Evolutionary Structural Optimization Method Based on Selection Logic
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摘要: 拓扑优化可以大大改善结构的性能或减轻结构的重量。按照渐进结构优化(Evolutionary Structural Optimization,ESO)思想,以应力为约束,提出了基于选择逻辑去除单元的ESO模型。基于ANSYS软件工作平台,阐述了优化软件实现的过程,用APDL命令编制了结构优化程序。用二维结构经典算例验证了方法的可行性,用三维结构优化算例验证了方法的通用性。Abstract: The topology optimization design may be helpful in improving performance of the structure and reducing its weight.Therefore,the engineering application of topology optimization is very important study object.In this paper,according to the evolutionary structural optimization(Abbr.ESO) idea,the ESO model based on the selection logical method is developed to delete elements under the stress constraints.And the optimization software programming processor is introduced and the APDL software for structural optimization principle is programmed on the ANSYS platform.A classical example of 2D structure verifies feasibility of this topology optimization method,and another example of 3D structure verifies its universal.Practical application shows the method in this paper provides a new way in application of ANSYS software platform to evolutionary structural optimization.
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Key words:
- structural optimization /
- topology optimization /
- selected logical methods /
- models
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