The Abnormal Vibration Source Analysis of Automobile Drive Axle

2012 ◽  
Vol 605-607 ◽  
pp. 1134-1137
Author(s):  
Chang Hai Yang ◽  
Nian Cheng Guo ◽  
Hai Sheng Song ◽  
Wen Ku Shi
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Rear Axle ◽  
Element Model ◽  
Source Analysis ◽  
Bench Test ◽  
Vibration Source ◽  
First Order ◽  
Drive Axle

Through a Transmission bench test of a certain automobile Drive axle Assembly ,the abnormal vibration in Rear axle can be found. This paper establishes three demensions modle and Finite element model of the Rear Drive axle Assembly and calculates the modal of the Assembly and Axle housing respectively. It can be found that the frequency of the abnormal vibration in the Rear axle Bench test Coincides with the frequence of the Assembly First-order bending.It presents that it is the Assembly Resonance that leads to the abnormal vibration of Rear axle,not just Axle housing Resonance

Investigation of Vibration for Vehicle Rear Axle Based on Modal Analysis

2012 ◽  
Vol 424-425 ◽  
pp. 646-649
Author(s):  
Wen Ku Shi ◽  
Nian Cheng Guo ◽  
Wen Jun Liu ◽  
Guang Ming Wu ◽  
Guo Lin Wang ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Rear Axle ◽  
3D Model ◽  
Element Model ◽  
Bench Test ◽  
Vibration Absorber ◽  
Vibration Modes ◽  
Assembly Result ◽  
Bending Mode

Abnormal vibration of a vehicle rear axle was detected during bench test. 3D model and finite element model of the rear axle were built and the vibration modes were computed. It was found that the frequency of abnormal vibration in the bench test just matched the frequency of the first bending mode of the rear axle assembly. Therefore it can be concluded that the resonance of rear axle assembly result in the abnormal vibration and some measures are necessary, such as strengthening the half-axle sleeve or installing vibration absorber

scholarly journals Design optimization of vehicle asynchronous motors based on fractional harmonic response analysis

2021 ◽  
Vol 12 (1) ◽  
pp. 689-700
Author(s):  
Ao Lei ◽  
Chuan-Xue Song ◽  
Yu-Long Lei ◽  
Yao Fu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Natural Frequency ◽  
Asynchronous Motor ◽  
Element Model ◽  
Design Parameters ◽  
Response Analysis ◽  
Harmonic Response ◽  
First Order ◽  
Harmonic Response Analysis

Abstract. To make vehicles more reliable and efficient, many researchers have tried to improve the rotor performance. Although certain achievements have been made, the previous finite element model did not reflect the historical process of the motor rotor well, and the rigidity and mass in rotor optimization are less discussed together. This paper firstly introduces fractional order into a finite element model to conduct the harmonic response analysis. Then, we propose an optimal design framework of a rotor. In the framework, objective functions of rigidity and mass are defined, and the relationship between high rigidity and the first-order frequency is discussed. In order to find the optimal values, an accelerated optimization method based on response surface (ARSO) is proposed to find the suitable design parameters of rigidity and mass. Because the higher rigidity can be transformed into the first-order natural frequency by objective function, this paper analyzes the first-order frequency and mass of a motor rotor in the experiment. The results proved that not only is the fractional model effective, but also the ARSO can optimize the rotor structure. The first-order natural frequency of asynchronous motor rotor is increased by 11.2 %, and the mass is reduced by 13.8 %, which can realize high stiffness and light mass of asynchronous motor rotors.

Stress-Strain Analysis of a Taper-Taper Adhesive-Bonded Joint Under Cylindrical Bending

1999 ◽  
Vol 121 (3) ◽  
pp. 374-380 ◽  
Author(s):  
Jack E. Helms ◽  
Chihdar Yang ◽  
Su-Seng Pang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Analytical Model ◽  
Plate Theory ◽  
Element Model ◽  
Variable Coefficients ◽  
Fortran Program ◽  
Cylindrical Bending ◽  
First Order ◽  
Bonded Joint

A model of a taper-taper adhesive-bonded joint under cylindrical bending has been derived using first-order laminated plate theory. Shear correction factors were used to account for transverse shear deformation. A FORTRAN program was written to integrate the resulting system of twelve simultaneous, linear, first-order, differential equations with variable coefficients. The Linear Shooting Method was used to solve the model. A finite element model was developed using the COSMOS/M commercial finite element package to verify the analytical model for a cross-ply laminate. The analytical model results agreed well with the finite element models and predicted peak adhesive stresses within about 2% of the finite element model.

Finite Element Analysis and Optimal Design of Commercial Vehicle Drive Axle Housing

2013 ◽  
Vol 816-817 ◽  
pp. 782-785 ◽  
Author(s):  
Bing Bing Zhou ◽  
Hui Lin Li ◽  
Qian Liu
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Commercial Vehicle ◽  
Element Model ◽  
Optimization Method ◽  
Bench Test ◽  
Dynamics Analysis ◽  
Element Analysis ◽  
Drive Axle ◽  
Drive Axle Housing

In order to solve the heavy mass problem of the commercial vehicle drive axle housing, the structure of axle housing is optimized with finite element method. At first, the parametric finite element model of axle housing is built by using ANSYS software, and the dynamic response characteristics of axle housing are obtained with transient dynamics analysis. The dynamic analysis results show that strength and stiffness of axle housing can satisfy design criteria very well. Then the fatigue life of axle housing are predicted based on the dynamics analysis, and results show that the fatigue dangerous regions occur on the spring seats. Finally, the structure optimization of axle housing is done aimed at lightweight with goal drive optimization method, and the fatigue life of optimized axle housing are verified with FEA and bench test. The results of verification by both FEA and test show that the optimized axle housing has apparent lightweight effects with its fatigue life meeting design requirements.

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