Spannraft L, Steinmann P, Mergheim J (2023)
Publication Type: Journal article
Publication year: 2023
Book Volume: 174
Article Number: 105255
DOI: 10.1016/j.jmps.2023.105255
This contribution presents a generalized mechanical interface model for nonlinear kinematics. The interface's response is non-coherent, i.e. allows for a jump in the deformations and for cohesive failure, and also includes interfacial (in)elasticity, which means that an additional membrane stiffness is introduced in the interface. This can result in a jump in the tractions across the interface and induces membrane stresses for in-plane stretches. An anisotropic cohesive law, i.e. dependent on the spatial interface normal, is formulated which induces for nonlinear kinematics additional shear-like stresses within the interface to satisfy the balance of angular momentum. The cohesive and membrane degradations are coupled via damage variables of the different deformation modes to account for an interaction. It is shown that the model is thermodynamically consistent, fulfills the balance equations and material frame indifference. An interface element with the generalized interface model is implemented as a user element in ABAQUS. Numerical examples illustrate the influence of damage coupling on the mechanical response of adhesive layers.
APA:
Spannraft, L., Steinmann, P., & Mergheim, J. (2023). A generalized anisotropic damage interface model for finite strains. Journal of the Mechanics and Physics of Solids, 174. https://doi.org/10.1016/j.jmps.2023.105255
MLA:
Spannraft, Lucie, Paul Steinmann, and Julia Mergheim. "A generalized anisotropic damage interface model for finite strains." Journal of the Mechanics and Physics of Solids 174 (2023).
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