Subhash Rakheja

Nonlinear dynamic modeling and parameter identification of air springs in the ultra-low frequency range considering thermal hysteresis

The nonlinear dynamic performance of a constrained rolling-lobe air spring (CRLAS) is measured using a servo-controlled hydraulic test rig. Experimental results indicate that in the ultra-low frequency range (0.002–1 Hz), the dynamic stiffness increases sharply, while the loss an...