Cardiovascular system and artificial replacements
Research on tissues and body structures and biomaterials
Mullins effect within cyclic loading of blood vessel walls
Project description:
Idealized Mullins effect - cyclic stress softening - primary response first-time attained strain states (red curve) vs. softened stress within unloading/reloading
The Mullins effect – True data record with abdominal aortic specimen – unloading does not match with reloading
Blood vessel walls exhibit significant stress softening within an unloading. The following loading depends on the previous maximum value of deformation. Such stress softening have been called the Mullins effect due to Leonard Mullins and his extensive research of this phenomenon observed upon cyclic loading and unloading of elastomers. The main aim of this project is to develop mathematical description which will incorporate structurally-based concepts of blood vessel wall deformation.
doc. Ing. Lukáš Horný Ph.D. ; Hynek ChlupResesrchers:
Department of Forensic Medicine 3rd Faculty of Medicine CU, Institute of Thermomechanics AS CR, vvi
Cooperation:
Literature:
- Gultova, E., Horny, L., Chlup, H., & Zitny, R. (2011). A comparison between the exponential and limiting fiber extensibility pseudo-elastic model for the mullins effect in arterial tissue. Journal of Theoretical and Applied Mechanics, 49(4), 1203-1216.
- Gultova, E., Horny, L., Chlup, H., & Zitny, R. (2011). An anisotropic pseudo-elastic model for the mullins effect in arterial tissue. Paper presented at the Computational Plasticity XI - Fundamentals and Applications, COMPLAS XI, 713-719.
- L. Horny, E. Gultova, H. Chlup, R. Sedlacek, J. Kronek, J. Vesely and R. Zitny (2010) Mullins effect in human aorta described with limiting extensibility evolution. IFMBE Proceedings, vol. 29, p. 768-771
- L. Horny, E. Gultova, H. Chlup, R. Sedlacek, J. Kronek, J. Vesely and R. Zitny (2010) The Mullins effect in aorta and limiting extensibility evolution. Bulletin of Applied Mechanics, vol. 6, no. 21, p. 1-5