[미국특허]
Damped propshaft assembly and method for fabricating a damped propshaft assembly
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16C-003/02
F16F-015/14
B60K-017/22
F16F-015/32
출원번호
US-0470091
(2014-08-27)
등록번호
US-9175718
(2015-11-03)
발명자
/ 주소
Ley, Jason
Sun, Zhaohui
Braun, William
Nyquist, Jeffrey P.
Voight, Michael A.
출원인 / 주소
American Axle & Manufacturing, Inc.
대리인 / 주소
Harness, Dickey & Pierce, P.L.C.
인용정보
피인용 횟수 :
0인용 특허 :
45
초록▼
A damped propshaft assembly with a hollow shaft and a tuned damper, which is received in the hollow shaft and includes a liner and a damping member. The liner's mass and stiffness are tuned to attenuate one or more of a bending mode vibration and a torsion mode vibration that occurs at a first prede
A damped propshaft assembly with a hollow shaft and a tuned damper, which is received in the hollow shaft and includes a liner and a damping member. The liner's mass and stiffness are tuned to attenuate one or more of a bending mode vibration and a torsion mode vibration that occurs at a first predetermined frequency. The liner is not configured to substantially damp shell mode vibration that occurs at a frequency that is not equal to the first predetermined frequency. The damping member is coupled to the liner and is configured to primarily attenuate shell mode vibration in the hollow shaft at one or more desired frequencies. The tuned damper attenuates the at least one of the bending moment vibration and the torsion mode vibration at the first predetermined frequency and also attenuates shell mode vibration. A method for forming a damped propshaft assembly is also provided.
대표청구항▼
1. A damped propshaft assembly comprising: a hollow shaft; anda tuned damper received in the hollow shaft and having a liner and a damping member, the liner having a mass and a stiffness that are tuned to attenuate one or more of a bending mode vibration and a torsion mode vibration that occurs at a
1. A damped propshaft assembly comprising: a hollow shaft; anda tuned damper received in the hollow shaft and having a liner and a damping member, the liner having a mass and a stiffness that are tuned to attenuate one or more of a bending mode vibration and a torsion mode vibration that occurs at a first predetermined frequency, the liner not being configured to substantially damp shell mode vibration that occurs at a frequency that is not equal to the first predetermined frequency, the damping member being coupled to the liner, the damping member being configured to primarily attenuate shell mode vibration in the hollow shaft at one or more desired frequencies;wherein the tuned damper attenuates the at least one of the bending moment vibration and the torsion mode vibration at the first predetermined frequency and also attenuates shell mode vibration. 2. The damped propshaft assembly of claim 1, wherein the intermediate damper is not configured to substantially damp shell mode vibration occurring at a frequency that is less than or equal to 1000 Hz. 3. The damped propshaft assembly of claim 1, wherein the damping member provides broadband damping. 4. The damped propshaft assembly of claim 3, wherein the broadband damping includes damping of shell mode vibration and damping of bending mode vibration at a plurality of frequencies. 5. The damped propshaft assembly of claim 3, wherein the damping member is a resistive absorber. 6. The damped propshaft assembly of claim 3, wherein the liner is configured to contact an inside surface of the hollow shaft over a first area, wherein the damping member is configured to contact the inside surface of the hollow shaft over a second area, and wherein a ratio of first area to the second area is less than or equal to five (5) percent. 7. The damped propshaft assembly of claim 6, wherein the ratio of the first area to the second area is less than or equal to two and one-half (2.5) percent. 8. The damped propshaft assembly of claim 7, wherein the ratio of the first area to the second area is less than or equal to one and one-quarter (1.25) percent. 9. The damped propshaft assembly of claim 3, wherein the damping member includes at least one contact member that is configured to contact an inside surface of the hollow shaft and wherein the damping member has a durometer of between 40 Shore A and 80 Shore A. 10. A method for manufacturing a shaft assembly for a driveline system, the driveline system including a first driveline component and a second driveline component, the shaft assembly being adapted to transmit torque between the first driveline component and the second driveline component, the method comprising: providing a hollow shaft;providing a tuned damper, the tuned damper comprising an intermediate damper and a damping member, the intermediate damper comprising at least one liner whose mass and/or a stiffness is tuned to attenuate one or more of a bending moment vibration and a torsion mode vibration that occurs at a first predetermined frequency, the at least one liner not being configured to substantially damp shell mode vibration that occurs at a frequency that is not equal to the first predetermined frequency, the damping member being coupled to the intermediate damper to form the tuned damper, the damping member being configured to primarily attenuate shell mode vibration at one or more desired frequencies, the tuned damper attenuating the at least one of the bending moment vibration and the torsion mode vibration at the first predetermined frequency and also attenuating shell mode vibration; andinstalling the tuned damper into the hollow shaft. 11. The method of claim 10, wherein the intermediate damper is not configured to substantially damp shell mode vibration occurring at a frequency that is less than or equal to 1000 Hz. 12. The method of claim 10, wherein the damping member provides broadband damping. 13. The method of claim 12, wherein the broadband damping includes damping of shell mode vibration and damping of bending mode vibration at a plurality of frequencies. 14. The method of claim 12, wherein the damping member is a resistive absorber. 15. The method of claim 12, wherein the intermediate damper is configured to contact an inside surface of the hollow shaft over a first area, wherein the damping member is configured to contact the inside surface of the hollow shaft over a second area, and wherein a ratio of first area to the second area is less than or equal to five (5) percent. 16. The method of claim 15, wherein the ratio of the first area to the second area is less than or equal to two and one-half (2.5) percent. 17. The method of claim 16, wherein the ratio of the first area to the second area is less than or equal to one and one-quarter (1.25) percent. 18. The method of claim 12, wherein the damping member includes at least one contact member that is configured to contact an inside surface of the hollow shaft and wherein the damping member has a durometer of between 40 Shore A and 80 Shore A. 19. A method for manufacturing a shaft assembly for a driveline system, the driveline system including a first driveline component and a second driveline component, the shaft assembly being adapted to transmit torque between the first driveline component and the second driveline component, the method comprising: providing a hollow shaft;providing a tuned damper comprising at least one liner and a damping member, the at least one liner forming a tuned reactive absorber for attenuating at least one of bending mode vibrations and torsion mode vibrations at a first predetermined frequency, the tuned reactive absorber not being configured to substantially damp shell mode vibration that occurs at a frequency that is not equal to the first predetermined frequency, the damping member being coupled to the at least one liner to form the tuned damper, the tuned damper being the tuned reactive absorber that is configured to attenuate the at least one of the bending mode vibrations and the torsion mode vibrations, the tuned damper also being a multi-mode, multi-frequency resistive absorber that is configured to attenuate shell mode vibrations; andinserting the tuned damper into the shaft member. 20. The method of claim 19, wherein prior to coupling the damping member to the at least one liner, the at least one liner is not configured to substantially damp shell mode vibration occurring at a frequency that is less than or equal to 1000 Hz. 21. The method of claim 19, wherein the at least one liner is configured to contact an inside surface of the hollow shaft over a first area, and wherein the damping member is configured to contact the inside surface of the hollow shaft over a second area, and wherein a ratio of first area to the second area is less than or equal to five (5) percent. 22. The method of claim 21, wherein the ratio of the first area to the second area is less than or equal to two and one-half (2.5) percent. 23. The method of claim 22, wherein the ratio of the first area to the second area is less than or equal to one and one-quarter (1.25) percent. 24. The method of claim 19, wherein the at least one damping member has a durometer of between 40 Shore A and 80 Shore A.
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