Dynamic Response And Dynamic Buckling Analysis Of Container Ship Under Slamming Load

Container ships have the characteristics of high speed and large drift,and they are often subjected to slamming loads during navigation,which greatly reduces the strength of the hull structure.Slamming loads exist in the form of dynamic loads.Previous people have done many studies on the response of the entire ship under static loads,but the research on its response under dynamic loads is still insufficient.This article first introduces the basic theories of structural dynamic response and dynamic buckling,and then rationally simplified the slamming load.Using the finite element software ANSYS,the dynamic response calculation commands when the plate is subjected to an out-of-plane load and when it is subjected to an in-plane load are compiled.The dynamic buckling calculation command of the,and the correctness of the dynamic response and the finite element results of the dynamic buckling are verified.In the study of the plate,the influence of each load parameter and the flexibility of the plate on its dynamic response is analyzed,and the influence of each parameter on the dynamic buckling of the plate with initial defects is considered;in the study of the stiffened plate,In addition to the load parameters analyzed in the plate model,the influence of the stiffener parameters on the dynamic response and dynamic buckling of the stiffened plate is also analyzed.In addition,the quantitative relationship of the main influencing parameters and the calculation formula of the critical load of dynamic buckling of the plate and stiffened plate are obtained.A three-dimensional modeling software SolidWorks was used to establish a container ship model.Taking the container ship as an example,a dynamic load was applied to the bow part of the ship according to the actual slamming load distribution law and size,and the entire ship’s double bottom was taken out.Part of the slab and stiffened slab,extract the load cycle and load form,compare with the dynamic load applied by the bow part,and summarize the relationship between the two.In addition,extract the in-plane stress of the part of the plate and the stiffened plate,and use the obtained dynamic buckling formula to obtain their dynamic buckling critical load,compare the in-plane stress with the critical value,and judge whether dynamic buckling has occurred,and then Check the dynamic buckling of the container ship.