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| New development of the computational model for the analysis of laminated plate structures |
| Received:September 05, 2018 Revised:December 20, 2018 |
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| DOI：10.7511/jslx20180905002 |
| KeyWord:laminated composite plate scaled boundary finite element method (SBFEM) orthotropic transverse shear deformation |
| Author | Institution |
| 林皋 |
大连理工大学 海岸与近海工程国家重点实验室, 大连 |
| 张鹏冲 |
北京建筑大学 土木与交通工程学院, 北京 |
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| Abstract: |
| Modern laminated composite plates have distinguished advantages,such that they play a significant role in many fields of military and civil engineering applications.This kind of plates is characterized by quite different mechanical-physical properties in the thickness direction with the change of fiber orientation.The slopes of transverse displacements exhibit strong discontinuous change at the layer interfaces,which is well known as the zig-zag phenomenon.As a result,the transverse shear strain plays an important role in the plate response.Thus,the classical laminate plate theory is inadequate for the analysis of multilayer composites,while the theories which account for shear deformation effects attract researchers to be pay attention to and are developed.It is worth to note,over the past decades,although numerous models considering shear deformation effects have been developed for the solution of laminate plates and great achievements have been made,there are still some deficiencies in the versatility and accuracy of these models.They have difficulties to meet the requirements of myriad changes of mechanical-physical properties of modern laminate composite plates,the predicted displacement and stress fields along the thickness direction can hardly pass the stringent test.In this paper,an approach based on the scaled boundary finite element method (SBFEM) for the numerical analysis of orthotropic laminated composite plates is developed,which is equally applicable to the analysis of thin and thick plates.Numerical examples of orthotropic laminated composite plates show that highly accurate results can be achieved,the predicted displacement and stress fields agree very well with those obtained by the exact solutions of 3D theory of elasticity.Furthermore,the numerical examples demonstrate that the phenomena of the zig-zag distribution of the displacement and stress fields through the plate thickness can be accurately simulated.Accordingly,the versatility and perfect accuracy of the proposed approach are fully validated. |
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