Dynamic analysis with PLAXIS 3D
I have a question about the soil's internal friction angle in the DYNAMIC ANALYSIS.
Whenever we perform dynamic analysis in Plaxis, we have two options for input phi:
- To use the given internal friction angle of the soil (obtained from static teststhat is, small strain rate of loading), or
- the recommended dynamic internal friction angle proposed by ''Das, B. M., & Luo, Z. (2016). Principles of soil dynamics'', which is two degrees lower than the given internal friction angle of the soil.
Which one is correct for this purpose?