Fully restrained elastic screen
Restrained thermal stress
Inputs
User-entered linear-elastic modulus for the stated material condition.
User-entered average CTE over the stated temperature interval.
Final minus initial temperature. Positive = heating.
Results
Ideal restrained thermal stressσth
156
Suppressed free thermal strainεth
780
Stress magnitudeσ
156
σth = EαΔT
A first-pass number, not a code check, certification, or approval. Read the method and its limits below. What this is and is not.
Nearby: Free thermal expansion
Method
Formula, when it applies, and when it does not
Estimate ideal elastic stress from modulus, linear expansion coefficient, and uniform temperature change under complete restraint.
σth = EαΔT
When
- Full axial restraint
- Linear elasticity
- Uniform temperature
- User-entered properties
Don’t
- This represents a uniform, fully restrained, linear-elastic axial member. It is not an allowable-stress, strength, fatigue, support-stiffness, thermal-gradient, creep, joint, or code-compliance calculation.