11.3.2 Tension Cut-off USRCRK

Next: 11.3.3 Tension Softening USRTEN Up: 11.3 Plasticity and Cracking Previous: 11.3.1 General Curve USRCRV Contents Index

11.3.2 Tension Cut-off `USRCRK`

User-supplied subroutines USRCRK and USRTEN may be used to specify ambient influence on tension cut-off and tension softening of the crack models [Ch.6]. If USRCRK is specified in table 'MATERI' then subroutine USRCRK must be supplied to set up the tensile strength f_t and the compressive strength f_c . This subroutine is used to specify ambient influence (temperature, concentration, maturity) and time dependency.

(Fortran)

      SUBROUTINE USRCRK( usrkey, te, co, ma, ti, ft, fc )

$\begin{figure}\centering \begin{tabbing} out~~\=\textsc{dbl}~~\=\texttt{abcdef... ...sc{dbl}\>\texttt{fc}\>Compressive strength. \\ [-3ex] \end{tabbing} \end{figure}$

usrkey: is the user-supplied keyword from input table 'MATERI'. This can be used to model various functions within one subroutine.
ft: is the tensile strength f_t , applied with all tension cut-off criteria.
fc: is the compressive strength f_c , applied with linear tension cut-off only.

DIANA-9.3 User's Manual - Material Library
First ed.

Copyright (c) 2008 by TNO DIANA BV.