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A platform for research: civil engineering, architecture and urbanism
The enriched finite element method-virtual crack closure technique for cracked structures
https://orcid.org/0000-0003-4594-8295
https://orcid.org/0000-0002-5238-3803
https://orcid.org/0000-0003-4609-1481
Abstract In the present work, the enriched finite element method (EFEM) and virtual crack closure technology (VCCT) are applied to model the fracture mechanics problems of structures. EFEM-VCCT is used for improving the accuracy and efficiency of the standard FEM in solving the fracture parameters of cracked structures. The models with different structures, crack lengths and meshes are calculated and compared with the finite element method-VCCT (FEM-VCCT). By introducing the interpolation cover function, the computational efficiency and accuracy of EFEM-VCCT are improved. This improvement is confirmed by a series of numerical examples. The problems of crack initiation and crack growth under different materials and loading conditions are analyzed. The high accuracy of EFEM-VCCT under a relatively coarse mesh is demonstrated through a series of numerical examples. In the numerical analysis of fracture mechanics, EFEM-VCCT can be considered a very good alternative to FEM-VCCT due to its high efficiency and accuracy.
Highlights The EFEM-virtual crack closure technique (EFEM-VCCT) is derived. The developed EFEM-VCCT can markedly reduce the numerical error for simulating engineering fracture problems. The EFEM-VCCT has higher computation accuracy and more excellent convergence properties than the original FEM-VCCT. The presented method works well for relatively coarse meshes.
The enriched finite element method-virtual crack closure technique for cracked structures
https://orcid.org/0000-0003-4594-8295
https://orcid.org/0000-0002-5238-3803
https://orcid.org/0000-0003-4609-1481
Abstract In the present work, the enriched finite element method (EFEM) and virtual crack closure technology (VCCT) are applied to model the fracture mechanics problems of structures. EFEM-VCCT is used for improving the accuracy and efficiency of the standard FEM in solving the fracture parameters of cracked structures. The models with different structures, crack lengths and meshes are calculated and compared with the finite element method-VCCT (FEM-VCCT). By introducing the interpolation cover function, the computational efficiency and accuracy of EFEM-VCCT are improved. This improvement is confirmed by a series of numerical examples. The problems of crack initiation and crack growth under different materials and loading conditions are analyzed. The high accuracy of EFEM-VCCT under a relatively coarse mesh is demonstrated through a series of numerical examples. In the numerical analysis of fracture mechanics, EFEM-VCCT can be considered a very good alternative to FEM-VCCT due to its high efficiency and accuracy.
Highlights The EFEM-virtual crack closure technique (EFEM-VCCT) is derived. The developed EFEM-VCCT can markedly reduce the numerical error for simulating engineering fracture problems. The EFEM-VCCT has higher computation accuracy and more excellent convergence properties than the original FEM-VCCT. The presented method works well for relatively coarse meshes.
The enriched finite element method-virtual crack closure technique for cracked structures
https://orcid.org/0000-0003-4594-8295
https://orcid.org/0000-0002-5238-3803
https://orcid.org/0000-0003-4609-1481
Abstract In the present work, the enriched finite element method (EFEM) and virtual crack closure technology (VCCT) are applied to model the fracture mechanics problems of structures. EFEM-VCCT is used for improving the accuracy and efficiency of the standard FEM in solving the fracture parameters of cracked structures. The models with different structures, crack lengths and meshes are calculated and compared with the finite element method-VCCT (FEM-VCCT). By introducing the interpolation cover function, the computational efficiency and accuracy of EFEM-VCCT are improved. This improvement is confirmed by a series of numerical examples. The problems of crack initiation and crack growth under different materials and loading conditions are analyzed. The high accuracy of EFEM-VCCT under a relatively coarse mesh is demonstrated through a series of numerical examples. In the numerical analysis of fracture mechanics, EFEM-VCCT can be considered a very good alternative to FEM-VCCT due to its high efficiency and accuracy.
Highlights The EFEM-virtual crack closure technique (EFEM-VCCT) is derived. The developed EFEM-VCCT can markedly reduce the numerical error for simulating engineering fracture problems. The EFEM-VCCT has higher computation accuracy and more excellent convergence properties than the original FEM-VCCT. The presented method works well for relatively coarse meshes.
The enriched finite element method-virtual crack closure technique for cracked structures
Zhou, Liming (author) / Wang, Jiye (author) / Wang, Yajin (author) / Li, Xintong (author) / Chai, Yingbin (author)
Thin-Walled Structures ; 187
2023-04-05
Article (Journal)
Electronic Resource
English
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