Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Multi-Scale Model Crack Extension Study Based on XFEM

Version 1 : Received: 13 April 2023 / Approved: 13 April 2023 / Online: 13 April 2023 (08:59:11 CEST)

How to cite: Liu, G.; Chen, Z. Multi-Scale Model Crack Extension Study Based on XFEM. Preprints 2023, 2023040316. https://doi.org/10.20944/preprints202304.0316.v1 Liu, G.; Chen, Z. Multi-Scale Model Crack Extension Study Based on XFEM. Preprints 2023, 2023040316. https://doi.org/10.20944/preprints202304.0316.v1

Abstract

The link of fracture analysis of large ships is an essential part of the structural safety of ships. However, the finite element analysis of large structure according to the traditional method not only has high requirements on the computer, but also the influence of the mesh encryption at special locations makes further requirements on the accuracy of the ship. In this paper, based on the extended finite element method (XFEM) and the multi-point constraint method (MPC), the dynamic crack expansion process of the rectangular plate containing cracks under the multi-scale model is comparatively studied by using ABAQUS simulation software Finally, the applicability of the method is verified by applying the multi-scale model of ship nodes. The results show that the computational effort of the multi-scale model is significantly reduced with the same accuracy and allowable error, which proves the accuracy and efficiency of the method.

Keywords

Extend the finite element; multi-point constraint; ship crack

Subject

Engineering, Marine Engineering

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