Hello, I am trying to run a Riks analysis on a straight pipeline with an initial small imperfection. I define the nodes, apply pressure and weight loads and then I start the Riks analysis. I have tried many many times but the model doesn't seem to converge. Not even when I apply the pressure or...
Hello, I am trying to model a pipeline with internal pressure. I want to introduce an imperfection to the model through the *IMPERFECTION command. I tried:
(a) *IMPERFECTION, INPUT=Imperfection_Data.txt, and
(b) *IMPERFECTION (with the nodes and imperfection components in each direction below)...
Hello, I have a question concerning elbow elements in Abaqus.
I am trying to model a pipe that is made from a mix of elbow elements and shell elements under a constant internal pressure. I read that Abaqus assumes a closed-end condition for ELBOW elements and if an open-end condition is to be...
Hello, I'm having a problem modelling a straight thick pipe under compressive axial load with shell elements. I'm interested in finding the eigenvalues/eigenmodes of the pipe using a linear perturbation step (buckle).
Before that, I have tried to model the pipe with elbow31 elements and the 1st...
