Ask iMechanica

I am trying to find the listing of committees of AMD.  Not a simple task...  The ASME CustomerCare office is now trying to figure that out...  In particular, perhaps someone knows: who is the current Chair of Committee on Constitutive Equations?

Thank you,

Martin

HELLO EVERY ONE,

I am working on distortion problem in milling of large aeronautic parts. I want to implement element deletion method on my model. I check several videos and documents regarding this but it required failure criteria and it applied on whole model but I want to deactivate selected element at every analysis step.

Kindly help me Its an urgent task I need to complete.

Thanks in ADVANCE

Hello,

I am trying to model a beam with dsitributed loading (triangular) in Abaqus. I figured out how to create pressure loading (N/m^2) or line loading (N/m) on a surface of the beam. But I did not find any option in Abaqus to assign any distributed moment along a line (Nm/m=N). Abaqus has only one option to apply the moment load, that is "moment" and the load unit is Nm. Can anybody please help me on how to create a distributed moment load in Abaqus?

Thanks

Pratik 

Hi everyone, 

I am learning Abaqus and wanna simulate a simple compression test on concrete cylinder using concrete damage platicity. I followed all directions from Youtube as well as Abaqus manual, unfortunately, the result (the stress-strain curve) was not correct. 
Could anyone can help me take a look at my file and give me some advices? 

Dear all,

I need to use two user-defined amplitudes in my model in order to apply two separate variable-dependent forces on two separate partitions. I have been struggling with this for long now, and the documentation says "There is one exception in Abaqus/Standard: only one solution-dependent amplitude (used for superplastic forming) can be active during each step."

I see the possibility of defining multiple solution-dependent amplitudes in CAE, but in UAMP the variables such as ampValueOld, ampValueNew, etc. may take only one value. 

Hello researchers

I have a question about modeling a multiple type constraint in one coincidence point between different wire elements. This has illustrated in the following picture:

https://www.4shared.com/photo/X9pr5knIei/Capture.html

I want to define constraint in the orange point as: element E1 and E2 are tied and Element E3 and E4 are pinned in coincidence orange point.

How I can do that?

We know when a metal is subjected to proper loading, there exists plastic strain. A great part of plastic strain is developed from the slipping of the crystal planes of that metal in microstructure level. Now, when the load is uniaxial, it is simple to calculate the amount of shear strain acts on that plane. But, when the load is not uniaxial, the life is harder. It is very hard to calculate which slip plane feels how much shear strain.

Hello, researchers. I have difficulty in understanding the physical meaning of Green-Lagrangian strain (E) and Eulerian-Almansi strain (A) measures. Mathematically speaking, I can derive the equations of these strains in different ways. But physically speaking, it's a bit harder to understand how these strains (E and A) can be pictured and how to give a proper physical definition for them. In a simple case, considering a uni-axial bar (Please refer the attached file), Engineering strain can be understood easily, but in E and A equations, from where do the squares of the lengths originate?

Please introduce the best journals and conferences in the field of welding. 

Thank you in advance

Mab

I would like to open a discussion in relation to the following question:

"Is the study of Low Cycle Fatigue (LCF) and cyclic plasticity useful for biomedical metals?"

It appears that there is some level of misunderstanding around this issue. Thus, I would be very interested to find out the views of iMechanica community engineers and researchers working on biomedical metals and applications (i.e. implants) on this.