ACE缓冲器有效重量计算方法指导。.ppt

Tamperproof, but inflexible One effective weight Used when optimum performance is required World leader in deceleration technology Effective Weight (We) Effective weight determines the total orifice area (the sum of all the orifices) and determines how this area must decrease to provide linear deceleration. Effective Weight Orifice design is the direct result of the Effective Weight calculation. Orifice Design Over the years the technology has evolved into three primary orficing types. Hydro Shock Fixed Provides lowest reaction force at a single weight Self Comp Fixed Provides good performance over a wide range of weights Types of Orificing Hydro Shock Adjustable Provides lowest reaction force at multiple weights Hydro-Shock Design Fixed Constant orifice size Exponential spacing Hydro-Shock Adjustable Design Slot over orifice arrangement Constant size orifices Exponential spacing Self-Compensating Fixed Large orifices at the start of stroke, smaller orifices toward the end Computer designed self-compensating arrangement Hydro-Shock ~ Fixed Design L O C K 9 8 7 6 5 4 3 2 1 0 Adjustable Design Not tamperproof, but very flexible Very wide effective weight range Used for many applications at same plant Both ~ Self-Compensating Designs Tamperproof and flexible Wide effective weight range Used for a range of conditions in the same application Self-Compensation “Back to the Future” Focus On Self-Compensation Definition: A fixed, multi-orificed device that provides acceptable deceleration over a wide range of effective weights (We). Provides some of the flexibility of an adjustable shock absorber Also provides tamperproof feature of the hydroshock Self-compensating units generally have: Higher reaction forces Lower peak energy per cycle ratings. Self-Compensation and Efficiency Stroke Force Hydroshock Adjustable shock absorber properly tuned, or hydro shock perfectly matched Shock Performance (Force vs. Stroke) Stroke Force Self-Compensating Self-co