Study And Development Of Post-processing Software For Dynamic Stability Analysis Of Large-span Spatial Structure Based On ABAQUS

The large span spatial structure has the advantages of reasonable force,light weight,convenient construction and so on.It can adapt to a variety of architectural modeling,which greatly meets the needs of social and economic development.China is one of the countries suffered the most severe earthquake disaster.When earthquake occurs,buildings are highly vulnerable to damage or even collapse.As the large span spatial structure is mainly used in public buildings,its destruction will result in a huge social impact and property damage.The current research on structural seismic resistance is mainly focused on high-rise structures.There is still a lack of research on the seismic theory of large span spatial structure.Under the action of seismic,large span spatial structure may be failure by strength or dynamic instability.Static stability is only specified in the technical specification for space frame structures.As the ABAQUS software has abundant element model,material model and powerful nonlinear analysis function,calculation software for dynamic stability of large span spatial structure is often ABAQUS.However,post-processing function of ABAQUS software is cumbersome and difficult to handle large amounts of data.In this thesis,the dynamic stability of large span spatial structure and secondary development of ABAQUS were studied.The main work is as follows:(1)Aiming at the shortcomings of the post-processing function of ABAQUS software,the post-processing software of dynamic stability analysis was developed with secondary development function of ABAQUS.With the post-processing software reading the ABAQUS software result files,a custom database file was generated.The custom database file contains structure load,structure period,the assigned node’s displacement,the maximum node’s displacement of structure,the proportion of yield bar,etc.According to the multiple custom database files,the post-processing software can automatically generate the dynamic stability analysis report.(2)A typical cylindrical reticulated shell was analyzed on dynamic stability with Taft wave by ABAQUS software.The cylindrical reticulated shell’s critical load of dynamic instability was obtained with the post-processing software,which verified the convenience of the post-processing software.(3)The dynamic stability of Dahuashan outdoor sports center structure was analysized with ABAQUS software.The seismic wave were a group of artificial wave and two sets of natural waves.The motion characteristics of the structure and the failure mode of the structure were obtained with the post-processing software.