computes the modes of a structure
[Umod,T_period,Phi] = femmode(ffd,K,M,Log,nbmodes,varargin)
a function which returns the parameters of a structure. Must have the following prototype:
The varargin(1)
parameters is optional.
The stiffness matrix (computed via a call to femtruss
)
The mass matrix (computed via a call to femtruss
)
if %T
then we print some intermediate messages
the number of modes to be computed
some optional parameters sent to ffd
the vectors of deformations for each mode. A vector of size npoints x nbmodes.
the period of the computed modes. A vector of size nbmodes.
the eigen modes of the structure. A vector of size npoints x nbmodes.
Compute the modes of a structure.