Analytical-Experimental Correlation of the Biaxial State of Stress in Composite Laminates (T-300/5208).
Abstract
The observed strength and stress-strain response of (0 sub 2/plus or minus 45) sub s T-300 fibers in 5208 epoxy laminates under varying biaxial stress ratios are compared with those predicted numerically. The four prediction techniques employed are those by Sandhu, Tsai-Wu, Petit-Waddoups and Hill. While all four theories were employed to predict laminate strength, numerical flow curves were generated only by the first three analyses. Actual experimental and numerically predicted results are compared for the following stress ratios; sigma sub x:sigma sub y: tau sub xy = 1:0:0; 3:1:1.732; 1:1:1; 5:1:2.236 and 0:1:0. Both flat and circular ring off-axis laminate specimens were employed by which to generate experimentally the biaxial data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1975
- Accession Number
- ADA010423
Entities
People
- Robert E. Rowlands
Organizations
- IIT Research Institute