminates[J].Automotive Engineering, 2023, 45(3): 517-526.

Figures/Tables 19

References 14

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样本编号	预浸料种类	层板厚度/mm	层板数
1	T300/YH69	0.32	2/1
2	T300/YH69	0.32	3/2
3	T300/YH69	0.40	2/1
4	T300/YH69	0.48	2/1
5	T300/YH69	0.56	2/1
6	T300/7901	0.32	2/1
7	T300/914	0.32	2/1
8	T300/E901	0.32	2/1

项目	实验总减薄率	仿真总减薄率	相对误差
铺层方式1	6.9	8	15.9
铺层方式2	8.1	12.5	54.3
铺层方式3	12.5	11.3	9.6

铝合金层	最大应力值	平均应力值
3/2上层	367.592	181.780
3/2中层	367.286	172.228
3/2下层	367.715	195.030
2/1上层	367.554	199.410
2/1下层	367.741	261.688

铝合金层	原始厚度/mm	最薄厚度/mm	最大减薄率/%	平均减薄率/%
3/2上层	0.320	0.282	11.9	3.1
3/2中层	0.320	0.294	8.1	1.25
3/2下层	0.320	0.260	18.8	3.4
2/1上层	0.320	0.215	32.8	10.0
2/1下层	0.320	0.278	13.1	5.9

纤维层	原始厚度/mm	最薄厚度/mm	最大减薄率/%	平均减薄率/%
3/2上层	0.320	0.311	2.8	0.6
3/2下层	0.320	0.315	1.6	0
2/1中层	0.320	0.305	4.7	2.8

Research on Stamping Deformation of Automotive Fiber Metal Laminates

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