Compression testing fixtures and elastic properties homework

[Gelate]

urgent help needed: compression testing

hi guys, I have some homework problems about compression testing, please kindly help me out, I need to complete them by tomorrow but I have struggled for days...

1. what are the possible fixtures for compression testing?
--- contrast them with those used for the tensile test.
---List all the elements of design needed for a fixture of this type (e.g., alignment, surface finish & etc.)

2. What are the difficulties in determining both elastic properties and the flow curve for both test types?

3. Review the methods that could be used to determine the flow properties considering the possible sources of error considering and ranking each method in terms of accuracy. This review should include specific examples and sources of error.

I do understand the term "flow properties" -- does it mean "stress vs. strain curve"?


These problems confused me for the whole weekend... if you know answer to any of them, please kindly share with me-... no need to address all these questions in a time


many thanks...

 

[JaredJames]

This needs to be posted in the homework section.

 

[Gelate]

urgent help needed- compression testing

Homework Statement

hi guys, I have some homework problems about compression testing, please kindly help me out, I need to complete them by tomorrow but I have struggled for days...

1. what are the possible fixtures for compression testing?
--- contrast them with those used for the tensile test.
---List all the elements of design needed for a fixture of this type (e.g., alignment, surface finish & etc.)

2. What are the difficulties in determining both elastic properties and the flow curve for both test types?

3. Review the methods that could be used to determine the flow properties considering the possible sources of error considering and ranking each method in terms of accuracy. This review should include specific examples and sources of error.

Homework Equations

The Attempt at a Solution

I was reading some mechanical books by Dieter and Dowling, but there is very limited information about compression testing fixture.
And I am not sure about term "flow properties" -- does it mean "stress vs. strain curve"?

These problems confused me for the whole weekend... if you know answer to any of them, please kindly share with me-... no need to address all these questions in a time

many thanks...

 

[Gelate]

thanks! I've moved it to the homework section --->
https://www.physicsforums.com/showthread.php?p=2940609#post2940609

 

[berkeman]

thanks! I've moved it to the homework section --->
https://www.physicsforums.com/showthread.php?p=2940609#post2940609

You don't "move" your own thread by making a duplicate post. You clidk the Report button, and ask the Mentors to move it. I've merged your two threads into this one here in the Homework Help forum.