Nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of profile error

Walha, Lassâad; Mohamed, Tounsi; Driss, Yassine; Chaari, Fakher; Fakhfakh, Tahar; Haddar, Mohamed

doi:10.1007/s11465-013-0254-x

Cited by 22 publications

(17 citation statements)

References 15 publications

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“…As for establishing dynamic model, lumped-parameter model is a simple, effective method which has been widely adopted. 3–15 The integrated lumped mass-spring damper (LMSD) model of cutting mechanism is shown in Figure 2. Mass distribution, flexibility of links and torsional, bending compliance of camshaft are taken into consideration.…”

Section: Dynamic Modelmentioning

confidence: 99%

“…Direct control of follower vibrations about a cam-follower mechanism is investigated by Gatti and Mundo, 5 the follower vibrations are significantly reduced by applying a direct secondary force on the follower. Nonlinear dynamic characteristics of a camrocker mechanism with profile error are studied in Lassaad et al; 6 in the dynamic model, it just considered the effects of contact stiffness and bearing stiffness. The profile error is assumed to be the form of sinusoidal and the influences are depicted by introducing an external force.…”

Section: Introductionmentioning

confidence: 99%

“…Many articles about dynamic problems of cam-linkage mechanisms have been published. In various literatures, 3–15 dynamic responses of cam-linkage mechanisms with system flexibility are investigated adopt the lumped parameter model. Yilmaz and Kocabas 2 studied the follower vibrations of cam mechanism with a distributed parameter model.…”

Section: Introductionmentioning

confidence: 99%

“…Nonlinear dynamic characteristics of a cam-rocker mechanism with profile error are studied in Lassaad et al. ; 6 in the dynamic model, it just considered the effects of contact stiffness and bearing stiffness. The profile error is assumed to be the form of sinusoidal and the influences are depicted by introducing an external force.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Dynamic analysis and optimization of cutting mechanism about aluminum electrolytic capacitor casing machine

Xia

Ren

Shang

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part K:

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The dynamic characteristics and optimization of a cutting mechanism about aluminum electrolytic capacitor casing machine were investigated with a lumped mass-spring damper model in this paper. In the lumped mass-spring damper model, compliance of the links and effects of mechanism position on deformable transfer relationship are taken into account. Besides, torsional and bending vibrations of camshaft are also considered. Cam profile is an important input excitation of the cutting mechanism and has important influence on the dynamic performance. Therefore, optimization of cam profile was also studied based on the dynamic model and B-spline. Acceleration fluctuations were significantly reduced after the optimization.

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Section: Dynamic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic analysis and optimization of cutting mechanism about aluminum electrolytic capacitor casing machine

Xia

Ren

Shang

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…Although the running speed of the camshaft would improve, unstable areas would occur and damping would affect the stability of the system. Lassaad and coworkers [9][10][11] studied the nonlinear dynamic features of the cam and swing lever mechanism by determining the influence of the stiffness of cam roller contact and bearing support in the established kinetic model. Moreover, the study analyzed the influence of the cam profile error on the kinematic parameters of the follower.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of CAM connecting rod system in high-speed drives based on dynamic characteristics and mathematical model

Shang

Xia

Ren

2017

Proceedings of the Institution of Mechanical Engineers, Part K:

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To explore the cause of structure vibration, this study aims to propose a kinematic equation and analyze its movement in relation to cam linkage mechanism for a jacketing machine and shearing mechanism. Finite element method is adopted to construct the kinetic model of linkage subsystem of shearing mechanism. This method can solve the inability of the shearing mechanism to accurately complete the shearing actions of the rubber hose during large vibration of the mechanism. Lumped parameter method is adopted to establish the kinetic model of the cam roller subsystem, and Newmark method is used to solve the kinetic equation of the shearing mechanism. The optimal parameters of the linking rod, cam profile, and shaking force and shaking moment of the mechanism at different rotation speeds are analyzed. Results show that rotation speed and cam profile are factors affecting the performance of the mechanism. The shaking force (shaking moment) is the main cause of the vibration of the mechanism on the rack. As such, the shaking force and shaking moment of the mechanism are selected as the objective functions of the optimization model. The node parameters of B-spline curve movement law and cross-section parameters of the linking rod are used as variables for the optimal design of the cam linkage system. Finally, the obtained optimal value is x ¼ [0.33 0.2 0.54 0.62 8.7 3.0 7.8 16.3] T .

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Bibliography

2016

Stochastic Dynamics of Structures

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Nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of profile error

Cited by 22 publications

References 15 publications

Dynamic analysis and optimization of cutting mechanism about aluminum electrolytic capacitor casing machine

Dynamic analysis and optimization of cutting mechanism about aluminum electrolytic capacitor casing machine

Design and optimization of CAM connecting rod system in high-speed drives based on dynamic characteristics and mathematical model

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