There are various studies on the effect of different displacement rates during e.g. ring shear tests on the measured shear strength and on the possible implications for the landslide behaviour. However, it seems to me that all studies focus on specific aspects (stress range, rate range or material) and there are no recent attempts to provide comprehensive views.
Is anyone currently working on the matter or, at least, performing direct or ring shear tests at various velocities? Is anyone trying to correlate their results to actual landslide behaviours? I would be glad to share data and opinions and, why not, to discuss some interpretations and work on a paper together.
The rate effect on residual strength is still a controversial issue although many researchers have done on this. I am also working on the residual strength by using ring shear test. I realized that it is difficult to give the comprehensive views because it is affected by many factors. However, I am trying to resolve a part of this problem. When my paper is published, I will share it with you. If you have any new information about it, please share with me. Many thanks in advance!
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