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| Static and free vibration analysis of stiffened plates by ES-FEM using triangular element |
| Received:October 28, 2016 Revised:December 15, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20161028002 |
| KeyWord:stiffened plates static analysis free vibration analysis edge-based smoothed finite element method(ES-FEM) discrete shear gap technique(DSG) |
| Author | Institution |
| 游翔宇 |
华中科技大学 船舶与海洋工程学院, 武汉 ;船舶与海洋水动力湖北省重点实验室, 武汉 ;高新船舶与深海开发协同创新中心, 上海 |
| 郑文成 |
中国舰船研究设计中心, 武汉 |
| 李威 |
华中科技大学 船舶与海洋工程学院, 武汉 ;船舶与海洋水动力湖北省重点实验室, 武汉 ;高新船舶与深海开发协同创新中心, 上海 |
| 柴应彬 |
华中科技大学 船舶与海洋工程学院, 武汉 ;船舶与海洋水动力湖北省重点实验室, 武汉 ;高新船舶与深海开发协同创新中心, 上海 |
| 程聪 |
武汉船舶设计研究院有限公司, 武汉 |
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| Abstract: |
| In this paper,the edge-based smoothed finite element method (ES-FEM) is presented for static and free vibration analysis of stiffened plates.In the ES-FEM model,the edge-based strain smoothing technique (E-SST) is employed to smoothen the original strain field.Due to the softening effect provided by the E-SST,the original overly-stiff FEM model can be properly softened and the stiffness of the obtained ES-FEM model is closer to the exact system stiffness than that of the FEM.Owing to the good adapt ability of the triangular element,a triangular mesh is used to discretize the problem domain.In order to avoid the transverse shear locking caused by the low-order Reissner-Mindlin plate element,the discrete shear gap technique for triangular element (DSG3) is employed here.From several numerical examples,it is demonstrated that the proposed ES-FEM possesses faster convergence property and higher computational efficiency,and can also provide more accurate solutions than the FEM for stiffened plates. |
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