Buckling analysis of stiffened composite panels with variable stiffness

2nd International Workshop on Materials Science and Mechanical Engineering

机械制造;材料科学

Wu, W.^1 ; Bai, R.X.^1 ; Lei, Z.K.^1 ; Geng, C.H.^1 ; Zhang, X.Z.^1 ; Peng, K.W.^1 ; Guo, J.J.^1 ; Ma, Y.^1

State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian

116024, China^1

关键词: Buckling behaviors;    Composites laminates;    Curvilinear fibers;    Deformation theory;    Fiber reinforced composites;    Load-bearing capacity;    Stiffened composite panel;    Uni-axial compression;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/504/1/012059/pdf
DOI  :  10.1088/1757-899X/504/1/012059

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Based on the deformation theory of Kirchhoff composites laminated shell and the variable-stiffness theory, the post-buckling method of composites laminates with variable stiffness is given. From the idea that the fiber orientation varies linearly from one element to another along one of the coordinates, a finite element model of fiber reinforced composites laminates with variable angle is developed. Considering the progressive damage, the buckling behavior including deformation and load bearing capacity of I-shaped stiffened curvilinear fiber under the uniaxial compression is investigated. The pres ent method in this paper can be used as a reference for the design of variable angle laminated plates with automatic wire laying technology, as well as to improve the overall mechanical properties of the structure and reduce the weight of the structure.