Design of generated axial force measurement tester for tripod constant velocity joints under shudder condition

This paper proposes an experimental and numerical study to reduce the generated axial force (GAF) in a tripod constant velocity joint (CVJ). Based on the GAF model developed through kinematic and frictional analysis on the tripod CVJ, the key parameters that have a significant influence on the GAF are obtained. These parameters vary with the design parameters of the CVJ and the optimal design parameter with the lowest GAF are presented. The GAF of a tripod CVJ is estimated by the developed model, with respect to various design parameters, and the results shows that track curvature highly affects the GAF whereas contact angle hardly affects the GAF. The GAF decreases with the decrease of track curvature, and the minimum GAF occurs at −20% track curvature and +20% contact angle.

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Analytical and experimental analysis of axial force generated by a drive shaft system

Proceedings of the Institution of Mechanical Engineers Part K Journal of Multi-body Dynamics ◽

10.1177/1464419320943396 ◽

2020 ◽

Vol 234 (4) ◽

pp. 691-706 ◽

Cited By ~ 1

Author(s):

Huayuan Feng ◽

Subhash Rakheja ◽

Wen-Bin Shangguan

Keyword(s):

Dynamic Model ◽

Axial Force ◽

Friction Model ◽

Drive Shaft ◽

Contact Model ◽

Model Parameters ◽

Shaft System ◽

Multibody Dynamic ◽

Generated Axial Force ◽

Operational Factors

The drive shaft system with a tripod joint is known to cause lateral vibration in a vehicle due to the axial force generated by various contact pairs of the tripod joint. The magnitude of the generated axial force, however, is related to various operating factors of the drive shaft system in a complex manner. The generated axial force due to a drive shaft system with a tripod joint and a ball joint was experimentally characterized considering ranges of operational factors, namely, the input toque, the shaft rotational speed, the articulation angle, and the friction. The data were analyzed to establish an understanding of the operational factors on the generated axial force. Owing to the observed significant effects of all the factors, a multibody dynamic model of the drive shaft system was formulated for predicting generated axial force under different operating conditions. The model integrated the roller–track contact model and the velocity-based friction model. Based on a quasi-static finite element model, a new methodology was proposed for identifying the roller–track contact model parameters, namely, the contact stiffness and force index. To further enhance the calculation accuracy of the multibody dynamic model, a new methodology for identifying the friction model parameters and the force index was proposed by using the measured data. The validity of the model was demonstrated by comparing the model-predicted and measured magnitudes of generated axial force for the ranges of operating factors considered. The results showed that the generated axial force of the drive shaft system can be calculated more accurately and effectively by using the identified friction and contact parameters in the paper.

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Axial force measurement of the bolt/nut assemblies based on the bending mode shape frequency of the protruding thread part using ultrasonic modal analysis

Measurement ◽

10.1016/j.measurement.2020.107914 ◽

2020 ◽

Vol 162 ◽

pp. 107914 ◽

Cited By ~ 2

Author(s):

Naoki Hosoya ◽

Takanori Niikura ◽

Shinji Hashimura ◽

Itsuro Kajiwara ◽

Francesco Giorgio-Serchi

Keyword(s):

Modal Analysis ◽

Axial Force ◽

Mode Shape ◽

Force Measurement ◽

Bending Mode

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Super harmonic nonlinear lateral vibrations of a segmented driveline incorporating a tuned damper excited by non-constant velocity joints

Journal of Sound and Vibration ◽

10.1016/j.jsv.2008.12.018 ◽

2009 ◽

Vol 323 (1-2) ◽

pp. 334-351 ◽

Cited By ~ 7

Author(s):

Michael Browne ◽

Alan Palazzolo

Keyword(s):

Constant Velocity ◽

Lateral Vibrations ◽

Constant Velocity Joints ◽

Tuned Damper

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Pile Model Tests Using Strain Gauge Technology

Studia Geotechnica et Mechanica ◽

10.1515/sgem-2015-0032 ◽

2015 ◽

Vol 37 (3) ◽

pp. 49-52 ◽

Cited By ~ 1

Author(s):

Adam Krasiński ◽

Tomasz Kusio

Keyword(s):

Bearing Capacity ◽

Axial Force ◽

Strain Gauge ◽

Force Measurement ◽

Ground Level ◽

Model Tests ◽

Scale Model ◽

Small Scale ◽

Pile Head ◽

Pile Model

Abstract Ordinary pile bearing capacity tests are usually carried out to determine the relationship between load and displacement of pile head. The measurement system required in such tests consists of force transducer and three or four displacement gauges. The whole system is installed at the pile head above the ground level. This approach, however, does not give us complete information about the pile-soil interaction. We can only determine the total bearing capacity of the pile, without the knowledge of its distribution into the shaft and base resistances. Much more information can be obtained by carrying out a test of instrumented pile equipped with a system for measuring the distribution of axial force along its core. In the case of pile model tests the use of such measurement is difficult due to small scale of the model. To find a suitable solution for axial force measurement, which could be applied to small scale model piles, we had to take into account the following requirements: - a linear and stable relationship between measured and physical values, - the force measurement accuracy of about 0.1 kN, - the range of measured forces up to 30 kN, - resistance of measuring gauges against aggressive counteraction of concrete mortar and against moisture, - insensitivity to pile bending, - economical factor. These requirements can be fulfilled by strain gauge sensors if an appropriate methodology is used for test preparation (Hoffmann [1]). In this paper, we focus on some aspects of the application of strain gauge sensors for model pile tests. The efficiency of the method is proved on the examples of static load tests carried out on SDP model piles acting as single piles and in a group.

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