Recently i work on finite element model of a human vertebral body, and focus on intervertebral disc.
Based on its structure which consist of collagen fibers i have to use anisotropic hyperelastic model with reinforced fiber, and i derived the coefficients of strain energy function.
but i have some troubles to modeling this material in ansys v.10 or v.12, because i have to use user material subroutine and i have not enough information about how to define material with macro in ansys
please can someone help me with this routine, i read the help but i dont understand anything. thanks!!