摘要
提出并实现了直接从测量到的空间散乱点直接生成有限元网络的新方法 ,使具有大尺寸复杂型面金属板料冲压成形整个数值模拟有限元建模的工作量大大降低 ,并使得建模的自动化程度提高 .为了解决建模过程中初始坯料形状未知的问题 ,比较了不同的初始毛坯预测方法 ,提出用一步模拟法从已得到模具的有限元网格进行反推 。
For the sheet metal with large size and complex geometry shape such as autopanel, it is always a difficult and time-consuming work to set up the FEM model of numerical simulation of stamping process. In the paper, the methods of modeling the FEM model of sheet with complex shape for stamping simulation were introduced. Based on the procedure of sheet metal forming numerical simulation, a new method directly creating FEM mesh from the scanned data was presented. The new method dramatically decreases the workload and enlarges the robustness of the modeling process. For dealing with the problem of the initial blank geometry is not clear, some predict methods were compared.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2001年第1期94-97,共4页
Journal of Shanghai Jiaotong University
基金
上海市科委技术发展基金资助项目
关键词
板料成形
复杂型面
数值模拟
有限元建模
初始毛坯形状
有限元网格
模具设计
冲压成形
Computer aided design
Computer simulation
Finite element method
Forecasting
Geometry
Mathematical models
Robustness (control systems)
Sheet metal
Stamping
