Multi-Scale Dynamic Failure Modeling of Heterogeneous Materials
Abstract
In this project new numerical techniques are proposed for modeling 3D multi-scale dynamic failure problems in heterogeneous materials. Polycrystalline and composite materials 3D microstructures will be analyzed considering their heterogeneities and anisotropy of the elastic material properties. Dynamic displacement fields at the meso-scale will be evaluated in an atomistic and molecular scales to generate a cohesive law that will characterize the failure location and propagation. The direct homogenization method that is based on the volume average of field quantities of stresses and strains will be applied to evaluate the effective elastic properties of composite materials. Acceleration methods, as the Adaptive Cross Approximation (ACA), will be applied to accelerate the numerical solution in order to deal with the large number of degrees of freedom in composite structures. New techniques for generally anisotropic media will be implemented and tested for more accurate results.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 09, 2018
- Source ID
- FA95501810113
Entities
People
- P. Sollero
Organizations
- Air Force Office of Scientific Research
- United States Air Force