dr_constrained_numpy
- compas_dr.solvers.dr_constrained_numpy(*, indata, constraints, kmax=10000, dt=1.0, tol1=0.001, tol2=1e-06, c=0.1, rk_steps=2, damping=0.1, callback=None, callback_args=None)
Implementation of the dynamic relaxation method for form finding and analysis of articulated networks of axial-force members.
- Parameters:
- indata
compas_dr.numdata.InputData An input data object.
- constraintslist[
Constraint] Vertex constraints.
- kmaxint, optional
The maximum number of iterations.
- dtfloat, optional
The time step for the integration scheme.
- tol1float, optional
Tolerance for the sum of the length of all residual force vectors.
- tol2float, optional
Tolerance for the sum of the length of all displacement vectors.
- cfloat, optional
Value used to calculate coefficients “a” and “b”, with “a” used as a multiplication factor for the starting velocity for the RK integration at every iteration, and “b” used as a multiplication factor for the acceleration used during RK integration.
- rk_steps{1, 2, 4}, optional
The number of Runge Kutta integration steps.
- callbackcallable, optional
User-defined function that is called at every iteration. If provided, the callback will be called at every iteration with the following arguments
k: the number of the current iteration
x: the current vertex coordinates
crit1: the norm of the residual forces
crit2: the norm of the displacement vectors
callback_args: optional additional arguments
- callback_argstuple, optional
Additional arguments passed to the callback.
- indata
- Returns:
compas_dr.numdata.ResultDataA result data object.
- Raises:
- ValueError
If a callback function is provided that is not callable.
Notes
For more info, see [1].
References
[1]De Laet L., Veenendaal D., Van Mele T., Mollaert M. and Block P., Bending incorporated: designing tension structures by integrating bending-active elements, Proceedings of Tensinet Symposium 2013,Istanbul, Turkey, 2013.
Examples
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