Numerical Simulation On The Failure Of Stiffened Plate And Shell Structure Under Impact Of Dynamic Loading Mechanism

Guaranteeing the structures'reliability and durability , Stiffened plate and shell structure dramatically saves structural materials and reduces the structural weight, which greatly increasing the efficiency and economical value, with the development of industry and technology , Stiffened panel and shell in has been widely used the maritime and other engineering fields. As the impact load is a widespread physical phenomenon in various engineering and our social life, such as rocket launchers, Ship Collision grounding, cars'collision, etc., the impact load challenge our lives with its affecting in a short time, intensity, which capable of causing serious damage to the structure. On other hand, it is inevitable for the structure of Stiffened panel and shell to have cracks or defects similar to cracks. Objects or structures with such defects are easy to go dynamic fracture under dynamic shock-load. Perfectly process materials or engineering structure of the dynamic fracture problems and prevent such incidents is a major unresolved and staff issue in front of us.The dynamic response of structural impact loads is often difficult to be solved with traditional theoretical calculation and analysis methods. With the rapid development of computer technology, the finite element simulation technology has widely used in aerospace, maritime, steel, automobiles, and other engineering analysis, it has developed into a reliable and accurate way of analysis. In an attempt to provide an referential support for latter researches, This paper, using of nonlinear finite element software ANSYS/LS-DANA, targets at the impact load of finite element simulation study, focuses on the stiffened panel and shell's dynamic response analysis under the impact load, as well as analyze failure mechanism under impact loading of stiffened panel and shell with existence of the cracks...