Numerical simulation analysis of fatigue life of front girder of quay crane
In order to ensure the safe operation of the shore bridge crane,it is necessary to evaluate the fa-tigue life of the front beam of the shore bridge crane.Firstly,the front beam model is established in ANSYS for static analysis,and the actual working conditions are used for loading to obtain the stress state and de-formation of the crane's main components under the load combination,which is compared with industry specifications to verify its strength and stiffness.For the dangerous parts of the structure,ANSYS APDL is used to export the flexible body around it and coupled with the multi-body dynamics software ADAMS for dynamics simulation.Different connection methods were taken to add the motion sub and drive,and the load spectrum of the front beam of the shore bridge crane under the given working conditions was derived.The fatigue analysis of the front beam of the bridge crane was carried out by using the"fatigue five-box dia-gram"of Ncode design life combined with the linear damage theory and the S-N curve of the material.The results show that the connection between the front beam and the front tie rod is the shortest life part,and the minimum number of cycles obtained based on the modified model Godman is 7.145E+05 times.The re-sults of this paper can provide an important reference for predicting the fatigue life of the shore bridge crane.
quay bridge cranesdynamicsfatigue lifedamage theoryfinite element
NETL
NSTL
万方数据
