DIIDynamic nsteps #(in)
deltaT #(rn)
alpha #(rn)
beta #(rn)
Psi #(rn)

Represents direct implicit integration of linear dynamic problems. Damping is modeled as Rayleigh damping $ (\boldsymbol{c} =
\rm {alpha}*\boldsymbol{M} + \rm {beta} * \boldsymbol{K})$. Parameter Psi determines integration method used, forPsi = 1 the Newmark and for Psi $ \ge$ 1.37 the Wilson method will be used. Parameter deltaT is required time integration step length.

Borek Patzak