Structural Stiffness Optimization Under Dynamic Loads

Abstract:

Most studies are focused on topology optimization techniques under external static loads. However, all forces are dynamic in real world. Mathematical optimization with dynamic loads is almost impossible in a large-scale problem. Thus, the bi-directional evolutionary structural optimization method (BESO) is extended to the topology optimization problem of structure under transient dynamic loading. Structural stiffness optimization is performed with the objective of reducing the mean compliance during the whole load-time history. By the dynamical analysis, the stiffness optimization model is established based on BESO method. In this method, the material volume is taken as the constraint condition, and the minimum mean compliance of structure is taken as the objective function. A cantilever under harmonic load has been taken as a numerical example to show the effectiveness of the proposed approach.

• Periodical: Applied Mechanics and Materials (Volumes 668-669)
• Pages: 264-267
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.668-669.264
• Online since: October 2014
• Authors: Xiao Yan Teng*, Jia Wei Tao, Jia Shan Han
• Keywords: BESO, Dynamic Load, Structural Stiffness Optimization, Topology Optimization

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