Dynamic stress intensity factors are evaluated forthick-walled cylinder with a radial edge crack under internalimpulsive pressure. Firstly, the equation for stress intensityfactors under static uniform pressure is used as the referencecase, and then the weight function for a thick-walled cylindercontaining a radial edge crack can be worked out. Secondly,the dynamic stresses in uncracked thick-walled cylindersare solved under internal impulsive pressure by using modeshape function method. The solution consists of a quasi-staticsolution satisfying inhomogeneous boundary conditions anda dynamic solution satisfying homogeneous boundary conditions,and the history and distribution of dynamic stresses inthick-walled cylinders are derived in terms of Fourier-Besselseries. Finally, the dynamic stress intensity factor equationsfor thick-walled cylinder containing a radial edge crack subjectedto internal impulsive pressure are given by dynamicweight function method. The finite element method is utilizedto verify the results of numerical examples, showingthe validity and feasibility of the proposed method.
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