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A platform for research: civil engineering, architecture and urbanism
Simulation of cohesive crack growth by a variable-node XFEM
A new computational approach that combines the extended finite element method associated with variable-node elements and cohesive zone model is developed. By using a new enriched technique based on sign function, the proposed model using 4-node quadrilateral elements can eliminate the blending element problem. It also allows modeling the equal stresses at both sides of the crack in the crack-tip as assumed in the cohesive model, and is able to simulate the arbitrary crack-tip location. The multiscale mesh technique associated with variable-node elements and the arc-length method further improve the efficiency of the developed approach. The performance and accuracy of the present approach are illustrated through numerical experiments considering both mode-I and mixed-mode fracture in concrete.
Simulation of cohesive crack growth by a variable-node XFEM
A new computational approach that combines the extended finite element method associated with variable-node elements and cohesive zone model is developed. By using a new enriched technique based on sign function, the proposed model using 4-node quadrilateral elements can eliminate the blending element problem. It also allows modeling the equal stresses at both sides of the crack in the crack-tip as assumed in the cohesive model, and is able to simulate the arbitrary crack-tip location. The multiscale mesh technique associated with variable-node elements and the arc-length method further improve the efficiency of the developed approach. The performance and accuracy of the present approach are illustrated through numerical experiments considering both mode-I and mixed-mode fracture in concrete.
Simulation of cohesive crack growth by a variable-node XFEM
Front. Struct. Civ. Eng.
Fang, Weihua (author) / Wu, Jiangfei (author) / Yu, Tiantang (author) / Nguyen, Thanh-Tung (author) / Bui, Tinh Quoc (author)
Frontiers of Structural and Civil Engineering ; 14 ; 215-228
2020-02-01
14 pages
Article (Journal)
Electronic Resource
English
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