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Nonlinear System  Script 
Free Vibration of an SDOF System with Dahl Damping  sdof_free_Dahl.m Newmark_coefficients.m tmpfriction.pdf 
Base Excitation  Script 
Time history response of a singledegreeoffreedom system to an arbitrary acceleration base input via the Newmark method. 
arbit_newmark_acc.mNewmark_coefficients.m 
Time history response of a multidegreeoffreedom system to an arbitrary acceleration base input via the Newmark method.This is a modal transient variant. It is intended for the case where the damping is given in terms of a modal damping ratio.This script can also be used for enforced acceleration. 
mdof_modal_enforced_acceleration_nm.m Supporting functions: Newmark_coefficients.m partition_matrices.m ODE_acceleration_input.m Generalized_Eigen.mmdof_plot.mplot_legend.m
Reference: 
Time history response of a multidegreeoffreedom system to an arbitrary displacement base input via the Newmark method.This is a modal transient variant. It is intended for the case where the damping is given in terms of a modal damping ratio.This script can also be used for enforced displacement. 
mdof_modal_enforced_displacement_nm.m Supporting functions: Newmark_coefficients.m partition_matrices.m ODE_displacement_input.m Generalized_Eigen.mmdof_plot.mplot_legend.m
Reference: 
Applied Force  Script 
Time history response of a singledegreeoffreedom system to an applied force via the Newmark method. 
arbit_newmark_force.mNewmark_coefficients.m 
Time history response of a multidegreeoffreedom system to an applied force or forces via the Newmark method.This is a direct integration variant. It is intended for the case where the damping is given in terms of a damping coefficient matrix. 
mdof_arbit_force_newmark.m Supporting functions: Generalized_Eigen.mODE_force_input.mNewmark_force.m mdof_plot.m plot_legend.m

Time history response of a multidegreeoffreedom system to an applied force or forces via the Newmark method.This is a modal transient variant. It is intended for the case where the damping is given in terms of a modal damping ratio. 
mdof_modal_arbit_force_newmark.m Supporting functions: Generalized_Eigen.mODE_force_input.mNewmark_modal_force.m mdof_plot.m plot_legend.m

See also:

