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Unformatted text preview: = 0.284 lb/in3
c = .10 BTU/lb-°F Geometric Properties
a = 1.0 in
b = 3.0 in
h = .20 in Loading
Tb = 500°F
To = 70°F Analysis Assumptions and Modeling Notes
Due to symmetry, only a wedge of arbitrary height is required for modeling. A 5° wedge is selected to minimize
curved geometry effects when using a lower order element. The thermal steady state condition is satisfied when
the inner and outer wall temperature difference is constant. A transient thermal-stress analysis is required with
a sufficient time period to allow the steady-state condition to be obtained. A time period of t = 430 sec is selected.
The temperature Tf is assigned a value of T = 500°F such that, for a ramped load condition, the constant temperature rise of: Tf-To/∆t = 500-70/430 = 1°F/sec is obtained. Since the structural dynamic effects are not of concern,
inertial and damping structural effects can be ignored, by specifying time integration for the temperature degree
of freedom only. A sufficient number...
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This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.
- Spring '09
- The Land