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Dear Chris and Gil, Thank you for your comments. I am quoting from Chris's comment: "For very fast measurements (or low temperatures), the polymer has no time to flow..." And from Gil's comment: "...This happens because the material has elasticity for quick loads but shows viscosty (flows)...

Chris, Sorry to make yourself in a confusion state which has not being my intention. From the first place, I am not trying to focus on the polymer materials per se. I am just curious and playing with my thinking as what if there is a material which may have a duality property characteristic...

Chris, Thanks for the comment. However, I am pretty sure that the time-independent Young's modulus does not depend on temperature either. So, the WLF equation does indeed not applicable in this situation. To make myself clear, the time-independent Young's modulus is also called as simply...

Hi all, I have this confusing thought for a quite long time. Is there any relation between the time-independent Young's modulus with the time-dependent Young's modulus (instantaneous and equilibrium moduli or loss and storage moduli)? If yes, what is the equation to relate them? So many...

Hi all, I read the ABAQUS documentation regarding the post-buckling analysis (6.2.3 and 6.2.4). I tried to perform the post-buckling analysis using the IMPERFECTION command and RIKS step. However, the resulting shape of my sample (a bar with a rectangular cross section) did not tally with the...

I didn't paste all the input file. Below is the complete input file: *Heading Axial load ** Job name: Force Model name: Model-1 *Preprint, echo=NO, model=NO, history=NO, contact=NO ** ** PARTS ** *Part, name="Soft nanoneedle" *Node 1, -500., 350., 10000. 2...

Thanks for the reply. So I guess the problem must be something else. My sample is a bar with a rectangular cross section (170 nm * 150 nm). Material's Young's modulus and Poisson ratio is 100GPa and 0.3 respectively. If you find any mistake on my input file below, please kindly inform me...

Hi all, I ran a pre-buckling analysis using ABAQUS. However, I found the eigenvalue (in nN range) is not as what I expected (uN range). My initial guess for this problem is due to the unit conversion. I choose nanometer as my unit length. For Young's modulus value, I wrote 0.0000001 for 100...