镀锡钢薄壁罐胀形壁厚变化分析

为了提高薄壁罐气压胀形的成形质量,减少壁厚严重减薄而产生皱折、破裂等成形缺陷,使用钣金成形专用软件模拟薄壁罐气压胀形过程。分析了成形3个阶段金属流动情况、壁厚变化、应力和应变分布规律以及罐坯成形极限,中间阶段对胀形结果影响明显,壁厚减薄、应力和应变的最大值发生在胀形的最大变形区。试验验证与模拟分析吻合。

Analysis of wall thickness changing in thin-wall pot bulging process of tinned steel

To enhance the pneumatic bulging forming quality of thin-wall pot and reduce the bulging defects such as wrinkling and bursting caused by the over-reduced wall thickness,the bulging process of thin-wall pot part was simulated with professional software.The metal flow,wall thickness changes,stress and strain distributions,and bulging limit were analyzed.The maximum stress,strain and wall thinning of bulging all occurred in the largest deformation zone.The experiment and simulation results were in good agreem...