Finite Element Simulation for Springback Prediction Compensation
Finite Element Simulation for Springback Prediction Compensation
复制标题
回弹预测补偿的有限元模拟
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
B. Omar
中科院分区：
文献类型：
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作者：
A. Anggono;W. Siswanto;B. Omar
包括回弹预测在内的金属板材变形的精确建模是在工业应用中有效利用有限元法 (FEM) 过程模拟的关键因素之一。假设可以准确预测回弹，仍然存在如何使用此类结果出现在合适的模具设计中以生产目标零件形状的问题。当前工作中解决的正是回弹补偿的第二步。本文介绍了对定义为 Numisheet 2008 基准 II 的标准基准模型的评估，该模型是具有各种拉延筋和压边力 (BHF) 的 S 通道模型。根据零件的回弹计算修改工具几何形状以补偿回弹。结果表明，光滑胎圈与 650 kN BHF 的组合产生了最小的回弹，并且刀具补偿成功地适应了回弹误差。
An accurate modelling of the sheet metal deformations including the springback prediction is one of the key factors in the efficient utilisation of Finite Element Method (FEM) process simulation in industrial application. Assuming that springback can be predicted accurately, there still remains the problem of how to use such results to appear at a suitable die design to produce a target part shape. It is this second step of springback compensation that is addressed in the current work. This paper presents an evaluation of a standard benchmark model defined as Benchmark II of Numisheet 2008, S-channel model with various drawbeads and blank holder force (BHF). The tool geometry modified based on springback calculation for a part to compensate springback. The result shows that the combination of the smooth bead with BHF of 650 kN resulted in the minimum springback and the tool compensation was successfully to accommodate the springback errors.