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CSME 2020/02
Volume 41 No.1
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1-10
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Strength And Reliability Analyses For A Small Teeth Difference Mechanism Based On FEA
Yuo-Tern Tsaia, Kuo-Shong Wangb and Kuan-Hong Linc
aDepartment of Mechanical Engineering, Hungkuo Delin University of Technology, 236, Taiwan, R.O.C.
bDepartment of Mechanical Engineering, National Central University, Chungli, Taiwan, ROC.
cDepartment of Mechanical Engineering, Tungnan University, 222, Taiwan, R.O.C.
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Abstract:
Speed-reduced mechanisms designed with small teeth difference (STD) possess many excellent features such as small volume, compact structure, and high reduced ratios, etc. This paper presents the designed methods of STD mechanisms including interference analysis and stress evaluation of the paired gears. The interference conditions are investigated for giving proper shifting amounts for the gears to avoid meshing interferences. The geometric models of a STD mechanism are created using CAD software for performing interference analysis and stress evaluation. The stresses of the gear sets are simulated using Finite Element Analysis (FEA). An evaluated procedure of stress variations is proposed. The reliabilities of the mechanism are further rated according to the analyzed stresses so that the allowed loads can be decided accordingly. The study is useful in structural design, stress analysis and reliability evaluation for a reducer designed with involute gears.
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Keywords: speed-reduced mechanism, design, stress analysis, reliability.
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*Corresponding author; e-mail: yttsai@mail.hdut.edu.tw
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©
2020
CSME , ISSN 0257-9731
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