Question #675377 on Yade changed: https://answers.launchpad.net/yade/+question/675377
Mehdi Pouragha posted a new comment: The objective was to 1) apply constant normal and shear strain rates, and 2) measure the strains-- both within small strain ranges. As you mentioned, the first one conveniently is done through maxStrainRate. The second point, measurement of strain, can be done for normal strains through triax.strain, as you indicated. The difficulty was with shear terms. For the shear strains, my rookie mistake was to think that; regardless of the current value of cell.trsf, if the applied "increment" of the strain is small, we can still measure the shear strain by finding the change in cell.getSmallStrain(). This appears not to be true. But I can imagine it might be a plausible mistake to make. Yes, we can say there is no need to consider small strain increments at all, and all the ambiguities are resolved if we use finite strain calculation. But still, in many cases, people like me are interested in small strains and may resort to convenient small strain calculations and functions, without noticing the pitfalls. All I was suggesting is that it would be helpful to mention that functions such as cell.getSmallStrain() will contain non-negligible errors, even for small increments of strain, if the cell.trsf is far from identity. -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
