Heterogeneous Adhesives

Project title: Multiscale cohesive modeling of failure in heterogeneous adhesives

Participants: Mohan Kulkarni (PhD - Currently at Exxon Research), Prof. Karel Matous (U. Notre Dame), prof. Scott White (U. Illinois) and Prof. Philippe Geubelle

Support: National Science Foundation (CMMI)

project description: In this project, we develop and implement a multiscale cohesive finite element framework to extract the cohesive failure properties of heterogeneous adhesives such as rubber-toughened epoxy, self-healing adhesives and other multi-functional adhesives. Unlike “classical” cohesive models which are chosen for mathematical convenience, this framework allows to relate in a mathematically consistent way the failure processes taking place at the micro-scale to the macroscopic cohesive failure response of the adhesive system. WE ALSO DEVELOP A FULLY TWO-WAY COUPLED IMPLEMENTATION OF THE MULTISCALE COHESIVE SCHEME, ALLOWING FOR THE SIMULTANEOUS SOLUTION OF THE NONLINEAR EQUATIONS DESCRIBING THE EQUILIBRIUM AT THE MACRO- AND MICRO-SCALES.

Additional information: For more information about this project, see this document.

related publications:

1. • Matous, K., Kulkarni, M. G. and Geubelle, P. H. (2008) “Multiscale cohesive failure modeling of heterogeneous adhesives”. J. Mech. Phys. Solids, 56:4, 1511-1533. DOI: 10.1016/j.jmps.2007.08.005.
   

2. • Kulkarni, M., Geubelle, P. H. and Matous, K. (2009) “Multi-scale modeling of heterogeneous adhesives: Effect of particle decohesion”. Mech. Mater., 41, 573-583. DOI:10.1016/j.mechmat.2008.10.012.
   

3. • Kulkarni, M. G., Matous, K. and Geubelle, P. H. (2010) “Coupled multi-scale cohesive modeling in heterogeneous adhesives.”  To appear in International Journal for Numerical Methods in Engineering.