Computer Program for Analysis of Stress-Strain Data, Revised
Abstract
A computer program, previously developed for fitting analytic curves to experimental stress-strain data and described in AMMRC TR 76-12 and its Supplement, has been revised. The program determines the three parameters required for the Ramberg-Osgood equation and two additional constants for a power law approximation for data beyond the Ramberg-Osgood secant yield stress. The revisions include a routine to arrange the input data in increasing order of stress-strain magnitude; a new method for tangent modulus calculation; a data extrapolation routine for the case where the last input data point is a small increment below the secant yield stress; additional statistical calculations to indicate goodness-of-fit of the data; and output values expressed in S-I metric units as well as customary English units. A number of nonessential analyses and their associated outputs have been eliminated. User instructions, samples of the output, and a program listing are included. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1977
- Accession Number
- ADA042322
Entities
People
- Ralph Papirno
Organizations
- United States Army Research Laboratory