Nonlinear dynamic buckling of stiffened plates under in-plane impact load

INTRODUCTION Dynamic buckling of structures under impactloading has become a research hotspot and hasreceived increasing attention in the last decade fromdesigners of modern engineering structures. Mostpast investigations focused on simple structuressuch as columns, plates and cylindrical shells; pa-pers dealing with stiffened plate structures withwide application in engineering are limited. Zizicas (1952) investigated the dynamic buckl-ing of thin elastic plates. A theoretical solution f…     

瞄准学科前沿培养高质量研究生

瞄准学科前沿培养高质量研究生郑际嘉刘土光固体力学是一门比较古老的学科，而结构力学又属应用力学的范畴，它的发展更依赖于数学和固体力学理论的发展，因此对于船舶和海洋工程结构力学专业，欲培养出高质量的研究生，不仅需要针对学科自身发展的特点，瞄准学科发展的前...     

Nonlinear dynamic buckling of stiffened plates under in-plane impact load

This paper presents a simple solution of the dynamic buckling of stiffened plates under in-plane impact loading. Based on large deflection theory, a discretely stiffened plate model has been used. The tangential stresses of stiffeners and in-plane displacement are neglected. Appling the Hamilton's principle, the motion equations of stiffened plates are obtained. The deflection of the plate is taken as Fourier series, and using Galerkin method the discrete equations can be deduced, which can be solved easily by Runge-Kutta method. The dynamic buckling loads of the stiffened plates are obtained form Budiansky-Roth criterion.