Effects of Material Behavior on the Response of Rapidly Heated Structures
Abstract
An investigation into the theoretical requirements for short time elevated temperature material property data to be used in a structural analysis to predict the response and failure of structures subject to the combined effects of mechanical and thermal loads due to rapid heating was undertaken. An assessment of the ability of the MARC and ANSYS finite-element computer codes to perform the required analysis was made. An evaluation of the suitability of existing mechanical material property data for 6061-T6 aluminum was made in light of the theoretical requirements. Uniaxial simulation experiments were performed in which load and temperature were varied as a function of time in order to simulate the loading and unloading behavior that occurs in locally heated structures. Basic uniaxial material property tests were conducted. These data were used to obtain time independent ('zero' time) temperature dependent elastic-plastic stress/strain curves and time dependent creep curves. A one- dimensional direct integration code 'CREEPARHS' was written to perform the required analysis and to check the results from the finite elements codes. Analysis using the newly generated material property data and currently available 10 second isochronous and handbook data was performed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1980
- Accession Number
- ADA082148
Entities
People
- S. F. Stone