Mathematical Modeling of the Biaxial Stress - Strain Behavior of Fabrics
Abstract
The development and increased use of computational structural design programs for fabric structures such as tents demands a description of the fabric stress-strain behavior in a form suitable for use on the computer. Here some work is described on the development of mathematical models to fill that need. The technique used is nonlinear least squares fitting of experimental data to chosen functions which treat the biaxial strain as the dependent variables and the biaxial stresses as the independent variables. The experimental results used are from biaxial stress tests in which the ratio of the stresses in the two orthogonal directions is maintained as a constant. Five sets of data, in each of which this constant has a different value, are used in the least squares problem. The results show a satisfactory fitting of the data from one fabric with stress-strain behavior that is typical of fabrics used in tentage. These results were obtained with three different power law functions of varying complexity. The most suitable of these functions depends on the particular use to be made of the results.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1982
- Accession Number
- ADA115058
Entities
People
- Earl C. Steeves
Organizations
- United States Army Soldier Systems Center