Learning Forum

[Haiquan]

HellonANSYS wear simulation seems a non linear contatct one using Archard wear model, but I encountered wear issue in long time harmonic vibration or PSD, they are all linear dynamics. How to perform such wear simulation? Thank you in advance!n

[Dave Looman]

In a harmonic one could specify a linear form of contact such as no separation and compute the Archard wear rate by hand based on the harmonic results at the contact surface. Relative displacement of the contact surfaces could be multiplied by omega (2pi*Freq) to obtain a relative velocity. An average velocity could be assumed to be 0.707 times the harmonic zero to peak value. In a PSD analysis one could use the one sigma velocity of a moving surface relative to a stationary surface to hand calculate the wear rate.n

[Haiquan]

Thank you so much for your advice, that is really helpful! nFor harmonic, is it possible to perform non linear transient dynamics for several cycles of sine excitation and then look at the pressure and velocity for wear evaluation?n