According to the theory of plates and shells, the nonlinear dynamics equation of quadrate thin plate with welding residual stress is established; the nonlinear motion equation of quadrate thin plate with welding residual stress is obtained using Galerkin method. On the basis of the nonlinear motion equation, welding residual stress influence on the scope of neighborhood of stable solution abut, centrality singular point of quadrate thin plate is discussed; welding residual stress influence on critical value...
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