Springback prediction and mould design for multi-square punch forming of the strip based on FCN

Table 1. Material properties of strip
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Table 1. Material properties of strip
属性名称数值
杨氏模量E /MPa 2.07×10⁵
屈服强度σ_y /MPa 297
泊松比μ 0.3
密度ρ / (kg·m⁻³) 7.85×10⁵

Table 2. Comparison of experimental and predicted profile

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Table 2. Comparison of experimental and predicted profile

工况组	位置x/mm	实验y/mm	FCN预测y/mm	误差/%
R1250T100	120	2.79	2.88	3.10
	180	6.34	6.50	2.46
	240	11.30	11.82	4.40
	300	17.69	18.56	4.69
R1000T080	120	3.62	3.39	6.78
	180	7.01	7.66	8.49
	240	13.09	13.81	5.21
	300	21.12	21.45	1.53
R1000T100	120	3.60	3.85	6.50
	180	9.06	9.52	4.83
	240	16.86	17.27	2.37
	300	27.03	27.09	0.02

Table 3. Comparison of calculation time between FCN model and finite element model
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Table 3. Comparison of calculation time between FCN model and finite element model
工况组 FCN模型计算时间/s 有限元模型计算时间/s
R1250T100 0.5 9 420
R1000T080 0.5 9 600
R1000T100 0.5 9 900

Table 4. Comparison of calculation efficiency between FCN model and finite element model

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Table 4. Comparison of calculation efficiency between FCN model and finite element model

工况组	FCN模型			有限元模型
工况组	模型计算时间/s	模具曲率半径/mm	相对误差/%	模型计算次数	模型计算时间/s	模具曲率半径/mm	相对误差/%
R1250T100	0.5	1 258	0.64	1	9 420	1 600	28.0
				2	9 540	1 350	8.0
				3	9 240	1 100	11.2
				4	9 360	1 280	2.4
R1000T080	0.5	1 010	1.00	1	9 300	1 200	20.0
				2	9 420	850	15.0
				3	9 540	1 080	8.0
				4	9 600	980	2.0
R1000T100	0.5	1 008	0.80	1	10 020	1 220	22.0
				2	9 720	900	10.0
				3	9 720	1 100	10.0
				4	9 780	1 050	5.0
				5	9 720	1 018	1.8

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Ling ZHU, Jinhui DONG, Qiyu LIANG. Springback prediction and mould design for multi-square punch forming of the strip based on FCN[J]. Chinese Journal of Ship Research, 2023, 18(6): 197

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Paper Information

Category: Ship Structure and Fittings

Received: Jun. 17, 2022

Accepted: --

Published Online: Mar. 21, 2025

The Author Email:

DOI:10.19693/j.issn.1673-3185.02964

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Material properties of strip

Table 1. Material properties of strip

Table 2. Comparison of experimental and predicted profile

Table 2. Comparison of experimental and predicted profile

Table 3. Comparison of calculation time between FCN model and finite element model

Table 3. Comparison of calculation time between FCN model and finite element model

Table 4. Comparison of calculation efficiency between FCN model and finite element model

Table 4. Comparison of calculation efficiency between FCN model and finite element model