COMPUTER PROGRAM FOR ANALYSIS OF STRESS-STRAIN DATA, REVISED

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.

• Corporate Authors:

  Army Materials and Mechanics Research Center

  Watertown, MA  United States  02172
• Authors:
  • Papirno, R
• Publication Date: 1977-4

Media Info

• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Computer programs; Deformation curve; Stresses; Structural analysis
• Old TRIS Terms: Computer programs (Stress strain)
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00163212
• Record Type: Publication
• Source Agency: U.S. Army Material Dev. & Readiness Command
• Report/Paper Numbers: AMMRC TR 77-11 Final Rpt.
• Files: TRIS
• Created Date: Oct 13 1977 12:00AM