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Cyclic uniaxial and biaxial hardening of type 304 stainless steel modeled by the viscoplasticity theory based on overstress
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Yao, David Krempl, Erhard |
| Copyright Year | 1988 |
| Description | The isotropic theory of viscoplasticity based on overstress does not use a yield surface or a loading and unloading criterion. The inelastic strain rate depends on overstress, the difference between the stress and the equilibrium stress, and is assumed to be rate dependent. Special attention is paid to the modeling of elastic regions. For the modeling of cyclic hardening, such as observed in annealed Type 304 stainless steel, and additional growth law for a scalar quantity which represents the rate independent asymptotic value of the equilibrium stress is added. It is made to increase with inelastic deformation using a new scalar measure which differentiates between nonproportional and proportional loading. The theory is applied to correlate uniaxial data under two step amplitude loading including the effect of further hardening at the high amplitude and proportional and nonproportional cyclic loadings. Results are compared with corresponding experiments. |
| File Size | 299687 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880012130 |
| Archival Resource Key | ark:/13960/t5p895p9x |
| Language | English |
| Publisher Date | 1988-04-01 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Isotropic Media Stress Analysis Work Hardening Elastoplasticity Cyclic Loads Viscoplasticity Axial Loads Inelastic Stress Elastic Deformation Stainless Steels Strain Rate Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
