Estimation of vascular open configuration using finite element inverse elastostatic method

This paper presents a new method for predicting the open configuration of vascular organs. The method utilizes finite element inverse elastostatic formulations. The equilibrium boundary value problem is formulated on the homeostatic configuration, and is solved inversely to find the open, stress-free configuration. The method is non-invasive, and enables us to estimate the open configuration based on information that is readily available form in vivo measurements. Examples involving both axisymmetric and asymmetric geometries are presented to demonstrate the utility of the method.

[1]  D. Vorp,et al.  Biomechanics of abdominal aortic aneurysm. , 2007, Journal of biomechanics.

[2]  T. Olsson,et al.  Modeling initial strain distribution in soft tissues with application to arteries , 2006, Biomechanics and modeling in mechanobiology.

[3]  J. C. Criscione,et al.  Complex distributions of residual stress and strain in the mouse left ventricle: experimental and theoretical models , 2003, Biomechanics and modeling in mechanobiology.

[4]  S. Timoshenko,et al.  THEORY OF PLATES AND SHELLS , 1959 .

[5]  L A Taber,et al.  Theoretical study of stress-modulated growth in the aorta. , 1996, Journal of theoretical biology.

[6]  D. Vorp,et al.  The effects of aneurysm on the biaxial mechanical behavior of human abdominal aorta. , 2006, Journal of biomechanics.

[7]  Savio Lau-Yuen Woo,et al.  Frontiers in Biomechanics , 1986, Springer New York.

[8]  S. BRODETSKY,et al.  Theory of Plates and Shells , 1941, Nature.

[9]  S. Govindjee,et al.  Computational methods for inverse finite elastostatics , 1996 .

[10]  A Rachev,et al.  Experimental investigation of the distribution of residual strains in the artery wall. , 1997, Journal of biomechanical engineering.

[11]  Y. Fung,et al.  Biomechanics: Mechanical Properties of Living Tissues , 1981 .

[12]  Residual strain in the gastrointestinal tract: a new concept , 2000, Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society.

[13]  R. Budwig,et al.  The influence of shape on the stresses in model abdominal aortic aneurysms. , 1996, Journal of biomechanical engineering.

[14]  A Rachev,et al.  Residual strains in conduit arteries. , 2003, Journal of biomechanics.

[15]  J. C. Simo,et al.  On a stress resultant geometrically exact shell model , 1990 .

[16]  Y. C. Fung,et al.  What are the residual stresses doing in our blood vessels? , 2006, Annals of Biomedical Engineering.

[17]  Y C Fung,et al.  On residual stresses in arteries. , 1986, Journal of biomechanical engineering.

[18]  Y C Fung,et al.  Residual strain in rat left ventricle. , 1990, Circulation research.

[19]  S. Govindjee,et al.  Computational methods for inverse de-formations in quasi-incompressible nite elasticity , 1998 .

[20]  A. Klarbring,et al.  Towards in vivo aorta material identification and stress estimation , 2004, Biomechanics and modeling in mechanobiology.

[21]  A D McCulloch,et al.  Left ventricular geometric remodeling and residual stress in the rat heart. , 1998, Journal of biomechanical engineering.

[22]  M L Raghavan,et al.  Toward a biomechanical tool to evaluate rupture potential of abdominal aortic aneurysm: identification of a finite strain constitutive model and evaluation of its applicability. , 2000, Journal of biomechanics.

[23]  Y. Fung,et al.  Residual Stress in Arteries , 1986 .

[24]  M. L. Raghavan,et al.  Inverse elastostatic stress analysis in pre-deformed biological structures: Demonstration using abdominal aortic aneurysms. , 2007, Journal of biomechanics.

[25]  R. N. Vaishnav,et al.  ESTIMATION OF RESIDUAL STRAINS IN AORTIC SEGMENTS , 1983 .

[26]  R. N. Vaishnav,et al.  Residual stress and strain in aortic segments. , 1987, Journal of biomechanics.

[27]  Anne Hoger,et al.  A new method for predicting the opening angle for soft tissues. , 2002, Journal of biomechanical engineering.

[28]  M. L. Raghavan,et al.  Computational method of inverse elastostatics for anisotropic hyperelastic solids , 2007 .

[29]  Jia Lu,et al.  Inverse formulation for geometrically exact stress resultant shells , 2008 .

[30]  J. C. Simo,et al.  On a stress resultant geometrically exact shell model. Part III: computational aspects of the nonlinear theory , 1990 .

[31]  Y C Fung,et al.  The zero-stress state of rat veins and vena cava. , 1991, Journal of biomechanical engineering.

[32]  Wojciech Pietraszkiewicz,et al.  Theory and numerical analysis of shells undergoing large elastic strains , 1992 .

[33]  S. Cowin,et al.  Biomechanics: Mechanical Properties of Living Tissues, 2nd ed. , 1994 .

[34]  J. Humphrey Cardiovascular solid mechanics , 2002 .