ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
(OP)
Smooth step (Amplitude) is helpful in avoiding excessive distortion at the beginning of the analysis, but I was wondering what is the maximum initial strain-rate we can use it? Say for example, in quasi-static the strain rate is 10-4 s-1 and Smooth step gives a better result than Ramp loading. So what is the upward limit of strain-rate that we can use the Smooth step, 1 s-1? 10 s-1? or 100 s-1??





RE: ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
RE: ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
RE: ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
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RE: ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
RE: ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
for a quasi-static explicit analysis, kinetic energy should be a small percentage of internal energy.
these slides might be helpful:
http://imechanica.org/files/l5-quasi-static.pdf
RE: ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
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RE: ABAQUS/Explicit: maximum initial strain-rate where Smooth step (Amplitude) is applicable?
In the experiment I am applying loading as "linear ramp", but in the simulation I am defining loading as "Smooth step". While in quasi-static strain-rate (10-4 s-1) this is not something important, my concern is that at high strain-rates (strain rate >1 s-1) the difference becomes something problematic?