
#1
Feb111, 09:36 AM

P: 3

Hi All,
Im new here, please be kind to me :) I am trying to solve a contact problem (e.g. between a cantilever beam and a fixed block). I am trying to run a Transient analysis but ANSYS wouldnt let me include nonlinearity. If I try to input an APDL file with material nonlinearity(mu) and contact description (CONTA,TARGE), it just crashes without giving any warnings (or is it a problem with my comp?). Is it true that nonlinear problems cant be solved in time domain? and have to be done in frequency domain? Whats the difference between the two? In my understanding the frequency domain is just a fourier transform of the time domain functions. What equation is it actually solving here? I know one basic equation which it should be solving: Mx''+Cx'+kx= F(t) with damping matrix C being a function of eta, alpha and beta damping. I am not an expert in vibration analysis hence right now a bit confused. Would be great if anyone could suggest me right literature to look at. Cheers! 


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