Mathias Brieu

Mathias Brieu
Engineering, Computer Science, and Technology
Mechanical Engineering
Office Location ETA-135
(323) 343-4489

"If we can really understand the problem, the answer will come out of it, because the answer is not separate from the problem" - Jiddu Krishnamurit (Indian philosopher, 1895 - 1986)


I am Professor of Mechanical Engineering with a specialty in mechanics of materials and computational mechanics.  Prior to joining Cal State LA, I was Professor in a higher education school of engineer: Centrale Lille. I am still having interaction with my former institution and my research are developped in a synergy between France and USA where I am developping activities in the field of Bio Medical Engineering.


ME 2010 - Statics

Tu-Th - 4:30 - 5:45 pm

KH - C 4075

ME 2050 - Strength of materials

Tu-Th - 10:50 am - 12:05 pm

SH 244

ME 4500 - Biomechanics

MW - 1:40 - 2:55 pm KH B 2016

Office & Advising hours

Tuesday - 8:30 - 10:00 am

Thursday - 1:30 - 3:00 pm

ET - A 135



My reserach activities are based on the triptych of mechanics of materials: experimental characterizationm constitutive modelling, and numerical and computational methods.

I am more focused on soft polymers and bio-polymers. My activities can be summarized in 3 fields:

  • Behavior, and damage of synthetic polymers
  • Behavior of human soft tissue and medical implants,
  • Development and design of Medical Devices for patient-specific surgery.

Additional information on my activities can be found on my website


Only the 4 last year are listed. Additional publication can be found on my website.

