Strength and Durability Analysis of the Double Planetary Gears

복합유성기어의 강도 및 내구성 해석

  • Received : 2014.09.29
  • Accepted : 2014.10.09
  • Published : 2014.10.31


A planetary gear train is more compact and endures greater amounts of transmission power compared to other gear systems. Although planetary gear systems operate in small volumes, they are capable of very high efficiency due to the compact combination of their gears in the planetary gear system. They also have outstanding efficiency of only 3% for power transmission, tantamount to the power loss that occurs in each of the shift stages. Given these advantages, planetary gear systems are used in the driving systems of, which are widely used in automobile transmissions, machine tools, semiconductor equipment, and in other areas in industrial fields. Current structural equipment requires higher efficiency and greater torque levels. According to these needs, we have designed a complex planetary gear system which creates higher levels of torque. In this paper, an evaluation of strength designs for the proposed planetary gear system was conducted to ensure the stability of the gear. In addition, a durability analysis based on Miner's rule was performed using RS B 0095 device.


Double planetary gear system;Strength verification;Load distribution;Durability analysis;Miner's cumulative damage rule


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Supported by : 한국산업기술진흥원