Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 369-378 |
| Seitenumfang | 10 |
| Fachzeitschrift | Frontiers of Structural and Civil Engineering |
| Jahrgang | 7 |
| Ausgabenummer | 4 |
| Publikationsstatus | Veröffentlicht - 4 Dez. 2013 |
| Extern publiziert | Ja |
Abstract
In the framework of finite element meshes, a novel continuous/discontinuous deformation analysis (CDDA) method is proposed in this paper for modeling of crack problems. In the present CDDA, simple polynomial interpolations are defined at the deformable block elements, and a link element is employed to connect the adjacent block elements. The CDDA is particularly suitable for modeling the fracture propagation because the switch from continuous deformation analysis to discontinuous deformation analysis is natural and convenient without additional procedures. The SIFs (stress intensity factors) for various types of cracks, such as kinked cracks or curved cracks, can be easily computed in the CDDA by using the virtual crack extension technique (VCET). Both the formulation and implementation of the VCET in CDDA are simple and straightforward. Numerical examples indicate that the present CDDA can obtain high accuracy in SIF results with simple polynomial interpolations and insensitive to mesh sizes, and can automatically simulate the crack propagation without degrading accuracy.
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- Tief- und Ingenieurbau
- Ingenieurwesen (insg.)
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in: Frontiers of Structural and Civil Engineering, Jahrgang 7, Nr. 4, 04.12.2013, S. 369-378.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture modeling
AU - Cai, Yongchang
AU - Zhu, Hehua
AU - Zhuang, Xiaoying
PY - 2013/12/4
Y1 - 2013/12/4
N2 - In the framework of finite element meshes, a novel continuous/discontinuous deformation analysis (CDDA) method is proposed in this paper for modeling of crack problems. In the present CDDA, simple polynomial interpolations are defined at the deformable block elements, and a link element is employed to connect the adjacent block elements. The CDDA is particularly suitable for modeling the fracture propagation because the switch from continuous deformation analysis to discontinuous deformation analysis is natural and convenient without additional procedures. The SIFs (stress intensity factors) for various types of cracks, such as kinked cracks or curved cracks, can be easily computed in the CDDA by using the virtual crack extension technique (VCET). Both the formulation and implementation of the VCET in CDDA are simple and straightforward. Numerical examples indicate that the present CDDA can obtain high accuracy in SIF results with simple polynomial interpolations and insensitive to mesh sizes, and can automatically simulate the crack propagation without degrading accuracy.
AB - In the framework of finite element meshes, a novel continuous/discontinuous deformation analysis (CDDA) method is proposed in this paper for modeling of crack problems. In the present CDDA, simple polynomial interpolations are defined at the deformable block elements, and a link element is employed to connect the adjacent block elements. The CDDA is particularly suitable for modeling the fracture propagation because the switch from continuous deformation analysis to discontinuous deformation analysis is natural and convenient without additional procedures. The SIFs (stress intensity factors) for various types of cracks, such as kinked cracks or curved cracks, can be easily computed in the CDDA by using the virtual crack extension technique (VCET). Both the formulation and implementation of the VCET in CDDA are simple and straightforward. Numerical examples indicate that the present CDDA can obtain high accuracy in SIF results with simple polynomial interpolations and insensitive to mesh sizes, and can automatically simulate the crack propagation without degrading accuracy.
KW - Continuous/discontinuous deformation analysis (CDDA)
KW - Crack
KW - Deformable block
KW - Fracture
KW - Propagation
UR - http://www.scopus.com/inward/record.url?scp=84893664377&partnerID=8YFLogxK
U2 - 10.1007/s11709-013-0222-x
DO - 10.1007/s11709-013-0222-x
M3 - Article
AN - SCOPUS:84893664377
VL - 7
SP - 369
EP - 378
JO - Frontiers of Structural and Civil Engineering
JF - Frontiers of Structural and Civil Engineering
SN - 2095-2430
IS - 4
ER -