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Materials Mechanics Research Group (MAME)

1. Introduction

Materials Mechanics Research Group (MAME) is founded by Ton Duc Thang University. MAME focuses on modern problems in material science and engineering that require the physics-based predictive dislocation theory as well as the effective and accurate computational methods to identify the material parameters and simulate the material behavior of metals and alloys. Another research direction is the dimensional reduction of thin-walled structures made of the composite materials, functionally graded and intelligent materials. Based on the obtained approximate theories for these structures, different numerical methods will be developed to solve practical problems in engineering.

2. Mission and vision

MAME has three main tasks:

- Build the clear and suitable orientations in the scientific research, consisting of solving the mechanical problems and publishing the high quality journal papers.

- Organize regular seminars, conferences, meeting with various national and/or international research groups. These scientific activities help members of MAME to be supported, improved, and educated in major fields of Materials Mechanics.

- Perform transfer of technology such as consulting, supporting, transferring, applying engineering and technology in Materials Mechanics.

3. Research topics

The research focus of Materials Mechanics Research Group is Thermodynamic Dislocation Theory involving disorder temperature. We intend to develop the theory for both uniform and non-uniform plastic deformations and apply it to various engineering problems in material science and metallurgy. This includes:

- Disorder temperature and irreversible thermodynamics;

- Energy and dissipation of dislocated crystals;

- Statistical and homogenization methods;

- Parameter identification using the least squares analysis;

- Numerical methods of solution of practical problems.

Another topic is the mechanics of composite, functionally graded, and smart materials and structures. The aim of this research work is to construct two- and one-dimensional theories of smart structures such as shells, plates and rods with integrated piezoelectric patches using Hamilton’s variational principle combined with the variational-asymptotic method. We also want to construct the approximate theories of shells, plates and rods from the composite or functionally graded materials. We will also develop various analytical and numerical methods to analyze equilibrium and vibrations of intelligent, composite and functionally graded structures, based on previous approximation theories. Finally, we want also to optimize the mechanical properties of these materials and structures based on the approximate theories.

4. Current members


Dr. Khanh Chau Le


• Head of Materials Mechanics Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam

• Professor of Ruhr University Bochum, Germany

Areas of expertise: Variational methods in continuum mechanics, Smart and Functionally Graded Materials, Nonlinear vibrations and wave propagation, Fracture mechanics, Crystal plasticity, Micromechanics, Thermodynamic dislocation theory


• Member of Editorial Board:

- International Journal of Plasticity

- Archive of Applied Mechanics

Research track record (until December of 2020):

• ISI papers: 95

• Total ISI Citations: 1082

• ISI H-index: 19

• Top ISI journals (at most 5):

  1. Proceedings of the National Academy of Sciences USA (Impact factor: 9.412) 
  2. International Journal of Engineering Science (Impact factor: 9.219)
  3. International Journal of Plasticity (Impact factor: 6.490)
  4. Scripta Materialia (Impact factor: 5.079)
  5. Journal of the Mechanics and Physics of Solids (Impact factor: 5.00)

Dr. Tran Tuan Minh

Position: Member of Materials Mechanics Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam

Areas of expertise: Finite element method (FEM), Thermodynamic dislocation theory, Parameter identification using least squares analysis

Research track record (until December of 2020):

• ISI papers: 9

• Total ISI Citations: 81

5. Publications (ISI or Scopus only)

  1. Piao, Y., Le, K.C., Dislocation impediment by the grain boundaries in polycrystals, Acta. Mech. (submitted).
  2. Günther, F., Le, K.C., Plane constrained shear of single crystals, Arch. Appl. Mech. (submitted).
  3. Le, K.C., Dang, S.L., Luu, H.T., Gunkelmann, N., Thermodynamic dislocation theory: Applications to bcc-crystal, Modelling and Simulation in Materials Science and Engineering (to appear).
  4. Langer, J.S., Le, K.C.(2020), Scaling confirmation of the thermodynamic dislocation theory, Proc. Natl. Acad. Sci. U.S.A (ISI).
  5. Le, K.C. (2020), Two universal laws for plastic flows and the consistent thermodynamic dislocation theory, Mechanics Research Communications (ISI).
  6. Le, K.C., Tran, T.M. (2020), Asymptotically exact theory of fiber-reinforced composite beams, Composite Structures (ISI).
  7. Le, K.C., Le, T.H., Tran, T.M. (2020), Averaging in dislocation mediated plasticity, International Journal of Engineering Science (ISI).
  8. Le, K.C., Piao, Y. (2019), Size effect caused by excess dislocations in twisted micro-wires, PAMM (ISI).
  9. Tran, T.M., Le, K.C. (2019), Kinematic hardening and Bauschinger effect, PAMM (ISI).
  10. Le, K.C. (2019), Introduction to Micromechanics, Nova Science (ISI).
  11. K.C. Le (2019), Thermodynamic dislocation theory: Finite deformations, International Journal of Engineering Science (ISI).
  12. Le, K.C., Piao, Y. (2019), Thermodynamic dislocation theory: Size effect in torsion; International Journal of Plasticity, Int. J. Plasticity (ISI).
  13. Le, K.C., Piao, Y. (2018); Non-uniform plastic deformations of crystals undergoing anti-plane constrained shear; Archive of Applied Mechanics (ISI).
  14. Le, K.C., Piao, Y. (2018); Thermal softening during high-temperature torsional deformation of aluminum bars; International Journal of Engineering Science (ISI).
  15. Le, K.C., Piao, Y., Tran, T.M. (2018); Thermodynamic dislocation theory: Torsion of bars; Physical Review E (ISI).
  16. Le, K.C., Tran, T.M. (2018), Thermodynamic dislocation theory: Bauschinger effect, Phys. Rev. E, (ISI).

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