MULTIAXIAL FAILURE OF VISCOELASTIC MATERIALS
Abstract
This report contains theoretical and experimental studies related to the failure phenomena in polymeric materials. A new engineering failure theory is developed and described. This theory takes into consideration general, miltiaxial viscoelastic loading conditions. The theory can be used to predict failure under multiaxial stress conditions if the uniaxial viscoelastic failure envelope is known. A viscoelastic stress analysis of the poker-chip specimen is presented. This analysis is needed in order to evaluate the failure data from the triaxial poker-chip test. In the experimental failure studies the Solithane 113 polymer material is being used. The manufacturing process is described in detail. Two types of tests are described; the uniaxial and the triaxial. The uniaxial test is conducted at various constant strain rates and temperatures. The purpose of this test is first to produce data for the viscoelastic characterization of the Solithane 113 material and secondly, to produce uniaxial failure data. The triaxial test uses the poker-chip specimen and its purpose is to generate failure data under triaxial stress conditions. These tests are also conducted at various strain rates and temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1964
- Accession Number
- AD0608447
Entities
People
- A. R. Zak
Organizations
- California Institute of Technology