Multifield Variational Sectional Analysis for Accurate Stress Computation of Multilayered Composite Beams

AIAA Journal ◽  
2019 ◽  
Vol 57 (4) ◽  
pp. 1702-1714 ◽  
Author(s):  
Manoj Kumar Dhadwal ◽  
Sung Nam Jung
Keyword(s):  
Composite Beams ◽  
Multilayered Composite ◽  
Stress Computation ◽  
Sectional Analysis ◽  
Accurate Stress

Sectional analysis of engineered cementitious composite beams

2018 ◽  
Vol 70 (22) ◽  
pp. 1135-1148 ◽  
Author(s):  
Benny Suryanto ◽  
Robin Reynaud ◽  
Blair Cockburn
Keyword(s):  
Composite Beams ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite ◽  
Sectional Analysis

Thermo-mechanical analysis of multilayered composite beams based on a new mixed global-local model

2019 ◽  
Vol 53 (28-30) ◽  
pp. 3963-3978 ◽  
Author(s):  
Qilin Jin ◽  
Ziming Mao ◽  
Xiaofei Hu ◽  
Weian Yao
Keyword(s):  
Transverse Shear ◽  
Order Theory ◽  
Mechanical Analysis ◽  
Composite Beams ◽  
Higher Order ◽  
Shear Stresses ◽  
Mixed Form ◽  
Multilayered Composite ◽  
Proposed Model ◽  
Higher Order Theory

An accurate mixed-form global-local higher-order theory including transverse normal thermal deformation is developed for thermo-mechanical analysis of multilayered composite beams. Although transverse normal deformation is considered, the number of displacement parameters is not increased. The proposed mixed-form global-local higher-order theory is derived using the displacement assumptions of global-local higher-order theory in conjunction with the Reissner mixed variational theorem. Moreover, the mixed-form global-local higher-order theory retains a fixed number of displacement variables regardless of the number of layers. In order to obtain the improved transverse shear stresses, the three-dimensional equilibrium equation is used. It is significant that the second-order derivatives of in-plane displacement variables have been eliminated from the transverse shear stress field, such that the finite element implementation is greatly simplified. The benefit of the proposed mixed-form global-local higher-order theory is that no post-processing integration procedure is needed to accurately calculate the transverse shear stresses. The equilibrium equations and analytical solution of the proposed model can be obtained based on the Reissner mixed variational equation. The performance of the proposed model is assessed through different numerical examples, and the results show that the proposed model can better predict the thermo-mechanical responses of multilayered composite beams.

Cross-sectional analysis of composite beams including large initial twist and curvature effects

AIAA Journal ◽  
1996 ◽  
Vol 34 (9) ◽  
pp. 1913-1920 ◽  
Author(s):  
Carlos E. S. Cesnik ◽  
Dewey H. Hodges ◽  
Vladislav G. Sutyrin
Keyword(s):  
Composite Beams ◽  
Cross Sectional ◽  
Curvature Effects ◽  
Cross Sectional Analysis ◽  
Sectional Analysis
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