Learning Forum

[Erica2018a]

Working in Ansys Workbench, I have a simple line geometry which I given a rectangular cross section to model a simple tensile creep sample. In mechanical I have 2 time steps with Creep off for the first and On for the second. The software does not offer me the Creep Strain output in the Solution. I have checked the APDL element reference and it says that beam element 188 can be used for CREEP................. am I missing something here?nThe model also doesn't want to converge on the 2nd time steps ... it says nEquivalent creep strain ratio has exceeded the specified limit value. Since the time increment has reached the minimum value, the analysis is stopped. nn

[John Doyle]

In Details Window of Solution, set Post Processing =>Beam Section Results = Yes.nInsert user defined result and use expression epcrx or epcry, epcrz to plot components of creep strain in the beam body.nThe creep ratio is creep strain/elasstic strain. The limit is arbitrarily set to 1. When this limit is exceeded, it will trigger a bisection until min time is reach, which it sounds like it has been reached. Depending on how large the elastic strain is relative to creep strain, perhaps you need a much higher limit and/or many more time steps.nn