Finite element analysis and application of bar and beam composite structures based on Feon-Abaqus
Due to the different degrees of freedom of nodes at the joints of different types of elements for the bar and beam composite structure,there exist such problems as low efficiency and large storage space in as-sembling the global stiffness matrix.The assembling method adopted by Feon still can be improved on the computing speed and the storage.Moreover,Feon can only handle linear cases currently.Abaqus can handle various nonlinear problems,but it lacks of parametric modeling solutions for the composite structural systems.Combining Feon with Abaqus can provide a more effective method for the linear and nonlinear finite element analysis of the bar and beam composite structure.In this paper,we first improve the assembling method of the global stiffness matrix in Feon.The resulting new method can obviously reduce the size of the transition matrix and the final matrix,and can improve the processing speed and the storage economical efficiency.Secondly,based on the improved Feon framework,a method for directly performing finite element analysis of bar and beam composite structures on the Python platform is provided,which ex-tends the processing category from linear to nonlinear.The corresponding Feon-Abaqus conversion codes are then provided for the parametric modeling solution for Abaqus in processing bar and beam composite struc-tures.Finally,some numerical examples have verified that the resulting improved method can not only im-prove the calculation speed,but also ensure the calculation accuracy.The effectiveness of Feon-Abaqus based linear and nonlinear analysis of bar and beam composite structures has also been verified.
composite structurefinite element analysisstiffness matriximplementation on Feon-Abaqusnumerical simulation