Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture modeling
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.
A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture modeling
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.
A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture modeling
Cai, Yongchang (Autor:in) / Zhu, Hehua (Autor:in) / Zhuang, Xiaoying (Autor:in)
Frontiers of Structural and Civil Engineering ; 7 ; 369-378
01.12.2013
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Vibration Analysis of Laminated Blocks by Discontinuous Deformation Analysis
| British Library Conference Proceedings | 2006
Discontinuous Deformation Analysis Framework for Modelling Concrete Fracture
| British Library Conference Proceedings | 1998
| DOAJ | 2023
| British Library Online Contents | 2018
| British Library Online Contents | 2016