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[Rohit John <question694531@xxxxxxxxxxxxxxxxxxxxx>]

Question #694531 on Yade changed:
https://answers.launchpad.net/yade/+question/694531

    Status: Answered => Open

Rohit John is still having a problem:
Thank you Jan and Bruno for your comments.

>From Jan's comments
Please correct me if I am wrong, does geom->rotate(espT) rotate the vector from previous frame of reference (from previous time step) to the current time step?


>From Bruno's comments
I like your idea Bruno, but when I though about it I had a doubt. What would happen if  dFt/dut = 0. In that case Ft would be stuck at a value, will it not? To illustrate consider 

Let Ft(ut)     = ut^3
dFt/dut = 3*ut^2
dFt/dut = 3*Ft^(2/3)

at Ft = 0, dFt/dut = 0

Discretizing
Ft(tn+1) = Ft(tn) + dFt/dut*ut(tn), here tn denotes nth time step,
if  dFt/dut = 0, then  Ft(tn+1) = Ft(tn). So this will continue with the subsequent steps.

I really appreciate your help and advice, I hope you would give me some
tips to solve this problem.

Kind regards,
Rohit K. John

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