  1. Zhifan J., Mayeur O., Witz JF., Lecomte-Grosbras P., Cosson M., Duriez C., Brieu M., Virtual image correlation of magnetic images for 3D geometric modelling of pelvic organs, Strain, DOI: 10.1111/str.12305, 2019
  2. L. Astruc, M. De Meulaere, J.F. Witz, V. Nováček, F. Turquier, T. Hoc, M. Brieu, Characterization of the anisotropic mechanical behavior of human abdominal wall connective tissues, J. Mech. Behavior Biomed. Mat. (Imp. Factor: 3.76), Vol. 82, p. 45-50, 2018.
  3.    E. Jean Dit Gautier, O. Mayeur, J. Lepage, M. Brieu, M. Cosson, C. Rubod, Pregnancy impact on uterosacral ligament and pelvic muscles using a 3D numerical and finite element model: preliminary results, Int. Urogynecology J. (Imp. Factor: 1.94), Vol. 29, Is. 3, p. 425-430, 2018.
  4.    M. Castres, J. Berthe, E. Deletombe, M. Brieu, Experimental evaluation of the elastic limit of carbon-fibre reinforced epoxy composites under a large range of strain rate and temperature conditions, Strain (Imp. Factor: 1.69), Vol. 53, Is. 6, Article number e12248, 2018.
  5.   D. Roucou, J. Diani, M. Brieu, JF. Witz, A. Mbiakop-Ngassa, Experimental investigation of elastomer mode I fracture: an attempt to estimate the critical strain energy release rate using SENT tests, Int. J. Fracture (Imp. Factor: 2.25), p. 1-8, 2017.
  6. J. De Wolf, M. Brieu, C. Zawadzki, A. Ung, E. Kipnis, E, R. Jashari, T. Hubert, P. Fayoux, C. Mariette, MC. Copin, A. Wurtz, Successful immunosuppressant-free heterotopic transplantation of tracheal allografts in the pig, European J. of Cardio-Thoracic surgery (Imp. Factor: 3.76), Vol. 52, Is. 2, p. 248-255, 2017.
  7. Z. Jiang, JF. Witz, P. Lecomte-Grosbras, J. Dequidt, S. Cotin, C. Rubod, C. Duriez, M. Brieu, Multi-organ motion tracking in dynamic magnetic resonance imaging for evaluation of pelvic system mobility and shear strain, Strain (Imp. Factor: 1.69), Vol. 53, Is. 2, DOI 10.1111/str.12224, 2017.
  8. N. Tran, J. Berthe, M. Brieu, G. Portemont, J. Schneider, Characterization of High Strain Rate Dependency of 3D CFRP Materials, Dynamic behavior of materials, Vol. 1, Book series, p. 111-116, 2017.
  9. A. Morch, B. Pouseele, G. Doucede, JF. Witz, F. Lesafre, P. Lecomte-Grosbras, M. Brieu, M. Cosson, C. Rubod, Experimental study of the mechanical behavior of an explanted mesh: Influence of healing, J. Mech. Behavior Biomed. Mat. (Imp. Factor: 3.76), Vol. 65, p. 190-199, 2017.
  10. G. Lamblin, O. Mayeur, G. Giraudet, EJD. Gautier, G. Chene, M. Brieu, C. Rubod, M. Cosson, Pathophysiological aspects of cystocele with 3D finite elements model, Arch. Gynecology Obstetrics, (Imp. Factor: 2.09), Vol. 294, Is. 5, p. 983-989, 2016.
  11. E. Jeanditgautier, O. Mayeur, M. Brieu, G. Lamblin, C. Rubod, M. Cosson, Mobility and stress analysis of different surgical simulations during a sacral colpopexy, using finite element model of the pelvic system, Int. Urogynecology J. (Imp. Factor: 1.94), Vol. 27, Is. 6, p. 951,957, 2016.
  12. M. Brieu, P. Chantereau, J. Gillibert, L. de Landscheere, P. Lecomte, M. Cosson, A nonlinear-elastic constitutive model for soft connective tissue based on a histologic description: Application to female pelvic soft tissue, J. Mech. Behavior Biomed. Mat. (Imp. Factor: 3.11), Vol. 58, p. 65-74, 2016.
  13. L. de Landscheere, M. Brieu, S. Blacher, C. Munaut, B. Nusgens, C. Rubod, A. Noel, JM. Foidart, M. Nisolle, M. Cosson, Elastin density: link between histological and biomechanical properties of vaginal tissue in women with pelvic organ prolapse?, Int. Urogynecology J. (Imp. Factor: 1.94), Vol. 27, Is. 4, p. 629-635, 2016.
  14. J. Lepage, M. Cosson, O. Mayeur, M. Brieu, C. Rubod, Pedagogical childbirth simulators: utility in obstetrics, Eur. J. Obstetrics Gynecology Reprod. Biol. (Imp. Factor: 1.66), Vol. 197, p. 41-47, 2016.
  15. J. Lepage, M. Cosson, O. Mayeur, M. Brieu, C. Rubod, The role of chidlbirth research in clinical practice, Int. J. Gynecology Obstetrics. (Imp. Factor: 2.18), Vol. 132, Is. 2, p. 234-235, 2016.
  16. O. Mayeur, JF. Witz, P. Lecomte, M. Brieu, M. Cosson, K. Miller, Influence of geometry and mechanical properties ont he accuracy of patient-specific simulation of women pelvic floor, Annals Biomed. Engg. . (Imp. Factor: 3.22), Vol 44, Is. 1, p. 202-212, 2016.
  17. P. Lecomte-Grosbras, JF. Witz, M. Brieu, N. Faye, M. Cosson, C. Rubod, Quantification of pelvic mobility on dynamic Magnetic Resonance Images: Using mechanical insight to help diagnose pelvic pathologies, Strain. (Imp. Factor: 1.69), Vol. 51, Is. 4, p. 301-310, 2015.
  18. J. Diani, M. Brieu, K. Blatzer, P. Zerlauth, Effect of the Mullins softening on mode I fracture of carbon-black filled rubbers, Int. J. Fracture (Imp. Factor: 2.25), Vol. 194, Is. 1, p. 11-18, 2015.
  19. Z. Jiang, JF. Witz, P. Lecomte-Grosbras, J. Dequidt, C. Duriez, Cosson M., S. Cotin, M. Brieu, B-spline based multi-organ detection in magnetic resonance imaging, Strain (Imp. Factor: 1.69), Vol. 51, Is. 3, p. 235-247, 2015.
  20. J. Lepage, C. Jayyosi, P. Lecomte-Grosbras, M. Brieu, C. Duriez, M. Cosson, C. Rubod, Biomechanica pregnant pelvic system model and numerical simulation of childbirth : impact of delivery on the uterosacral ligaments, preliminary results, Int. Urogynecology J. (Imp. Factor: 1.94), Vol. 26, Is. 4, p. 297-504, 2015.
  21. J. Berthe, M. Brieu, E. Delteombe, Thermo-viscoelastic modelling of organic matric composites behavior – Application to T700GC/M21, Mech. Mat. (Imp. Factor: 2.65), Vol. 81, p. 18-24, 2015.
  22. P. Lecomte-Grosbras, J. Rethore, N. Limodin, JF. Witz, M. Brieu, Three-Dimensional investigation of free-edge effects in laminate composites using X-Ray tomography and digital volume correlation, Exp. Mech. (Imp. Factor: 2.09), Vol. 55, Is. 1, p. 301-311, 2015.



H.D.R. Physics 2005, University of Lille

Required in France to supervise research and become Full Professor, thesis:  "Contribution to the study of the behavior of rubber-like materials "

PhD. Mechanical Engineering 1999, Ecole Normale Supérieure Paris-Saclay

thesis:  "Computation of the Homogenized behavior and modeling of damage of hyperleastic composites materials using parallel computing techniques", with honors

MA.. Mechanical Engineering 1996, University Patis-Sorbonne, Paris VI

BA.. Applied Mathematics 1993, University Patis-Sorbonne, Paris VI