Stress Displacement at Elevated Temperatures

[LennieBriese]

I was doing a FEA Stress Analysis of an Alum (6063 T6) part and set the Ultimate and Yield Strength of the material lower to model the behavior at 150 degress C. The displacement (movement) of the model was exactly the same for relatively small forces. The force was 110 N and the Ultimate Tensile Strength was 214 MPa @ 24 degrees C and 145 MPa @ 149 degrees C.

Would the small force displacement be the same even though the Ultimate and Yield Strengths were 35% to 40% lower?

 

[edgepflow]

I think you need to change the modulus of elasticity for the higher temperature to get a different deflection.