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4.3 Modified Elasticity

Modified elasticity is used to modify the elasticity parameters during the analysis. The model is particularly relevant for soil mechanics, e.g. to modify Poisson's ratio and Young's modulus after having set the long term (drained) initial soil stresses.

(syntax)

$\begin{figure}\centering \begin{tabbing} \texttt{'MATERI'} \\ [-1.0ex] \rule{14... ...e{12ex}\emph{repeat existing nonlinear items, if any} \end{tabbing} \end{figure}$

YOUNG: mode is the modified value of Young's modulus E .
POISON: modnu is the modified value of Poisson's ratio $\nu$ .

The following command sequence modifies the elastic properties, using the specified new values in table 'MATERI'.

(file.dcf)

*INPUT
READ APPEND FILE="newmat" TABLE MATERI
*NONLIN
BEGIN MODEL
 EVALUA
 ASSEMB OFF
 MATRIX
 LOADS OFF
END MODEL
...

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

Copyright (c) 2008 by TNO DIANA BV.