Chúng tôi xem xét m Giá mùa xuân t We considered a wide range of spring stiffness and damping properties to determine the optimum values. Spring rates of 10,000 to 60,000 lbs/in were analyzed. The best compromise was found at 30,000 lb/in for the 6 3/4 “ tool. Lower spring rates would require large
displacements for the damper, while stiffer springs do not provide enough motion for the damper
to effectively reduce vibration.
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