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۱Exact Mixed–Kirchhoff Solutions for the Bending Analysis of Reissner Plates
نویسنده(ها):
اطلاعات انتشار: نهمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۱۰
The plate theory has been and is still a subject which has been very extensively studied for a century. In the theory of plates usually two different limit cases are considered: the Kirchhoff and the shear deformable plate. Of the many shear deformable plate theories proposed over the years, the Reissner plate theory is fundamentally simpler to adopt for modeling the shear deformation behavior of thick plates. This paper presents exact axisymmetric bending solutions of thick plates based on the Reissner plate theory. The solutions are displayed in terms of the corresponding Kirchhoff (or classical thin) plate solutions. These Kirchhoff–Reissner bending relationships are derived using the mathematical similarity of the governing equations of the two plate theories and the basis of load equivalence. The relationships allow one to readily deduce the more accurate Reissner plate solutions that account for the effect of transverse shear deformation, without having to solve the more complicated Reissner plate equations.<\div>

۲Application of the Boundary–Type Scheme in Analysis of Thick Plate Bending Problems
نویسنده(ها):
اطلاعات انتشار: نهمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۱۱
There are many practical engineering problems which may be considered as boundary value problems (BVP). A typical BVP is governed by one or more ‘differential’ or ‘integral’ equation(s) within a specified domain, together with some conditions over the boundary of the domain. There are some situations where an analytical or a closed–form solution could be found for a given BVP, otherwise there might be no other choice but to employ an approximate procedure for the solution of the given BVP. The objective of this paper is to analysis thick plate including shear deformation through Trefftz boundary method. To achieve for this purpose, the Galerkin formulation is selected based on Hochard and Proslier presentation in 1992. In this paper, the indirect Trefftz method is discussed and the results show that the present methods are effective for both thin and thick plates. This article is organized as follows. In section 2, the basic equations based on the Reissner’s plate theory are explained in detail. Then, in section 3, the complete solutions and complete sets are presented. In section 4, the Galerkin Method is introduced into the indirect Trefftz method and in section 5, some numerical examples are shown to illustrate the efficiency of the Trefftz method. Finally, in section 6, the conclusions are drawn, briefly<\div>
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