ningliu
Civil/Environmental
- Mar 18, 2015
- 1
Hi,
I'm trying to model a cantilever beam with a tip cyclic load. I use Ramberg-Osgood hardening in my own code and I am trying to verify it using abaqus. I use isotropic hardening in abaqus, which allows me to copy in a bunch of data points to define the stress-strain relationship for the loading part. However, when it comes to unloading, abaqus result is not that smooth (it seems that abaqus ignores Bauschinger effect). I know isotropic hardening doesn't consider Bauschinger effect, but when I use kinematic hardening, I'm not allowed to copy in more than 2 data points to define stress-strain curve. I also tried combined hardening in abaqus (I use the half cycle), but the result is too wider than actual. Can anyone help me with that? Thanks in advance!
Nathan.
I'm trying to model a cantilever beam with a tip cyclic load. I use Ramberg-Osgood hardening in my own code and I am trying to verify it using abaqus. I use isotropic hardening in abaqus, which allows me to copy in a bunch of data points to define the stress-strain relationship for the loading part. However, when it comes to unloading, abaqus result is not that smooth (it seems that abaqus ignores Bauschinger effect). I know isotropic hardening doesn't consider Bauschinger effect, but when I use kinematic hardening, I'm not allowed to copy in more than 2 data points to define stress-strain curve. I also tried combined hardening in abaqus (I use the half cycle), but the result is too wider than actual. Can anyone help me with that? Thanks in advance!
Nathan.