Register to reply

ANSYS: Contact problem

by pseudorandom
Tags: contact, frequency domain, vibration
Share this thread:
Feb1-11, 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 non-linearity. If I try to input an APDL file with material non-linearity(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 non-linear 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.

Phys.Org News Partner Science news on
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100

Register to reply

Related Discussions
ANSYS Workbench contact problem Mechanical Engineering 8
Ansys 12 problem Mechanical Engineering 0
ANSYS RBE3 command vs Contact Wizard Mechanical Engineering 4
Contact force problem? Introductory Physics Homework 1
Contact force problem Introductory Physics Homework 3