Effect of heating rate on the stress-strain state in a cylindrical shell with a stiffener ring
The effect of the heating rate on the stress-strain state of chemical production systems during start-up was examined in a quasistatic formulation of the thermoelasticity problem. The temperature fields were determined for a thin-walled shell with a stiffener ring by solving the nonstationary problem of heat conductivity. The calculations incorporate heat balance equations using the thermal conductivity and specific heat of the shell and ring materials. Thermoelastic stresses were determined for the calculated temperature field as a function of time. Results show that the heating rate has a strong effect on the stress-strain state of the thin-wall structures in the zone of the edge effect and that a linear increase in heating rate increases thermal stresses almost proportionally. The method was designed for optimizing the time required for startup and shutdown of chemical plant equipment and maximizing plant efficiency.
- OSTI ID:
- 6412076
- Journal Information:
- Chem. Pet. Eng. (Engl. Transl.); (United States), Vol. 23:9-10; Other Information: Translated from Khimicheskoe Neftyanoe Mashinostroenie; 23: No. 9, 4-6(Sep 1987)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
CHEMICAL PLANTS
EFFICIENCY
CHEMICAL REACTORS
STRESS ANALYSIS
SHELLS
THERMAL STRESSES
HEAT TRANSFER
HEATING
MATHEMATICAL MODELS
RELIABILITY
RINGS
SHUTDOWNS
START-UP
STRAINS
TEMPERATURE EFFECTS
THERMAL CONDUCTIVITY
THERMAL CYCLING
THERMOELASTICITY
ELASTICITY
ENERGY TRANSFER
INDUSTRIAL PLANTS
MECHANICAL PROPERTIES
PHYSICAL PROPERTIES
STRESSES
TENSILE PROPERTIES
THERMODYNAMIC PROPERTIES
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
360103 - Metals & Alloys- Mechanical Properties