Hi,
I am trying to make a model in Abaqus of concrete column exposure to fire to all sides. I use CDP model for concrete without expansion.
I import modul of elasticity in elastic material and stress-(plastic strain-stress in yield/E module) for 20,100,200,...,1100 degrees Celsius.
First step in model is vertical load and second- thermal analysis.
When I don`t import compression damage in CDP model convergence, but stress in core of the column is greater than the yielding stress in CDP input data. Maximum stress S33 at 20 degrees in CDP is 30.3MPa and in output plot is 38.3,MPa at 1302 sec of fire. I can`t explain this. The rough and large mesh has no influence on the results.
When i import values in compression damage in CDP model didn't convergence and write this errors:
DURING THE CONVERSION FROM CRUSHING TO PLASTIC STRAIN Abaqus FOUND NEGATIVE AND/OR DECREASING VALUES OF PLASTIC STRAIN. VERIFY THAT THE DEGRADATION DATA UNDER *CONCRETE COMPRESSION DAMAGE IS CORRECT
DURING THE CONVERSION FROM CRUSHING TO PLASTIC STRAIN Abaqus FOUND NEGATIVE AND/OR DECREASING VALUES OF PLASTIC STRAIN. VERIFY THAT THE DEGRADATION DATA UNDER *CONCRETE COMPRESSION DAMAGE IS CORRECT
I am trying to make a model in Abaqus of concrete column exposure to fire to all sides. I use CDP model for concrete without expansion.
I import modul of elasticity in elastic material and stress-(plastic strain-stress in yield/E module) for 20,100,200,...,1100 degrees Celsius.
First step in model is vertical load and second- thermal analysis.
When I don`t import compression damage in CDP model convergence, but stress in core of the column is greater than the yielding stress in CDP input data. Maximum stress S33 at 20 degrees in CDP is 30.3MPa and in output plot is 38.3,MPa at 1302 sec of fire. I can`t explain this. The rough and large mesh has no influence on the results.
When i import values in compression damage in CDP model didn't convergence and write this errors:
DURING THE CONVERSION FROM CRUSHING TO PLASTIC STRAIN Abaqus FOUND NEGATIVE AND/OR DECREASING VALUES OF PLASTIC STRAIN. VERIFY THAT THE DEGRADATION DATA UNDER *CONCRETE COMPRESSION DAMAGE IS CORRECT
DURING THE CONVERSION FROM CRUSHING TO PLASTIC STRAIN Abaqus FOUND NEGATIVE AND/OR DECREASING VALUES OF PLASTIC STRAIN. VERIFY THAT THE DEGRADATION DATA UNDER *CONCRETE COMPRESSION DAMAGE IS CORRECT
