Abstract
The determination of fracture parameters such as mode I and II stress intensity factors, KI and KII, is of considerable practical importance in the analysis and failure prediction of various types of structures. For example, interfacial cracks may develop and propagate in bonded joints or lead to delaminations in composite materials. The finite element method is a powerful technique for analyzing complex structures; however, the singular behavior near crack tips is poorly approximated by conventional finite elements and convergence theorems cease to be applicable at those locations. In a previous paper, a combined analytical and numerical model based on frictionless crack face contact was used to obtain fracture parameters at interfacial cracks in composite laminates in cylindrical bending and subject to transverse loads. In this article, we further consider the method and extend the previous results by considering a variety of shear and normal loads on a cracked bimaterial plate with isotropic or orthotropic materials. Furthermore, additional validation of the method is provided by comparing the results with closed form solutions in the literature for the special case of isotropic materials in a combined tensile and shear field, and good agreement is found. Overall, we conclude that the method provides a practical way to analyze a variety of engineering structures with interfacial cracks.
| Original language | English (US) |
|---|---|
| Journal | Journal of Thermoplastic Composite Materials |
| DOIs | |
| State | Accepted/In press - Jan 1 2017 |
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Keywords
- bonded joints
- composite materials
- Fracture mechanics
- interfacial cracks
- stress intensity factors
ASJC Scopus subject areas
- Ceramics and Composites
- Condensed Matter Physics
Cite this
Analysis of the partially closed interface crack in orthotropic materials. / Penado, F E.
In: Journal of Thermoplastic Composite Materials, 01.01.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Analysis of the partially closed interface crack in orthotropic materials
AU - Penado, F E
PY - 2017/1/1
Y1 - 2017/1/1
N2 - The determination of fracture parameters such as mode I and II stress intensity factors, KI and KII, is of considerable practical importance in the analysis and failure prediction of various types of structures. For example, interfacial cracks may develop and propagate in bonded joints or lead to delaminations in composite materials. The finite element method is a powerful technique for analyzing complex structures; however, the singular behavior near crack tips is poorly approximated by conventional finite elements and convergence theorems cease to be applicable at those locations. In a previous paper, a combined analytical and numerical model based on frictionless crack face contact was used to obtain fracture parameters at interfacial cracks in composite laminates in cylindrical bending and subject to transverse loads. In this article, we further consider the method and extend the previous results by considering a variety of shear and normal loads on a cracked bimaterial plate with isotropic or orthotropic materials. Furthermore, additional validation of the method is provided by comparing the results with closed form solutions in the literature for the special case of isotropic materials in a combined tensile and shear field, and good agreement is found. Overall, we conclude that the method provides a practical way to analyze a variety of engineering structures with interfacial cracks.
AB - The determination of fracture parameters such as mode I and II stress intensity factors, KI and KII, is of considerable practical importance in the analysis and failure prediction of various types of structures. For example, interfacial cracks may develop and propagate in bonded joints or lead to delaminations in composite materials. The finite element method is a powerful technique for analyzing complex structures; however, the singular behavior near crack tips is poorly approximated by conventional finite elements and convergence theorems cease to be applicable at those locations. In a previous paper, a combined analytical and numerical model based on frictionless crack face contact was used to obtain fracture parameters at interfacial cracks in composite laminates in cylindrical bending and subject to transverse loads. In this article, we further consider the method and extend the previous results by considering a variety of shear and normal loads on a cracked bimaterial plate with isotropic or orthotropic materials. Furthermore, additional validation of the method is provided by comparing the results with closed form solutions in the literature for the special case of isotropic materials in a combined tensile and shear field, and good agreement is found. Overall, we conclude that the method provides a practical way to analyze a variety of engineering structures with interfacial cracks.
KW - bonded joints
KW - composite materials
KW - Fracture mechanics
KW - interfacial cracks
KW - stress intensity factors
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U2 - 10.1177/0892705717729012
DO - 10.1177/0892705717729012
M3 - Article
AN - SCOPUS:85042462432
JO - Journal of Thermoplastic Composite Materials
JF - Journal of Thermoplastic Composite Materials
SN - 0892-7057
ER -