Friction Phenomenon in Contact Stress Problems
Abstract
Numerical, experimental, and hybrid combinations of these methods, were used to study plane contact problems. The experimental program used moire interferometry to determine in-plane displacement fields near the contact boundaries of pin-loaded aluminum and graphite-epoxy plates. The experiments closely modeled two dimensional behavior and introduced zero-thickness gratings (for the aluminum plate). The experimental data were reduced by means of a localized hybrid analysis which used the experimental displacement data as input to a finite element analysis of selected zones of interest. The stress distributions obtained were generally consistent with those of published analytical and experimental studies but the detailed frictional phenomena were found to be very localized and somewhat irregular. The composite plate program featured a failure analysis based upon the experimentally determined stress distributions. These distributions were combined with a maximum stress failure criterion to predict the mode and location of the failure. The results of an earlier experiment were used to assess the accuracy of a general finite element algorithm for plane elastic problems. On the basis of this comparison refinements to the solution methodology were made. Keywords: Matrix cracking, Composite plates, Aluminum, Contact, Moire interferometry, Fringe patterns, Hybrid techniques elasto-plastic analysis, Eulerian-Lagrangian formulation, Finite element analysis.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1988
- Accession Number
- ADA200806
Entities
People
- D. Post
- J.n. Reddy
Organizations
- Virginia Tech