Preform Design Optimization for Forging Process Based on the Topological Approach
Preform design plays an important role in forging design especially for parts with complex shapes.In this paper,an attempt was made to develop a topological approach in the preform design of bulk metal forming processes based on the Bi-direction evolutionary structural optimization (BESO) strategy.In this approach,a new element addition and removal criteria based on the equivalent strain have been proposed for evaluating and optimizing the material flow in the forging process.To obtain a smooth preform boundary,a closed B-spline curve based on the least square approximation algorithm is employed to approximate the uneven surface of updated preform.An inhouse developed C# program has been employed to integrate the FE simluation,shape optimsation and surface approximation process.A 2D blade forging perform design problem are evaluate using the developed method.The results suggest that the optimized preform has shown better performance in improving the material flow and deformation uniformity during the forging.The results also demonstrate the robustness and efficiency of the developed preform design optimization method.
Preform Design Optimization Topology Hot Forging FE
Yong Shao Bin Lu Hengan Ou Zhenshan Cui
National Die and Mold CAD Engineering Research Center,Shanghai Jiao Tong University,Shanghai,200030, National Die and Mold CAD Engineering Research Center,Shanghai Jiao Tong University,Shanghai,200030, Department of Mechanical,Materials and Manufacturing Engineering,University of Nottingham,Nottingham
国际会议
沈阳
英文
484-490
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）