Abstract
The explicit topology optimization method based on moving morphable component (MMC) has attracted more and more attention, and components are the basic building blocks of the implementation of MMC method. In the present work, a MMC topology optimization method based on component with void structure is followed with interest. On the basis of analyzing the characteristics of components used by MMC method, the topology description function for component with void structure is presented, where a quantitative scaling factor is introduced without increasing the number of design variables. Taking the minimum flexibility as the optimization objective, an example of short beam is analyzed with different void structure scaling factors. The results show that different scaling factors have a greater impact on the final topology optimization structure, and an ideal topology structure can be obtained with an appropriate scaling factor. Finally, some problems in the optimization process are analyzed and indicate that appropriate mesh density should be chose for component with void structure in order to achieve good optimization results.
Funder
Major Science and Technology Project of Henan Province
National Natural Science Foundation of China
Publisher
Public Library of Science (PLoS)
Reference30 articles.
1. Generating optimal topologies in structural design using a homogenization method;M.P. Bendsøe;Computer Methods in Applied Mechanics and Engineering,1988
2. Optimal shape design as a material distribution problem.;M.P. Bendsøe;Structural & Multidisciplinary Optimization,1989
3. A simple evolutionary procedure for structural optimization.;Y.M. Xie;Computers & Structures,1993
4. Evolutionary topology optimization of continuum structures with an additional displacement constraint.;X. Huang;Structural and Multidisciplinary Optimization,2010
5. Structural optimization using sensitivity analysis and a level-set method;A. Grégoire;Journal of Computational Physics,2004