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Author:

Nie, Songlin (Nie, Songlin.) (Scholars:聂松林) | He, Hao (He, Hao.) | Ji, Hui (Ji, Hui.) | Nie, Shuang (Nie, Shuang.) | Yan, Xiaopeng (Yan, Xiaopeng.) | Yin, Fanglong (Yin, Fanglong.)

Indexed by:

EI Scopus SCIE

Abstract:

The auxiliary support structure is used to prevent the cylinder block from tilting in seawater hydraulic axial piston pump (SHAPP). The failure modes of auxiliary support bearing and shaft under different material combinations were compared. Experimental results show that improper design of radius fitting clearance in auxiliary support bearing/shaft tribopair will seriously affect the normal operation of SHAPP and even lead to its damage. Based on the inertia force, nonlinear water film force and dynamic load balance of the rotating cylinder block, the mathematical model of the nonlinear shaft centerline orbit of the auxiliary support bearing was established. The nonlinear shaft centerline orbit of auxiliary support bearing in the cylinder block bore during SHAPP operation is analyzed accurately. Simultaneously, the water film pressure field under different radius fitting clearance is simulated and the range of the optimal value is determined. The running-in experiment of SHAPP is carried out under the optimum clearance of the auxiliary support bearing/shaft tribopair. The results show that the SHAPP can run normally and the performance is obviously improved without the wear on the friction pair surfaces. Therefore, the proposed method has provided the guidance reference for the design of auxiliary support bearing in SHAPP.

Keyword:

Seawater hydraulic axial piston pump Dynamic characteristics Nonlinear shaft centerline orbit Fitting clearance Auxiliary support bearing shaft

Author Community:

  • [ 1 ] [Nie, Songlin]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 2 ] [He, Hao]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 3 ] [Ji, Hui]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 4 ] [Yan, Xiaopeng]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 5 ] [Yin, Fanglong]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 6 ] [Nie, Shuang]Univ Toronto, Fac Appl Sci & Engn, Toronto, ON M5S 34G, Canada

Reprint Author's Address:

  • [Ji, Hui]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China;;

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Source :

ENGINEERING FAILURE ANALYSIS

ISSN: 1350-6307

Year: 2023

Volume: 146

4 . 0 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count: 8

SCOPUS Cited Count: 12

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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