Project's information

Project's title Simulate the crack propagation in elastic gradient materials, applied in grid and composite materials
Project’s code VAST01.02/21-22
Research hosting institution Center for Informatics and Computing
Project leader’s name Dr. Pham Hong Cong
Project duration 01/01/2021 - 31/12/2022
Project’s budget 600 million VND
Classify Grade A
Goal and objectives of the project
Composite and meta materials (materials with grid structure, hollow structure, ...) have been widely studied and applied in modern industry. Due to the complex structure and manufacturing process of the material, it is easy to appear defects in the manufacturing process. The appearance of cracks will significantly reduce the hardness, strength and the material properties. During working period, the  the cracks are likely to be larger. Therefore, it is necessary that the effects of cracks as well as crack propagation in composite and meta-materials be studied. 
The objective of the present project is to simulate the crack propagation in elastic gradient materials, applied in grid and composite materials. 
Main results
No. Outcomes  Unit

Specification
  Technology research and development outcomes
    
1 Freefem++ calculation program system for solid mechanics
 01 The system of codes programed on FreeFEM++ software to help introduce the study of solid mechanics includes:
- Code for calculating small deformation for elastic materials. 
- Code for calculating heat transfer. 
- Code for calculating thermal stress for elastic materials.
- Code for calculating crack propagation
  Publication:    
1 Publication of articles in international journals 01 03 journal papers in Q1 journal.
2 Publication of artilces in a journal under the list of VAST2 01 01 journal papers in Vietnam Journal of Science and Technology (VAST01). 
3 Publication of articles in national journals 01 01 article in a national journal
 

Training:

    
1 Master students 01 Support training 01 Master students
Novelty and actuality and scientific meaningfulness of the results

- Use phase-field theory combined with finite element method to describe the crack propagation process in microstructure, considering the influence of size effect.
- Apply phase-field theory and finite element method to simulate the mechanical response of structures made of grid, composite and crack materials.
- Investigate the effects of some parameters on the mechanical response of structures made of different materials with cracks.
Products of the project

- Scientific papers in referred journals (list):
1. Pham Hong Cong, Do Van Thom, Doan Hong Duc, Phase field model for fracture based on modified couple stress. Engineering Fracture Mechanics 269 (2022) 108534, https://doi.org/10.1016/j.engfracmech.2022.108534 (Q1, IF=4.85, SCI)
2. Nguyen Chi Tho, Do Van Thom, Pham Hong Cong, Ashraf M. Zenkour, Duc Hong Doan, Phung Van Minh. Finite element modeling of the bending and vibration behavior of three-layer composite plates with a crack in the core layer. Composite Structures, 2022, Accepted for publication (Q1, IF=5.407, SCIE)
3. Pham Hong Cong, Vu Dinh Trung, Nguyen Dinh Khoa, Vibration and nonlinear dynamic response of temperature-dependent FG-CNTRC laminated double curved shallow shell with positive and negative Poisson’s ratio. Thin-Walled Structures 171 (2022) 108713, https://doi.org/10.1016/j.tws.2021.108713 (Q1, IF=5.881, SCI)
4. Pham Hong Cong, Do Van Thom, Doan Hong Duc, Phung Van Minh, Pham Duc Nhat, Dong Xuan Truong, Mix-mode fracture of micro plate, Vietnam Journal of Science and Technology 2023 (Accepted for publication, VAST2)
5. Pham Hong Cong, Vu Dinh Trung, Do Duc Hai, Nguyen Dinh Khoa, Free vibration and bending of gradient auxetic plate using finite element method. VNU Journal of Science: Mathematics – Physics, Vol. 37, No. 4 (2021) 102-118
- Technological products (describe in details: technical characteristics, place):
The system of codes programed on FreeFEM++ software to help introduce the study of solid mechanics includes:
- Code for calculating small deformation for elastic materials. 
- Code for calculating heat transfer. 
- Code for calculating thermal stress for elastic materials.
- Code for calculating crack propagation.
- Other products (if applicable): Training: The successful guide for 1 master students:
Pham Duc Nhat (Hanoi University of Science and Technology)
Images of project
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