Integrated Layout Optimization Design of Multi-component Systems Based on the Stiffness Spreading Method
In this paper, the authors extend the stiffness spreading method (SSM), which was proposed previously for layout optimization design of truss structures, to formulate a novel model for the integrated layout optimization design of discrete components and continuous supporting structures.In the proposed model, movable discrete components are included in the design domain.The stiffness matrices of these discrete components are replaced by a set of equivalent stiffness matrices and embedded into the background structure based on the SSM, and their locations can be optimized together with the supporting structural topology simultaneously.The locations of the discrete components and the pseudo-densities of the supporting structure are assigned as the geometrical and topological design variables respectively.All sensitivities required for the optimization can be easily obtained and calculated by analytical methods.In this paper, the model of Solid Isotropic Microstructure with Penalization (SIMP) is applied to optimize the continuous supporting structures and the Method of Moving Asymptotes (MMA) is used as the optimizer.Two types of discrete components, separate bars and substructures consisting of bars, are considered, and no remeshing is required during the optimization process.Several mean compliance minimization problems are studied subject to material volume constrain.Numerical examples illustrate the feasibility and efficiency of the proposed method.
Structural optimization topological optimization integrated layout design radial basis functions
Peng Wei Junkui Shi Haitao Ma
State Key Laboratory of Subtropical Building Science,School of Civil Engineering and Transportation,South China University of Technology,510641,Guangzhou,China
国际会议
黄山
英文
1-10
2012-06-18（万方平台首次上网日期，不代表论文的发表时间）