PSI - Issue 42

Omar D. Mohammed et al. / Procedia Structural Integrity 42 (2022) 1607–1618 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

1615

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Table 4: Stress results of two stiffness cases of Gear1-Ring engagement on the drive flank, design A_G1-D (L1). Max. torque (Nm) Misalig. (mm) Max. contact (MPa) Max. root bending G1 (MPa)

Max. root bending ring (MPa)

stiff. 0 1000 stiff. 90 1000

-0.0062 0.0131

2058 2216

1115.1 1080.9

1238.7

1207

Fig.6 Contact stress distribution. a. drive flank of Gear 1, b. coast flank of Gear 1, c. drive flank of Gear 2.

Fig.7 Two positions of ring gear, a. 0 o , b. 90 o .

Fig.8 PPTE of two ring gear positions 0 o and 90 o .

In this way, the cumulative damage of each Gear1, Gear2 and Ring Gear can be obtained for bending and contact, as illustrated in Fig.10. To check the status of any design and to assess if the designed gear will survive, safety factors