Study on the dynamic performance of tilt rotor supported by spherical roller bearings

Yang, Jiapeng; Zeng, Hua Rong; Zhu, Tongqing; An, Qi

doi:10.1177/1464419316655956

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…R y is the equivalent radius of the contact point perpendicular to the rolling direction of the roller. The principal radii of spherical roller of contact in xy and xz planes are ρ I = The oil film stiffness of the first and second column of roller j is (Yang et al, 2016): …”

Section: Stiffness and Damping At Left Supporting Pointmentioning

confidence: 99%

“…cos ϕ 1j cos α 1j , the damping in the first row of the bearing's roller j between inner raceway and outer raceway can be obtained (Yang et al, 2016;Hamrock and Dowson, 1981): . (22) According to damping series relation of bearing, the comprehensive damping in first row of the bearing at roller j is:…”

Section: J Yang Et Al: Study On the Dynamic Performance Of Concretementioning

confidence: 99%

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Study on the dynamic performance of concrete mixer's mixing drum

et al. 2017

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Abstract. When working, the geometric distribution shape of concrete in concrete mixing truck's rotary drum changes continuously, which cause a great difficulty for studying the dynamic performance of the mixing drum. In this paper, the mixing system of a certain type of concrete mixing truck is studied. A mathematical formulation has been derived through the force analysis to calculate the supporting force. The calculation method of the concrete distribution shape in the rotary drum is developed. A new transfer matrix is built with considering the concrete geometric distribution shape. The effects of rotating speed, inclination angle and concrete liquid level on the vibration performance of the mixing drum are studied with a specific example. Results show that with the increase of rotating speed, the vibration amplitude of the mixing drum decreases. The peak amplitude gradually moves to the right with the inclination angle increasing. The amplitude value of the peak's left side decreases when tilt angle increases, while the right side increases. The maximum unbalanced response amplitude of the drum increases with the decrease of concrete liquid level height, and the vibration peak moves to the left.

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Section: Stiffness and Damping At Left Supporting Pointmentioning

confidence: 99%

Section: J Yang Et Al: Study On the Dynamic Performance Of Concretementioning

confidence: 99%

Study on the dynamic performance of concrete mixer's mixing drum

et al. 2017

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Calculating method of the fatigue life for the main supporting bearing of mixing drum in concrete mixing truck when considering drum’s vibration

Yang

2018

Proceedings of the Institution of Mechanical Engineers, Part K:

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It has been observed that there are many studies focusing on the vibration properties of bearings caused by manufacturing errors, assembly related errors, out-of-balance rotor rotation, cage instability, etc. But there are fewer research studies on the effect of rotor’s vibration on double-row rolling element bearings’ mechanical properties. In this paper, a calculating method has been established for bearing’s roller load and fatigue life when considering rotor’s vibration. And this model is applied to study the main supporting bearing of the mixing drum of a certain type of concrete mixing truck with the consideration of the mixing drum’s vibration. The effects of rotating speed, inclination angle, concrete liquid level, and rolling wheels’ supporting position on the roller load and bearing’s fatigue life are studied with a specific example with and without considering the mixing drum’s vibration. Results show that with the increase in the rotating speed, the bearing roller’s maximum load decreases, while the fatigue life of main supporting bearing increases. With the decrease of the concrete liquid level, there is increase in the inclination angle and the movement of rolling wheel from left to right, and the bearing roller’s maximum load increases, while the fatigue life of main supporting bearing decreases. The changes of the mixing drum’s inclination angle have tremendous effect on bearing’s fatigue life, while the change in the rolling wheel’s supporting position has little influence on the fatigue life of the main supporting bearing. When considering the mixing drum’s vibration, the roller’s maximum load is larger than that without considering mixing drum’s vibration, while the fatigue life of the main supporting bearing is shorter than that without considering mixing drum’s vibration.

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Study on the dynamic performance of tilt rotor supported by spherical roller bearings

Cited by 2 publications

References 24 publications

Study on the dynamic performance of concrete mixer's mixing drum

Study on the dynamic performance of concrete mixer's mixing drum

Calculating method of the fatigue life for the main supporting bearing of mixing drum in concrete mixing truck when considering drum’s vibration

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