Loading...
Please wait, while we are loading the content...
Similar Documents
Unified constitutive material models for nonlinear finite-element structural analysis. [gas turbine engine blades and vanes]
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kaufman, A. Laflen, J. H. Lindholm, U. S. |
| Copyright Year | 1985 |
| Description | Unified constitutive material models were developed for structural analyses of aircraft gas turbine engine components with particular application to isotropic materials used for high-pressure stage turbine blades and vanes. Forms or combinations of models independently proposed by Bodner and Walker were considered. These theories combine time-dependent and time-independent aspects of inelasticity into a continuous spectrum of behavior. This is in sharp contrast to previous classical approaches that partition inelastic strain into uncoupled plastic and creep components. Predicted stress-strain responses from these models were evaluated against monotonic and cyclic test results for uniaxial specimens of two cast nickel-base alloys, B1900+Hf and Rene' 80. Previously obtained tension-torsion test results for Hastelloy X alloy were used to evaluate multiaxial stress-strain cycle predictions. The unified models, as well as appropriate algorithms for integrating the constitutive equations, were implemented in finite-element computer codes. |
| File Size | 6385652 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850016027 |
| Archival Resource Key | ark:/13960/t3712z01z |
| Language | English |
| Publisher Date | 1985-07-10 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Finite Element Method Isotropic Media Turbine Blades Nickel Alloys Nonlinearity Inelastic Stress Mathematical Models Constitutive Equations Stress-strain Diagrams Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
