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以ANSYS/LS-DYNA软件为分析平台,构建了凸模支撑渐进成形过程的有限元模型,成功模拟了用平行直线型路径方案渐进成形直壁筒形件的过程,并通过实验验证了该数值模拟方法的可行性。对数值模拟结果进行后处理得到直壁筒形件的应力应变分布、节点运动以及壁厚的变化规律。结果表明,平行直线型路径方案能够成形出壁厚较为均匀的直壁筒形件,在筒形件口部区域等效应力和等效应变达到最大。
With ANSYS / LS-DYNA software as the analysis platform, the finite element model of the progressive forming process of the punch support was constructed and the process of asymptotic forming of the straight-walled cylindrical workpiece by the parallel straight path method was simulated successfully. Feasibility of simulation methods. The results of numerical simulation were processed to obtain the stress-strain distribution, the movement of joints and the variation of wall thickness of the straight-walled cylindrical part. The results show that the parallel linear path scheme can form a straight wall cylinder with a uniform wall thickness, and the equivalent stress and equivalent strain reach the maximum in the mouth area of the cylinder.