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| A study on equivalent elastic constants of the sandwich plate with hierarchical corrugated core |
| Received:December 27, 2012 Revised:March 14, 2013 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201305015 |
| KeyWord:hierarchical structure orthotropic equivalent elastic constant error distribution |
| Author | Institution |
| 方耀楚 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
| 李刚 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
| 郝鹏 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
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| Abstract: |
| In this paper,the equivalent orthotropic elastic constants of the sandwich plate with a second order hierarchical corrugated core were studied.First,the strut of a sandwich plate with a triangle core was equivalent to an orthotropic solid.Then,the second order hierarchical corrugated structure is viewed as a sandwich plate with a triangle truss-core,which is made of an orthotropic solid and is also equivalent to an orthotropic plate.The equivalent orthotropic elastic constants of structure with the second order hierarchical corrugated core were obtained by the equivalent deformation.Finally,the error distribution of the equivalent formula was discussed with respect to the geometrical parameter.Comparison with the results by FEM showed that the proposed equivalent formula has satisfying accuracy. |