Hello,
when we use newmark integrator with gama=0.5 and beta=0.25 for analyzing, can we be sure that we won't have instability in both linear and nonlinear analyses?
thanks
for linear case yes .. for nonlinear no .. have a look in the book "Nonlinear Finite Elements for Continua and Structures" by Belytschko, Liu and Moran for some discussion.