Learning Forum

[azarandi]

I am running a structural simulation and one of the materials is Indium. As I check its mechanical properties, I found that its yield strength is higher than tensile strength. Can anyone explain why?

Thanks

[Sean Harvey]

Hello Azarandi,

Here is what I see from inside Mechanical. Yield = 2MPa, Ultimate = 3.354 MPa.  WHere are you seeing tensile strength lower than 2MPa?

Thanks,
Sean

[azarandi]

Hi Sean,

As I showed in the table for Young's modulus, the Yield strength is higher than tensile strength. Is it right to say "due to the fact that little strain is needed to deform indium, it results in the very small elastic range with a proportionally steep slope?"

[Sean Harvey]

Hello Azarandi,

Just to clarify in column B that is Young's Modulus, not Tensile Strength, so it is the slope. Maybe you meant Tensile Modulus in your statement? But yes.  The strain to reach yield is tiny. 2.72E-04   So the elastic range is very very small.  

 

Hope this helps

[azarandi]

Sean,

Please check Figure 10 of the attached article. Is this right?

https://www.osti.gov/servlets/purl/984735

[Sean Harvey]

Hello Azarandi,

I am not certain why you mean by right, but If you are comparing the material data from Ansys and material data from the paper, they will indeed differ. For one. these tests in the paper have values as stated that yield can differ from bulk by 100 times.  Also, the L-D curves and subsequent stress-strain are compression and depend on the structure of the test specim.  These are hollow tubes in compression at a very small scale, compared to the much larger scale of homogenous tensile specimen material and standardized testing that is used to compute the tensile stress-strain data in Ansys.

If I have missed your question, then please clarify.  Thank you.

Sean

[azarandi]

Hi Sean,

You are right. I appreciate your help.

Thanks,

[Sean Harvey]

Hello Azarandi

You are very welcome.  Thank you.

Regards,

Sean