Optimal design of the gerotor (2-ellipses) for reducing maximum contact stress
Creators
- 1. Dept. of Mechanical Convergence Technology, Pusan National University, Busan (Korea, Republic of)
- 2. School of Mechanical Design and Manufacturing, Busan Institute of Science and Technology, Busan (Korea, Republic of)
Description
The oil pump, which is used as lubricator of engines and auto transmission, supplies working oil to the rotating elements to prevent wear. The gerotor pump is used widely in the automobile industry. When wear occurs due to contact between an inner rotor and an outer rotor, the efficiency of the gerotor pump decreases rapidly, and elastic deformation from the contacts also causes vibration and noise. This paper reports the optimal design of a gerotor with a 2-ellipses combined lobe shape that reduces the maximum contact stress. An automatic program was developed to calculate Hertzian contact stress of the gerotor using the Matlab and the effect of the design parameter on the maximum contact stress was analyzed. In addition, the method of theoretical analysis for obtaining the contact stress was verified by performing the fluid-structural coupled analysis using the commercial software, Ansys, considering both the driving force of the inner rotor and the fluid pressure, which is generated by working oil
Additional details
Publishing Information
- Journal Title
- Journal of Mechanical Science and Technology
- Journal Volume
- 30
- Journal Issue
- 12
- Series
- 20 refs, 20 figs, 5 tabs
- Journal Page Range
- p. 5595-5603
- ISSN
- 1738-494X
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 48049175
- Subject category
- S42: ENGINEERING;
- Descriptors DEI
- DEFORMATION; DESIGN; EFFICIENCY; ELASTICITY; NOISE; PUMPS; STRESSES; VERIFICATION
- Descriptors DEC
- EQUIPMENT; MECHANICAL PROPERTIES