An Experimental and Modeling Study of the Viscoelastic Behavior of Collagen Gel

摘要: The macroscopic viscoelastic behavior of collagen gel was studied through relaxation time distribution spectrum obtained from stress tests and constitutive modeling. Biaxial were performed to characterize the crosslinked with Genipin solution. Relaxation data by inverse Laplace transform. Peaks at short (0.3 s-1 s), medium (3 s-90 long (>200 s) observed in continuous spectrum, which likely correspond mechanisms involve fiber, inter-fibril, fibril sliding. intensity long-term peaks increases higher initial levels indicating engagement fibrils tissue strain. We have shown that can be well simulated using a model viscous material parameters directly spectrum. Results current study suggest is useful connecting macro-level matrices micro-level structure changes.