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Electro-mechanical analysis of composite and sandwich multilayered structures by shell elements with node-dependent kinematics

引用

International Journal of Smart and Nano Materials 2018年第1期9卷 1-33,I0001页

作者： E.Carrera S.Valvano G.M.Kulikov Department of Mechanical and Aerospace Engineering Politecnico di TorinoTurinItaly Laboratory of Intelligent Materials and structures Tambov State Technical UniversityTambovRussia

In this work,a new class of finite elements for the analysis of composite and sandwich shells embedding piezoelectric skins and patches is *** main idea of models coupling is developed by presenting the concept of nodal dependent kinematics where the same finite element can present at each node a different approximation of the main unknowns by setting a nodewise through-the-thickness approximation *** a global/local approach scenario,the computational costs can be reduced drastically by assuming refined theories only in those zones/nodes of the structural domain where the resulting strain and stress states,and their electro-mechanical coupling present a complex *** numerical investigations are carried out to validate the accuracy and efficiency of the present shell *** accurate representation of mechanical stresses and electric displacements in localized zones is possible with reduction of the computational costs if an accurate distribution of the higherorder kinematic capabilities is *** the contrary,the accuracy of the solution in terms of mechanical displacements and electric potential values depends on the global approximation over the whole *** efficacy of the present node-dependent variable kinematic models,thus,depends on the characteristics of the problem under consideration as well as on the required analysis type.

关键词： Shell piezo composite structures global/local analysis Unified formulation nodedependent kinematics

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