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pbzvmz
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by pbzvmz » Tue Oct 12, 2010 1:31 pm
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
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fmk
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by fmk » Tue Oct 12, 2010 3:00 pm
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.