Sven,
A stiffness matrix is only relevant when you have a system that is
described by linear differential equations. In the general, non-linear form
of the equations of motion of a rigidbody system there is only one matrix
that can be extracted, i.e. the matrix of coefficients for the
from sympy.physics.mechanics import *
provides:
LM = LagrangesMethod(L, [q1, q2])
and:
LM.mass_matrix
i.e. a matrix of some coefficients...
Why is there no:
LM.stiffness_matrix
i.e. a matrix of some other coefficients...?
Regards,
Sven
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You received this message because you are
from sympy.physics.mechanics import *
LM = LagrangesMethod(L, [q1, q2])
LM.form_lagranges_equations()
LM.mass_matrix
gives the *mass matrix* - which contains some coefficients.
Why is there no:
LM.stiffness_matrix
giving the *stiffness matrix* - containing some other coefficients?
Regards,
