% Compute stress tensor using neo-Hookean model function stress = neo_hookean(F, mu) I1 = trace(F'*F); W = (mu/2) \* (I1 - 3); stress = mu \* F \* F'; end
% Compute stress tensor using Mooney-Rivlin model function stress = mooney_rivlin(F, C10, C01) I1 = trace(F'*F); I2 = 0.5 \* (I1^2 - trace(F'*F*F'*F)); W = C10 \* (I1 - 3) + C01 \* (I2 - 3); stress = 2 \* (C10 \* F \* F' + C01 \* F' \* F); end
Nonlinear solid mechanics is a branch of mechanics that deals with the behavior of solids under large deformations and nonlinear material responses. The field has gained significant attention in recent years due to its applications in various areas, including biomechanics, materials science, and engineering. One of the most widely used textbooks in this field is "Nonlinear Solid Mechanics: A Continuum Approach for Engineering" by Gerhard A. Holzapfel.