Hello all,
I'm a newbie in soil modelling; have modelled a 'tank' full of soil using C3D8I elements (hexahedral). A rigid pipe is located buried within the the center and imposed a translation. The model converges if I leave the material card alone and merely input the elastic properties. But once I input the *Mohr Coulomb model by inputting the friction angle and dilation, as well as the hardening card (cohesion 2.5kPa), the model refuses to converge. Basically using numbers provided so I'm unaware of how accurate they are.
The bricks do not even get squashed and instead, the analysis terminates as soon the brick gets compressed.
Anyone can help?
Forums
What initial stress state
What initial stress state is in the soil? What is the nature of the interface between soil and pipe?
Charles