22MnB5高强板冲压成形热力耦合数值模拟
发布时间：2018-11-05 08:25
【摘要】：采用ABAQUS软件建立基于热力耦合的有限元模型,对22MnB5高强板不同工艺条件下的成形过程进行模拟分析,探究摩擦系数、模具间隙和成形温度等工艺参数对热成形时的减薄率和应力分布的影响.结果表明:成形温度的升高会改善材料的塑性,导致变形抗力减小,危险点应力减小,减薄率增大.随模具间隙增加,危险点应力、减薄率都呈减小趋势.摩擦系数的增大导致材料流动阻力增大,减薄率增加,材料容易被拉裂.研究表明,摩擦系数0.1、模具间隙2.2mm、成形温度800℃为合适的工艺参数.
[Abstract]:The finite element model based on thermo-mechanical coupling was established by using ABAQUS software. The forming process of 22MnB5 high strength sheet under different technological conditions was simulated and analyzed, and the friction coefficient was explored. The influence of die clearance and forming temperature on the thinning rate and stress distribution during hot forming. The results show that the increasing of forming temperature can improve the plasticity of the material, decrease the deformation resistance, decrease the stress at the dangerous point and increase the thinning rate. With the increase of die clearance, the dangerous point stress and thinning rate decrease. The friction coefficient increases the material flow resistance increases, the thinning rate increases, and the material is easily cracked. The results show that the appropriate process parameters are: friction coefficient 0.1, die clearance 2.2 mm, forming temperature 800 鈩，
本文编号：2311500
[Abstract]:The finite element model based on thermo-mechanical coupling was established by using ABAQUS software. The forming process of 22MnB5 high strength sheet under different technological conditions was simulated and analyzed, and the friction coefficient was explored. The influence of die clearance and forming temperature on the thinning rate and stress distribution during hot forming. The results show that the increasing of forming temperature can improve the plasticity of the material, decrease the deformation resistance, decrease the stress at the dangerous point and increase the thinning rate. With the increase of die clearance, the dangerous point stress and thinning rate decrease. The friction coefficient increases the material flow resistance increases, the thinning rate increases, and the material is easily cracked. The results show that the appropriate process parameters are: friction coefficient 0.1, die clearance 2.2 mm, forming temperature 800 鈩，
本文编号：2311500
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