【摘要】 提出了一种有效的高强钢成形回弹因素分析方法。该方法将有限元分析方法和灰色关联度分析方法进行结合,以国际著名板料成形数值模拟会议NUMISHEET 2002的圆形件无约束自由弯曲为研究对象,建立了高强钢圆形弯曲件的有限元仿真模型,利用实验数据验证了该回弹模型的有效性。根据实验设计分析板料厚度、板料宽度、冲压速度等7个可能影响回弹的因素组合,通过有限元仿真,得到了仿真实验设计结果。运用灰色关联度法,分析了各参数对高强钢成形回弹的影响程度,获得了影响高强钢圆形件弯曲回弹的主要因素。更多还原

【Abstract】 This paper puts forward an effective high strength steel stamping springback factors analysis method.The methods of finite element analysis and grey correlative degree analysis are combined.The research object is the circular pieces of free bending from the internationally famous sheet metal forming numerical simulation conference NUMISHEET 2002.Firstly,the finite element model of high strength steel circular bending is established.It’s effectiveness is verified by experimental data.Then,by means of orthogonal design,seven factors including thickness,width,stamping speed and so on are analyzed,and the results are obtained from the finite element simulation experiment.Finally,these factors on the high strength steel stamping springback impact are analyzed by gray correlation analysis.The main factors are obtained,which can provide some guidance for the production role.更多还原