fedoo.problem.Newmark.SetRayleighDamping

Newmark.SetRayleighDamping(alpha, beta)

Compute the damping matrix from the Rayleigh’s model: [C] = alpha*[M] + beta*[K]

where [C] is the damping matrix, [M] is the mass matrix and [K] is the stiffness matrix Note: The rayleigh model with alpha = 0 and beta = Viscosity/YoungModulus is almost equivalent to the multi-axial Kelvin-Voigt model

Warning: the damping matrix is not automatically updated when mass and stiffness matrix are modified.