time dependent young's modulus
time dependent young's modulus
(OP)
Hello,
Hello I am doing a thermal analysis of concrete at early ages and I would like to introduce the elastic modulus versus time to take account of cement hydration.
First of all, I tried to use Field Variable to define dependence between Young's modulus and time
** E, v, temp, FV1
1.89e+10, 0.3, , 0
2.45e+10, 0.3, , 1
2.85e+10, 0.3, , 2
But I didn't know how to connect amplitude with field variables.
Thank you very much.
Hello I am doing a thermal analysis of concrete at early ages and I would like to introduce the elastic modulus versus time to take account of cement hydration.
First of all, I tried to use Field Variable to define dependence between Young's modulus and time
** E, v, temp, FV1
1.89e+10, 0.3, , 0
2.45e+10, 0.3, , 1
2.85e+10, 0.3, , 2
But I didn't know how to connect amplitude with field variables.
Thank you very much.





RE: time dependent young's modulus
Reference between field variable and amplitude value is made via *FIELD keyword and *NSET which have all nodes attached to your material.
CODE
** *MATERIAL, NAME=myMat *ELASTIC, DEPENDENCIES=1, TYPE=ISOTROPIC ** E, v, temp, FV1 1.89e+10, 0.3, , 1.89e+10 2.45e+10, 0.3, , 2.45e+10 2.85e+10, 0.3, , 2.85e+10 ** *NSET, NSET=mat-FV-NSET, ELSET=all_myMat_elements ** *AMPLITUDE, NAME=MyMat_E, DEFINITION=TABULAR ** time, FV1/E 0.0, 1.89e+10 10.0, 2.45e+10 20.0, 2.85e+10 ** *FIELD, VARIABLE=1, AMPLITUDE=MyMat_E mat-FV-NSET, 1.0 **You can use FV 0, 1, 2 as in your example but I prefer use E value so I can think about amplitude y values as E.
Regards,
Bartosz
VIM filetype plugin for Abaqus
https://github.com/gradzikb/vim-abaqus