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In this paper a new approach to the consistent identification of the deformation pattern vital for the precise determination of the plastic limit load of a cylindrical shell from MNA when using modified Southwell (MS) and Tangent Stiffness (TS) plots is presented. It is proposed that the formalised assessment of the plastic collapse load can be done by the application of the relation between the load...
W pracy przedstawiono analizę dynamicznej utraty stateczności powłoki, wywołanej działaniem zmiennego w czasie obciążenia o charakterze impulsowym. Przyjęto impuls o kształcie pófali sinusoidy. Zamknięta powłoka walcowa poddana została jednoczesnemu osiowemu ściskaniu i ciśnieniu zewnętrznemu. Powłoka zorientowana jest w walcowym układzie współrzędnych oraz podparta swobodnie na krawędziach zewnętrznych...
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