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首页> 外文会议>China-Japan-Korea joint symposium on optimization of structural and mechanical systems >Integrated Layout Optimization Design of Multi-component Systems Based on the Stiffness Spreading Method
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Integrated Layout Optimization Design of Multi-component Systems Based on the Stiffness Spreading Method

机译：基于刚度扩展方法的多分量系统集成布局优化设计

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摘要

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.
机译：在该论文中，作者延伸刚度传播方法（SSM），这是以前提出了桁架结构的布局优化设计，制订分立元件和连续支撑structures.In所提出的模型的集成布局优化设计的新颖模型的，可移动的分立元件被包括在设计域。这些分立元件的刚度矩阵是由一组等效刚度矩阵的置换和​​嵌入到基于所述SSM的背景的结构，以及它们的位置可以与支撑结构拓扑同时进行优化。所述分立元件和所述支撑结构的伪密度的位置被指定为用于优化所需要的几何和拓扑设计变量respectively.All灵敏度可以通过分析methods.In容易地获得和计算的本文的固体模型各向同性微结构与罚性（SIMP）被施加以优化连续支撑结构和移动渐近线的方法（MMA）作为优化器。两种类型的分立元件，单独的杆和由杆子结构，被认为是，和在优化process.Several平均遵守最小化问题，不需要重新网格化进行了研究受到材料体积constrain.Numerical实施例说明所提出的可行性和效率方法。

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