Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method
In this paper, the particle size-dependent issue of Lattice Particle Method (LPM) for simulating dynamic brittle and quasi-brittle fracture is addressed by coupling LPM with a local damage model based on fracture energy. The proposed model is simple and more robust than the Stress Intensity Factor (...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/77653/ |
| _version_ | 1848801213241360384 |
|---|---|
| author | Ng, Khai Ching Chen, Hailong Low, Wei Chen |
| author_facet | Ng, Khai Ching Chen, Hailong Low, Wei Chen |
| author_sort | Ng, Khai Ching |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In this paper, the particle size-dependent issue of Lattice Particle Method (LPM) for simulating dynamic brittle and quasi-brittle fracture is addressed by coupling LPM with a local damage model based on fracture energy. The proposed model is simple and more robust than the Stress Intensity Factor (SIF)-based approach as it can model mixed-mode fracture with multiple cracks without any application-dependent tuning parameter. Numerical procedures for estimating the dissipative energy and the crack tip velocity for LPM simulation are also proposed. A series of benchmark problems involving dynamic fracture and crack branching are simulated using the proposed model. Good agreements are found against existing experimental observation and solutions from other numerical methods. Although a Cartesian-like (structured) lattice configuration is employed in the current LPM method, physically meaningful and accurate crack patterns can still be captured without any special numerical treatment. |
| first_indexed | 2025-11-14T21:00:47Z |
| format | Article |
| id | nottingham-77653 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T21:03:53Z |
| publishDate | 2024 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-776532025-09-03T14:52:11Z https://eprints.nottingham.ac.uk/77653/ Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method Ng, Khai Ching Chen, Hailong Low, Wei Chen In this paper, the particle size-dependent issue of Lattice Particle Method (LPM) for simulating dynamic brittle and quasi-brittle fracture is addressed by coupling LPM with a local damage model based on fracture energy. The proposed model is simple and more robust than the Stress Intensity Factor (SIF)-based approach as it can model mixed-mode fracture with multiple cracks without any application-dependent tuning parameter. Numerical procedures for estimating the dissipative energy and the crack tip velocity for LPM simulation are also proposed. A series of benchmark problems involving dynamic fracture and crack branching are simulated using the proposed model. Good agreements are found against existing experimental observation and solutions from other numerical methods. Although a Cartesian-like (structured) lattice configuration is employed in the current LPM method, physically meaningful and accurate crack patterns can still be captured without any special numerical treatment. 2024-03-20 Article PeerReviewed application/pdf en cc_by https://eprints.nottingham.ac.uk/77653/1/1-s2.0-S0167844224001356-main.pdf Ng, Khai Ching, Chen, Hailong and Low, Wei Chen (2024) Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method. Theoretical and Applied Fracture Mechanics, 131 (104386). ISSN 1872-7638 Dynamic fracture ; Meshfree models ; Lattice Particle Method (LPM) ; Local damage model ; Isotropic damage model ; Lattice Spring Model (LSM) https://www.sciencedirect.com/science/article/pii/S0167844224001356?via%3Dihub 10.1016/j.tafmec.2024.104386 10.1016/j.tafmec.2024.104386 10.1016/j.tafmec.2024.104386 |
| spellingShingle | Dynamic fracture ; Meshfree models ; Lattice Particle Method (LPM) ; Local damage model ; Isotropic damage model ; Lattice Spring Model (LSM) Ng, Khai Ching Chen, Hailong Low, Wei Chen Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method |
| title | Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method |
| title_full | Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method |
| title_fullStr | Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method |
| title_full_unstemmed | Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method |
| title_short | Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method |
| title_sort | meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method |
| topic | Dynamic fracture ; Meshfree models ; Lattice Particle Method (LPM) ; Local damage model ; Isotropic damage model ; Lattice Spring Model (LSM) |
| url | https://eprints.nottingham.ac.uk/77653/ https://eprints.nottingham.ac.uk/77653/ https://eprints.nottingham.ac.uk/77653/ |