Buckling Analysis of Variable Stiffness Composite Cylindrical Shells Based on Hermite Curves

Abstract:

Based on the Hermite curve, the buckling behavior of a variable stiffness composite cylindrical shell is investigated. Firstly, the cylindrical shell is unfolded into a plane, and the Hermite curve is taken as the basic reference path on the plane and the variation of the fiber orientation is obtained. Then, the finite element analysis pre-processing program of the variable stiffness composite cylindrical shell is written by Python to develop ABAQUS interactive interface. Finally, the GUI plug-in is developed successfully, the buckling analysis of the constant stiffness and variable stiffness cylindrical shells is carried out and the effect of buckling load on the initial tangential direction q₁, the initial point tangential magnitude L₁, the end point tangential direction q₂, the end point tangential magnitude L₂ is preliminarily explored. It is found that the buckling load of the variable stiffness cylindrical shell is improved greatly. The secondary development of ABAQUS by Python is used to realize the automatic modeling and calculation analysis of the variable stiffness cylindrical shell parts, which provides research ideas and processes for practical engineering research, and has certain practical significance.

• Periodical: Key Engineering Materials (Volume 805)
• Pages: 191-197
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.805.191
• Online since: June 2019
• Authors: Chun Bo Nian*, Xiao Ping Wang, Jing Yu Pei
• Keywords: Buckling Analysis, Hermite Curve, Secondary Development of ABAQUS, Variable Stiffness Composite Cylindrical Shells

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