Shape optimization of heavy load carrying components for structural performance and manufacturing cost

被引:20
作者
Edke, M. S. [1 ]
Chang, K. H. [1 ]
机构
[1] Univ Oklahoma, Sch Aerosp & Mech Engn, Norman, OK 73019 USA
关键词
shape optimization; cost modeling; virtual machining; finite element analysis; computer numerical control (CNC);
D O I
10.1007/s00158-005-0603-4
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
This paper addresses the trade-off between structural performance and manufacturing cost of heavy load carrying components by incorporating virtual machining (VM) technique in computer-aided design (CAD)-based shape optimization problem. A structural shape optimization problem is set up to minimize total cost, subject to the limits on structural performance measures. For every design iteration, finite element analysis (FEA) is conducted to evaluate structural performance, and VM is employed to ascertain machinability and estimate machining time. Design sensitivity coefficients of objective function and constraints are computed and supplied to the optimization algorithm. Based on the gradients, the algorithm determines design changes, which are used to update FEA and VM models. The process is repeated until specified convergence criterion is satisfied. Application programs developed to integrate commercially available CAD/CAM/FEA/Design optimization tools enable implementation in virtual environment and facilitate automation. The application programs can be reused for similar design problems provided that the same set of tools is used.
引用
收藏
页码:344 / 354
页数:11
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