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Nonisothermal elasto-visco-plastic response of shell-type structures
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Carlson, R. L. Simitses, G. J. Riff, R. |
| Copyright Year | 1987 |
| Description | A mathematical model and solution methodologies for analyzing structural response of thin, metallic shell-type structures under large transient, cyclic or static thermomechanical loads is disussed. Among the system responses, which are associated with these load conditions, are thermal buckling and creep buckling. Thus, geometric as well as material-type nonlinearities (of high order) can be anticipated and have been considered in the development of the mathematical model. Furthermore, this was accommodated in the solution procedures. A complete true ab-inito rate theory of kinematics and kinetics for continuum and curved thin structures, without any restriction on the magnitude of the strains or the deformation, was formulated. The time dependence and large strain behavior are incorporated through the introduction of the time rates of the metric and curvature in two coordinate systems, a fixed (spatial) one and a convected (material) coordinate system. The relations between the time derivative and the covariant derivatives (gradients) have been developed for curved space and motion, so that the velocity components supply the connection between the equations of motion and the time rate of change of the metric and curvature tensors. |
| File Size | 194085 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870013363 |
| Archival Resource Key | ark:/13960/t9h46mn0j |
| Language | English |
| Publisher Date | 1987-01-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Dynamic Structural Analysis Temperature Dependence Creep Buckling Gas Turbine Engines Coordinates Equations of Motion Finite Element Method Time Dependence Tensors Elastoplasticity Thin Walled Shells Viscoplasticity Metal Shells Kinematics Mathematical Models Thermal Buckling Kinetics Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
