자동차 파워트레인 소음 및 진동(TM, AXLE)

소개글

자동차 파워트레인(TM, AXLE)에 대한 소음진동 이해

목차

1. Noise versus Sound
2. Gear Noise Type
3. Whine Noise
4. Gear Rattle

본문내용

Whine Noise

Mesh Frequency and harmonic
Profile excites
Ghost frequencies
May occur at both heavy and light loads

Rattle Noise

Externally excited (Engine)
Light load (idle rattle)
가/감속 rattle
No distinct frequencies

과거 Gear 설계 고려 사항
Gear Ratio, Gear Axis, Torque, Speed, Operating Time Schedule
Space Requirement, Power Source, Loading type,
Environmental Conditions, Quality Class, Lubrication Medium
Cooling and Lubrication Method
Gear Noise
Accuracy
고정도 Gear가 꼭 조용하지는 않음 (Helicopter Gear)
Noise를 Gear 설계에 고려해야 함
Gear 설계가 잘되었을 경우, Accuracy는 매우 중요

The Gear clashing frequency, tooth pass frequency
Number of teeth X shaft frequency
Mesh Frequency Harmonics
multiples of mesh frequency
Sideband Frequencies
occurs at fm + n x fs
Causes: runout, torsional vibrations

참고 자료

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