Analysis For The Linera Bending And Forced Vibration Of Rectangular Stiffened Plate By The Experimental Study And Meshless Method

Stiffened plate is a composite structure which consists of flat and stiffener. It is used in some major fields such as construction, aviation and hull for their high rigidity-weight ratio which is its advantage compared with the plate. So stiffened plate is studied by many scholars about its various mechanical behavior.In this paper, experiment and meshless method are used to analysis the linear bending and forced vibration of stiffened plate. Firstly, it reviews the research status of the meshless method and the research progress of stiffened plate about theory and experiment. It introduces the approximation scheme of element-free Galerkin method, including in the selection of weight function, integral scheme of background grid and processing of displacement boundary conditions. Secondly, it educes the control equation of linear bending for stiffened plate by first order shear deformation theory(FSDT) and moving least squares method(MLS), the three point bending experiment is also used for the stiffened plate. Finally, it educes the control quation of free vibration for stiffened plate by the meshless method, and analysises its forced vibration by Newmark-β method. The experimental schemes are designed and used for the free vibration and forced vibration of stiffened plate.In this paper, the C++ program is compiled to calculate for the meshless numerical simulation. Its result is used for analysising and comparing with experimental result and the ANSYS finite element solution. The researches show that owing to the stiffener, stiffened plate has a good ability to resist deformation. Meanwhile, it validates the correctness of meshless method.