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[Solved] Measuring BB Model parameters under high strain rate and varying temperature

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Posts: 6
Topic starter
(@RobertApodaca)
Active Member
Joined: 9 years ago

Hi,

I am doing a finite element modeling of a ultrasonic process. The material is compressed under a high strain rate. How to measure those parameters under a high strain rate. Besides, because it is a welding process, the parameters might also change with the temperature?

Can anyone give me a hint?

Thanks!

Ziwei

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Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

What is the material?
What is the strain rate range?
What is the temperature range?
How large strains to you expect?

There are many different tests can potentially be very useful for characterizing the material response under relevant conditions.

-Jorgen

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3 Replies
Posts: 6
Topic starter
(@RobertApodaca)
Active Member
Joined: 9 years ago

[QUOTE=Jorgen,13159]What is the material?

What is the strain rate range?

What is the temperature range?

How large strains to you expect?

There are many different tests can potentially be very useful for characterizing the material response under relevant conditions.

-Jorgen

Thanks for replying

The material is carbon reinforced fiber composite material.

I dont know the exact strain rate but the velocity of displacement would be 4m/s.

The temperature range would be 30c to 200c.

The largest strain we are expecting would be 0.04

Can you recommend some experiments?

Thanks!

Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

i would use slow and fast uniaxial compression tests. I would also use Split Hopkinson Pressure Bar tests (which can reach very high rates. We run those tests in our lab (for example).

Best of luck,
Jorgen

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