|
| << vorige |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 10 van 10 gevonden artikelen
| Titel: |
TRANSIENT THERMAL STRESSES IN A CHEMICALLY HARDENING MATERIAL CAST WITHIN AN ELASTIC CYLINDRICAL MOLD |
| Auteur: |
Levitsky, Myron Shaffer, Bernard W. |
| Verschenen in: |
Journal of thermal stresses |
| Paginering: | Jaargang 1 (1978) nr. 2 pagina's 223-238 |
| Jaar: |
1978-10-01 |
| Inhoud: |
A method is formulated for determining the transient thermal stresses that evolve during the molding process within a material hardening as the result of an exothermic chemical reaction. The formulation is applied to the restricted case in which the shear-to-bulk-modulus ratio for the fully hardened material is small, and where the material is cast in the form of an infinitely long solid cylinder in a thermally thin elastic mold. The heat-generation rate and temperature variation are derived from a first-order chemical reaction. The solidification of the material is described by a transformation from an initial liquidlike state to an elastic solid, with thermoelastic constitutive rate equations during the hardening process based upon a two-component mixture model whose composition is related to the degree of reaction. Graphs for transient stresses and residual stress distributions are shown in terms of dimensionless variables, with hardening rate related to thermochemical constants, and with the elastic properties of the poured material and mold as parameters. Illustrative examples are analyzed to show the existence of tensile stresses that may be associated with cracking during the molding process, and containment stresses in the mold arising from thermal expansion of the hardening material. Material properties are listed to form numerical estimates of the dimensionless variables. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 10 gevonden artikelen
| << vorige |