Hello.
I study solid mechanics at a graduate school.
I tried to derive tangent modulus of the Mooney-Rivlin based Neo-Hookean material.
There might be no error in my derivation, but answer is wrong with referred right answer.
So, could you check my derivation?
I attached my derivation as a figure.
Hello,
I am working on my master's thesis. I have to find best fitting hyperelastic material model for simple shear test.
My task is to find most proper material model which will fit my laboratory test data. I have conducted the "single lap test" on bricks, using polymer PS.
Hello,
I am working on testing of rubber couplings. I have a problem, that while doing torsional test of the coupling, we are getting different values of stiffness with change in time. Even if we do the testing and then take a small break of 10-20 minutes, then also after 20 minutes I am getting different values.
My question is, that is it possible because of Mullin effect? If so, How can we check that the rubber couplings that I have are filled or not( one piece rubber or filler with some other elastomer)?