Constitutive Modeling of Particular Media-Structure Interfaces
Abstract
The interaction of soil and structure is a problem that has challenged designers for centuries. Empirical relationships have been used to estimate the shear resistance between various materials and soil however this approach is limited to generic soils and interface materials, in addition these empirical relationships do not predict the deformation behavior at these interfaces. Proper characterization of interface behavior depends on the formulation of accurate constitutive relationships of interfaces. To build accurate constitutive relationships, measurements are required from a variety of interfaces or an accurate model is required which can accurately predict interface behavior. We have employed several tools to understand the interaction relationships including: laboratory testing, discrete element modeling, and theoretical modeling. From these tools we have determined that interface zones are characterized by local slip occurring over a fairly narrow zone. The thickness of the zone is related to the size and shape of the particles, the roughness of the structural material, the normal stress, and rate of shear. Other related factors are the original relative density of the soil and the toughness of the soil particles. These later two factors also influence the grain lateral and rotational displacements and the amount of particle damage or degradation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 14, 2000
- Accession Number
- ADA382785
Entities
People
- M. E. Plesha
- P. J. Boscher
- T. B. Edil
Organizations
- University of Wisconsin–Madison