Discrete material optimization of general composite shell structures

2005 ◽  
Vol 62 (14) ◽  
pp. 2009-2027 ◽  
Author(s):  
J. Stegmann ◽  
E. Lund
Keyword(s):  
Composite Shell ◽  
Shell Structures ◽  
Material Optimization ◽  
Discrete Material Optimization

Transient Response Analysis of Geometrically Nonlinear Laminated Composite Shell Structures

1996 ◽  
Author(s):  
Cho W. S. To ◽  
Bin Wang
Keyword(s):  
Finite Element ◽  
Degrees Of Freedom ◽  
Composite Shell ◽  
Laminated Composite ◽  
Shell Structures ◽  
Response Analysis ◽  
Hybrid Strain ◽  
Drilling Degree Of Freedom ◽  
Shell Finite Element ◽  
Shear Deformable

Abstract The investigation reported in this paper is concerned with the prediction of geometrically large nonlinear responses of laminated composite shell structures under transient excitations by employing the hybrid strain based flat triangular laminated composite shell finite element presented here. Large deformation of finite strain and finite rotation are considered. The finite element has eighteen degrees-of-freedom which encompass the important drilling degree-of-freedom at every node. It is hinged on the first order shear deformable lamination theory. Various laminated composite shell structures have been studied and for brevity only two are presented here. It is concluded that the element proposed is very accurate and efficient. Shear locking has not appeared in the results obtained thus far. There is no zero energy mode detected in the problems studied. For nonlinear dynamic response computations, the full structural system has to be considered if accurate results are required.

Diverse discrete material optimization for multi-patch laminates under vibration environment

2020 ◽  
Vol 62 (4) ◽  
pp. 1905-1925
Author(s):  
Xiangtao Ma ◽  
Kuo Tian ◽  
Hongqing Li ◽  
Fayao Wang ◽  
Peng Hao
Keyword(s):  
Material Optimization ◽  
Discrete Material Optimization
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