Stress Displacement at Elevated Temperatures

In summary, stress displacement at elevated temperatures is a phenomenon where materials undergo changes in size and shape when exposed to high temperatures, leading to stress and strain that can affect their mechanical properties. This is important to consider in industries such as aerospace, power generation, and manufacturing. The effects of stress displacement can vary depending on the material, but it can be controlled through proper material selection and understanding its behavior at high temperatures. Various techniques and methods, such as thermal analysis and mechanical testing, are used to study and measure stress displacement at elevated temperatures.
  • #1
LennieBriese
1
0
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?
 
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  • #2
I think you need to change the modulus of elasticity for the higher temperature to get a different deflection.
 

Related to Stress Displacement at Elevated Temperatures

1. What is stress displacement at elevated temperatures?

Stress displacement at elevated temperatures is a phenomenon in which materials experience changes in their dimensions and shape when subjected to high temperatures. This can cause stress and strain in the material, which can affect its mechanical properties.

2. Why is stress displacement at elevated temperatures important?

Stress displacement at elevated temperatures is important because it can have significant effects on the performance and reliability of materials in high-temperature environments. It is a crucial factor to consider in industries such as aerospace, power generation, and manufacturing.

3. How does stress displacement at elevated temperatures affect different materials?

The effects of stress displacement at elevated temperatures can vary depending on the type of material. Metals, for example, may experience creep, which is a gradual deformation under constant load. Ceramics, on the other hand, may experience thermal stress cracking due to uneven thermal expansion. Polymers may soften and lose their structural integrity under high temperatures.

4. Can stress displacement at elevated temperatures be prevented or controlled?

While stress displacement at elevated temperatures cannot be completely eliminated, it can be controlled and minimized through proper material selection, design, and operating conditions. Understanding the behavior of materials at high temperatures is crucial in preventing failure and ensuring the longevity of structures and components.

5. How is stress displacement at elevated temperatures studied and measured?

There are various techniques and methods used to study and measure stress displacement at elevated temperatures, such as thermal analysis, mechanical testing, and finite element analysis. These methods allow scientists and engineers to analyze the behavior of materials under different temperature and loading conditions and predict their performance in real-world applications.

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