Allowable Transmission Load of Carburized Gear for Risk Management
Grant-in-Aid for Scientific Research (B)
|Allocation Type||Single-year Grants |
Design engineering/Machine functional elements/Tribology
|Research Institution||Tohoku University |
INOUE Katsumi Tohoku University, Graduate school of Engineering, Professor, 大学院工学研究科, 教授 (90005554)
YAMANAKA Masashi Tohoku University, Graduate school of Engineering, Associate Professor, 大学院工学研究科, 助教授 (20292229)
MASUYAMA Tomoya Tsuruoka National College of Technology, Department of Mechanical Engineering, Associate Professor, 機械工学科, 助教授 (80282094)
NARITA Yukihito Tohoku University, Graduate school of Engineering, Research Associate, 大学院工学研究科, 助手 (90431519)
|Project Period (FY)
2004 – 2006
Completed (Fiscal Year 2006)
|Budget Amount *help
¥15,100,000 (Direct Cost: ¥15,100,000)
Fiscal Year 2006: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2005: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2004: ¥11,100,000 (Direct Cost: ¥11,100,000)
|Keywords||Gear / Strength / Reliability / Fatigue / Hertzian contact stress / P-S-N curves / Probability of damage / Risk management|
The damage of the gears brings the large economic loss, and has the risk of causing the accident which involves the human lives. Thus the risk management of the gears is extremely important. On the other hand, in order to decrease the energy consumption, the power transmission gear system is required to be the downsizing and the long-term reliability. To estimate the probability of damage of the gears is indispensable for this purpose.
In this research, the following project was carried out for a term of 3 years since 2004 in order to apply the risk management to the design of the carburized gears.
・Developing a simulation method to estimate the fatigue strength based on distribution of the inclusions.
・Validation of a simulation method based on the fatigue tests of the gears.
・Establishing a method for the estimation and assuring the allowable stress of the carburized gears in consideration of the probability of damage.
To achieve above subjects, the various research were carried out from the broad view points, and following result were obtained.
・Estimation of P-S-N curves in view of the reliability design of the carburized gears.
・Quantitative evaluation of the strain near the tooth fillet by an image processing
・Development of the fatigue strength simulation in the reliability design of the carburized gears.
・Development of the surface durability simulation considering the distribution of the inclusions.
Report (4 results)
Research Products (15 results)