must points

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  • maas
    Lead Code Developer
    • Nov 2007
    • 3400

    must points

    DESCRIPTION:
    FEBio supports must-points. These are points that the solution will be forced to pass through. Must points are specified using a load curve. Each point of the load curve specifies a must point. The ordinate of the must point is the time value, where the coordinate is the maximum time step size that can be taken up to that point. Also note that the first point MUST be (0,0).
    The use of must points is activated by setting the "lc" attribute in the dtmax variable (in the time_stepper element of the Control section). The value of the attribute is the ID of the load curve.
    <dtmax lc="1"></dtmax>
    In this case, the value of the dtmax variable will be ignored, since the max time steps are now defined through the load curve.
    The attached example shows the use of a load curve. Also note the presence of the following element in the control section.
    <plot_level>PLOT_MUST_POINTS</plot_level>
    This specifies that only the must points will be stored in the plot file. This is useful for long analyses to reduce the amount of data stored in the plot file.

    REQUIRES: FEBio version 1.0 (or up)
    Department of Bioengineering, University of Utah
    Scientific Computing and Imaging institute, University of Utah
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