TY - JOUR ID - TI - Investigation Vibration Damping in the Hydraulic Systems by Using an Accumulator AU - Hisham. A. Hoshi AU - Huda.A.Al-Sali AU - Walaa.M. Hashim PY - 2018 VL - 36 IS - 12 Part (A) Engineering SP - 1276 EP - 1282 JO - Engineering and Technology Journal مجلة الهندسة والتكنولوجيا SN - 16816900 24120758 AB - It is generally accepted that the vibration of fluid power systemsconsidered to be one of the major problems that is normally occurred in thehydraulic system, which causes a noise and short life of its components.Accordingly, it should be reduced the efficiency as well as an increase leakagesystem. Hence, present study pays more attention to investigate a bladder anaccumulator which was successfully added to the hydraulic system in order toreduce the vibrations that might be generated by the system and decelerate theactuator at the end stroke. Which variables are measured before relief anddirectional valve and at the linear cylinder body. It was found that the maximumpercentage damping in vibration velocity at a position before relief anddirectional control valve and at cylinder body was 20%, 20.8% and 55% at 20and 15 bar pressure supply respectively. Whereas, it was observed theacceleration was 11.3%, 12.5% and 50% at 40 bar pressure supply. Also, it wasfound that the piston begins decelerate gradually from distance 25cm in whichequal to 1/6 of total stroke length with a period of time 5 seconds.

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