Optimization rules of hydraulic absorber's energy absorbing

摘要

For optimizing hydraulic absorber's energy absorbing, we've studied the effects of the velocity point (V_(max)), the valve's opening gate (V_0), the stage after the valve is open and the hysteretic lag. The equations of the F-V history curve and the F-S curve at the stage before the valve is open (T_1) and after the valve is open (T_2) were set up. When V_(max) was bigger, T_1 was shorter and the displacement of the opening gate (S_0) was smaller. But S_0 was approximate to A. If we advanced V_0, S_0 would be smaller, but S_0 was still close to A and it might cause an abnormal vibration. The F-S curve was an ellipse curve at T_2. The area of this ellipse was close to k_2, but the plumpness degree (Φ) was a constant. The damping force's hysteretic lag would induce the F-S curve's un-plumpness and over-plumpness. The un-plumpness is more severe than the over-plumpness. It is proper to use the opening gate instead of Φ to describe the damping force's hysteretic lag.