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| Study on effects of background integration mesh on topology optimization based on adaptive EFG method |
| Received:July 11, 2011 Revised:November 20, 2011 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20125009 |
| KeyWord:topology optimization EFG method adaptive background mesh error estimator |
| Author | Institution |
| 伍贤洪 |
湘潭大学 机械工程学院, 湘潭 |
| 龚曙光 |
湘潭大学 机械工程学院, 湘潭 |
| 曾兴国 |
湘潭大学 机械工程学院, 湘潭 |
| 钟勇文 |
湘潭大学 机械工程学院, 湘潭 |
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| Abstract: |
| The effect of background integration mesh on calculating accuracy in element-free Galerkin method is discussed by using stress-energy norm as the error indicators.A suitable division of the background mesh is recommended.The topological optimization model is built by selecting nodal density as design variables and flexibility as objective function.While the density value of node is used as the criteria of adding node within a region,the scheme of adaptive regular inserting node is created,and continuous structural topology optimization is investigated.It can effectively reduce the number of design variables that the program of inserting node is used in the process of topology optimization.The effects of background integration mesh on topology optimization results are discussed.The numerical results obtained show that a suitable background cell can not only further reduce the number of design variables,but also can improve the smoothness of the topology optimization results,and the computational efficiency and accuracy can be improved. |
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