Abstract
The intent of this paper is to investigate mixed mode interface fracture toughness Jc. Many workers have shown by experiments that the interface fracture toughness depends on the mode mixity. However, the definition of the interface stress intensity factor is not clarified and therefore the mode mixity varies with the characteristic length L of the interface stress intensity factor. To evaluate the strength of an interface, it is important to model the fracture behavior of the interface. The cohesive force model is a direct way to represent the interface nonlinear properties. Based on the internal variable theory of thermodynamics, a continuum interface constitutive relation between interface traction and interface separation has been developed. In this paper, we apply this constitutive model to the interface crack. The interface fracture toughness is analyzed for a wide range of bimaterial constant by Finite Element Method. The results show that the fracture boundary curve is elliptical shape and changes with the ratio of the Young's modulus. The interface fracture toughness is strongly influenced by the mode mixity. However, if the characteristic length L of the interface stress intensity factor is chosen suitably, the intrinsic fracture criterion can be derived.
| Original language | English |
|---|---|
| Pages (from-to) | 532-539 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A |
| Volume | 66 |
| Issue number | 643 |
| Publication status | Published - 2000 |
| Externally published | Yes |
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Keywords
- Bimaterial
- Cohesive force model
- Damage mechanics
- Finite Element Method
- Fracture criterion
- Fracture toughness
- Interface crack
- Mixed mode
- Stress intensity factor
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Materials Science(all)
Cite this
Finite element analysis of interface crack in bimaterial media using cohesive force model. / Omiya, Masaki; Kishimoto, Kikuo; Shibuya, Toshikazu.
In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 66, No. 643, 2000, p. 532-539.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Finite element analysis of interface crack in bimaterial media using cohesive force model
AU - Omiya, Masaki
AU - Kishimoto, Kikuo
AU - Shibuya, Toshikazu
PY - 2000
Y1 - 2000
N2 - The intent of this paper is to investigate mixed mode interface fracture toughness Jc. Many workers have shown by experiments that the interface fracture toughness depends on the mode mixity. However, the definition of the interface stress intensity factor is not clarified and therefore the mode mixity varies with the characteristic length L of the interface stress intensity factor. To evaluate the strength of an interface, it is important to model the fracture behavior of the interface. The cohesive force model is a direct way to represent the interface nonlinear properties. Based on the internal variable theory of thermodynamics, a continuum interface constitutive relation between interface traction and interface separation has been developed. In this paper, we apply this constitutive model to the interface crack. The interface fracture toughness is analyzed for a wide range of bimaterial constant by Finite Element Method. The results show that the fracture boundary curve is elliptical shape and changes with the ratio of the Young's modulus. The interface fracture toughness is strongly influenced by the mode mixity. However, if the characteristic length L of the interface stress intensity factor is chosen suitably, the intrinsic fracture criterion can be derived.
AB - The intent of this paper is to investigate mixed mode interface fracture toughness Jc. Many workers have shown by experiments that the interface fracture toughness depends on the mode mixity. However, the definition of the interface stress intensity factor is not clarified and therefore the mode mixity varies with the characteristic length L of the interface stress intensity factor. To evaluate the strength of an interface, it is important to model the fracture behavior of the interface. The cohesive force model is a direct way to represent the interface nonlinear properties. Based on the internal variable theory of thermodynamics, a continuum interface constitutive relation between interface traction and interface separation has been developed. In this paper, we apply this constitutive model to the interface crack. The interface fracture toughness is analyzed for a wide range of bimaterial constant by Finite Element Method. The results show that the fracture boundary curve is elliptical shape and changes with the ratio of the Young's modulus. The interface fracture toughness is strongly influenced by the mode mixity. However, if the characteristic length L of the interface stress intensity factor is chosen suitably, the intrinsic fracture criterion can be derived.
KW - Bimaterial
KW - Cohesive force model
KW - Damage mechanics
KW - Finite Element Method
KW - Fracture criterion
KW - Fracture toughness
KW - Interface crack
KW - Mixed mode
KW - Stress intensity factor
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UR - http://www.scopus.com/inward/citedby.url?scp=77949686220&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:77949686220
VL - 66
SP - 532
EP - 539
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
SN - 0387-5008
IS - 643
ER -