Alleviation of Stress Concentration with Analogue Reinforcement,
Abstract
In order to reduce the stress concentration around a hole in a plate, new, analogue reinforcements instead of reinforcing rings were used in this investigation. In two of these specimens, reinforcements with different volume fractions were arranged to coincide with the stress trajectories for an infinite plate with a hole under uniaxial tension. Two other specimens contained straight rectangular-grid type reinforcements with different volume fractions. These 0.005 in. thick brass reinforcements were made by using a photofabrication method. Specimens were then prepared by sandwiching these reinforcemnts between two epoxy resin plates. The stress concentrations at the edge of the hole under uniaxial tension were determined by photoeleastic techniques. The measured stress concentration factors were compared with well known values for an infinite, isotropic, homogeneous plate containing a hole. A definite reduction in stress concentration was observed on specimens containing 'analogue' reinforcement. (Author, modified-PL)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1972
- Accession Number
- AD0745116
Entities
People
- Robert A. Heller
- Toshiaki Chiba
Organizations
- Virginia Tech