AN INCREMENTAL FORM OF THE SINGLE-INTEGRAL NONLINEAR VISCOELASTIC THEORY FOR ELASTIC-PLASTIC-CREEP FINITE ELEMENT ANALYSIS
A single-integral nonlinear viscoelastic theory is cast into a generalized incremental form for use in predicting creep response of materials. The incremental creep constitutive model is tailored for use in an incremental finite element program wherein the equations of motion are integrated numerically step-by-step. Recursive relations for material memory parameters are developed which allow the retention of all past history prior to the current time step and require integration over the current time step only. The creep model parameters required in the theory are obtainable from a standard creep and recovery test. The incorporation of the model within an incremental elastic-plastic finite element formulation is outlined.
Texas A&M University, College StationDepartment of Aerospace Engineering
College Station, TX United States 77843
Office of Naval ResearchDepartment of the Navy, 800 North Quincy Street
Arlington, VA United States 22217
- Sanders, D R
- Haisler, W E
- Publication Date: 1979-3
- Features: References;
- Pagination: 12 p.
- TRT Terms: Computer programs; Creep; Elastoplasticity; Finite element method; Repeated loads; Structural analysis; Thermal stresses; Viscoelasticity
- Uncontrolled Terms: Structural response
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00197159
- Record Type: Publication
- Report/Paper Numbers: 3275-79-1 Tech Rpt.
- Contract Numbers: N00014-76-C-0150
- Files: TRIS
- Created Date: Aug 28 1979 12:00AM