Phd Thesis Finite Element Analysis

Phd Thesis Finite Element Analysis-29
The concentric and eccentric stiffeners, whether straight or curvilinear are ideally modelled so that they can be placed anywhere on the plate and not necessarily along the mesh grids as usually presented in the conventional methods.

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The formulation is generalised using a mapping technique so that the analysis is performed in a square domain.

It uses a superparametric element in which the displacement field is defined by the shape functions of an ACM plate bending element along with in-plane displacements and geometry by cubic serendipity shape functions.

Some new results obtained by the proposed method are also presented.

This thesis reports an investigation into the relationships between the tyre strain feature and tyre operating conditions based on finite element analysis and experiments for the development of a strain-based intelligent tyre system, which could estimate the tyre operating characteristics for optimising vehicle dynamics control and improving vehicle safety.

The program allows for the yielding ofsteel and the cracking and crushing of concrete.

Phd Thesis Finite Element Analysis

The modified Newton-Raphson with load control and displacement control methods isused to trace the structural response up to collapse.Geometric and material nonlinearities are bothconsidered in the study.Two computer programs have been developed for the analysis of platesand slabs.To account for the nonlinearity, von Karman’s large deflection theory is used, and the formulation is performed in the total Lagrangian coordinate system.The nonlinear equations of large deformation are solved using Newton Raphson technique whereas the nonlinear equations of large amplitude free flexural vibration are solved by direct iteration method that uses the linear mode shape as a starting vector.Ihe first program is for the elastic stability ofplates.The elastic buckling loads obtained for plates with andwithout openings and under different edge loading conditions havebeen compared with the analytical and numerical results obtained byother investigators using different techniques of analyses.Goodcorrelation between the results obtained and those given by othershas been achieved.Improvements in the accuracy of the results andthe efficiency of the analysis for plates with openings have beenachieved.The adaptive meshing is a key development that enhances the efficiency and robustness of the method.We demonstrate the ability of the methodology to simulate diverse problems such as shear banding, impact, and wear.


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