TIME
Solution control and techniques
$t_{term}$, $sf_{\Delta t}$, $\Delta t_{\mathrm{min}}$, $\Delta t_{\mathrm{max}}$, $ms_{\mathrm{max}}$, $t_{start}$
Parameter definition
Description
This command is used to define the duration of the simulated event and to specify parameters controlling the time step size. If defining a termination FUNCTION the simulation will run until the FUNCTION obtains a positive value.
Mass scaling is activated if the critical time step size drops below $\Delta t_{\mathrm{min}}$. Note that it is possible to define $\Delta t_{\mathrm{min}}$ and $\Delta t_{\mathrm{max}}$ as functions of time with a CURVE or as a more general expression using a FUNCTION.
$ms_{\mathrm{max}}$ is optional and defines maximum allowed element mass scaling factor.
Example
Trigger termination with a function
The following example is a complete model of a dynamically deforming rubber block. FUNCTION 222 signals for termination when the kinetic energy has reduced to less than one percent of its initial value.
Minimum allowed time step size
A simple example where the minimum allowed time step sized is defined as a function of time. If necessary, mass scaling will be activated in order to maintain the specified minimum time step size.
