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A general reversible hereditary constitutive model. part 1; theoretical developments
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Saleeb, A. F. Arnold, S. M. |
| Copyright Year | 1997 |
| Description | Using an internal-variable formalism as a starting point, we describe the viscoelastic extension of a previously-developed viscoplasticity formulation of the complete potential structure type. It is mainly motivated by experimental evidence for the presence of rate/time effects in the so-called quasilinear, reversible, material response range. Several possible generalizations are described, in the general format of hereditary-integral representations for non-equilibrium, stress-type, state variables, both for isotropic as well as anisotropic materials. In particular, thorough discussions are given on the important issues of thermodynamic admissibility requirements for such general descriptions, resulting in a set of explicit mathematical constraints on the associated kernel (relaxation and creep compliance) functions. In addition, a number of explicit, integrated forms are derived, under stress and strain control to facilitate the parametric and qualitative response characteristic studies reported here, as well as to help identify critical factors in the actual experimental characterizations from test data that will be reported in Part II. |
| File Size | 1952445 |
| Page Count | 42 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980017418 |
| Archival Resource Key | ark:/13960/t3rv5gx4s |
| Language | English |
| Publisher Date | 1997-12-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Viscoelasticity Thermodynamics Isotropy Time Dependence Creep Properties Stress-strain Relationships Kernel Functions Anisotropy Viscoplasticity Mechanical Properties Mathematical Models Formalism Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
