scholarly journals Damage Mechanics Analysis of Transverse Cracks in Composite Laminates.

1998 ◽  
Vol 47 (1) ◽  
pp. 68-72 ◽  
Author(s):  
Shinji OGIHARA ◽  
Nobuo TAKEDA ◽  
Satoshi KOBAYASHI ◽  
Akira KOBAYASHI
Keyword(s):  
Composite Laminates ◽  
Damage Mechanics ◽  
Transverse Cracks ◽  
Mechanics Analysis

Damage Mechanics Analysis of Transverse Cracking Behavior in Composite Laminates

2000 ◽  
Vol 9 (2) ◽  
pp. 113-129 ◽  
Author(s):  
Shinji Ogihara ◽  
Akira Kobayashi ◽  
Nobuo Takeda ◽  
Satoshi Kobayashi
Keyword(s):  
Composite Laminates ◽  
Damage Mechanics ◽  
Cracking Behavior ◽  
Transverse Cracking ◽  
Mechanics Analysis

scholarly journals Continuum damage mechanics modeling of composite laminates including transverse cracks

2017 ◽  
Vol 27 (6) ◽  
pp. 877-895 ◽  
Author(s):  
Tomonaga Okabe ◽  
Sota Onodera ◽  
Yuta Kumagai ◽  
Yoshiko Nagumo
Keyword(s):  
Composite Laminates ◽  
Damage Mechanics ◽  
Elastic Moduli ◽  
Crack Density ◽  
Continuum Damage Mechanics ◽  
Damage Variable ◽  
Continuum Damage ◽  
Transverse Cracks ◽  
Element Analysis ◽  
The Finite Element Analysis

In this study, the continuum damage mechanics model for predicting the stiffness reduction of composite laminates including transverse cracks is formulated as a function of crack density. To formulate the model, first the damage variable in the direction normal to the fiber of a ply including transverse cracks is derived. The damage variable is derived by the model assuming a plane strain field in the isotropic plane and using the Gudmundson–Zang model for comparison. The effective compliance based on the strain equivalent principle proposed by Murakami et al. and classical laminate theory are then used to formulate the elastic moduli of laminates of arbitrary lay-up configurations as a function of the damage variable. Finally, the results obtained from this model are compared to the finite-element analysis reported in previous studies. The model proposed in this paper can predict the stiffness of laminates containing damage due to transverse cracks (or surface crack) from just the mechanical properties of a ply and the lay-up configurations. Furthermore, this model can precisely predict the finite-element analysis results and experiment results for the elastic moduli of the laminate of arbitrary lay-up configuration, such as cross-ply, angle ply, and quasi-isotropic, including transverse cracks. This model only considers the damage of the transverse crack; it does not consider damage such as delamination. However, this model seems to be effective in the early stage of damage formation when transverse cracking mainly occurs. The model assuming plane strain field in the isotropic plane which is proposed in this paper can calculate the local stress distribution in a ply including transverse cracks as a function of crack density. The damage evolution of transverse cracks can thus be simulated by determining the fracture criterion.

Damage Mechanics Analysis of Transverse Cracking Behavior in Composite Laminates

2000 ◽  
Vol 9 (2) ◽  
pp. 113-129 ◽  
Author(s):  
SHINJI OGIHARA ◽  
AKIRA KOBAYASHI ◽  
NOBUO TAKEDA ◽  
SATOSHI KOBAYASHI
Keyword(s):  
Composite Laminates ◽  
Damage Mechanics ◽  
Cracking Behavior ◽  
Transverse Cracking ◽  
Mechanics Analysis

A Damage Model Containing Delamination in Composite Laminates

2006 ◽  
Vol 324-325 ◽  
pp. 43-46
Author(s):  
Yu Pu Ma ◽  
Xin Zhi Lin ◽  
Qing Fen Li ◽  
Zhen Li
Keyword(s):  
Composite Laminates ◽  
Damage Model ◽  
Laminated Composite ◽  
Shear Lag ◽  
Analysis Model ◽  
Transverse Cracks ◽  
Transverse Cracking ◽  
Stiffness Reduction ◽  
Laminated Composite Materials ◽  
Modulus Reduction

When stress is high, delaminate damage can be induced by transverse cracks. A complete parabolic shear-lag damage model containing delamination induced by transverse cracks is therefore proposed and applied to predict the stiffness reduction by transverse cracking in cross-ply laminated composite materials. The predictions of the complete parabolic shear-lag analysis model, the incomplete parabolic shear-lag analysis model, and the complete parabolic shear-lag damage model containing delamination proposed in this paper have been compared. Results show that the young’s modulus reduction values obtained by our analysis model are better agreement with the experimental ones than other models.

Sign in / Sign up

Export Citation Format

Share Document