Nonlinear vibration analysis of pipeline considering the effects of soft nonlinear clamp

Cao, Yiming; Guo, Xumin; Ma, Hui; Wen, Bo; Wang, Bo

doi:10.1007/s10483-022-2903-7

Cited by 17 publications

(2 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The studies on metal rubber have been very mature, but the soft nonlinear characterization of metal rubber clamps in pipeline system is rarely studied. People have done a lot of researches on soft nonlinear system actually [23][24][25][26][27]. Sun et al [23,24] established a semi-analytical model to simulate the soft nonlinear of bolted thin plate, and used the Incremental Harmonic Balance method (IHB) to solve its nonlinear vibration response.…”

Section: Introductionmentioning

confidence: 99%

“…Tang et al [25] used the dynamic stiffness method to study the dynamic behavior of system with soft nonlinear, and identified the cubic nonlinear stiffness using nonlinear jumping phenomenon. Chen et al [27] established a dynamic pipeline model with soft nonlinear support, but the model is very simple and only considers one degree of freedom, and lacks experimental verification, which cannot meet the engineering requirements. Therefore, this paper proposed a nonlinear clamp-pipeline model with four degrees of freedom, which is in good agreement with experiment and meets the engineering demand.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic modeling and vibration response experiment of clamp-pipeline system with soft nonlinearity

Cao

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

As an important supporting component, metal rubber clamp often generates nonlinear force and brings complex dynamics to pipeline system. However, the nonlinear of metal rubber clamps in pipeline system has been rarely incorporated in the open research. Therefore, based on genetic algorithm and finite element method, a new nonlinear clamp model with four degrees of freedom is proposed by introducing identified nonlinear parameters. The nonlinear parameters are identified by genetic algorithm in which the objective function is the error between experiment and simulation, and the nonlinear clamp-pipeline model is verified by modal test and vibration response experiment under different boundary conditions. The results show the numerical results are basically consistent with the experimental results. Moreover, the effects of clamp nonlinear stiffness coefficient, nonlinear damping coefficient, and excitation amplitude on vibration response of pipeline system are analyzed. The developed model can consider the nonlinear effect of pipeline system, so as to predict the vibration response more accurately.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic modeling and vibration response experiment of clamp-pipeline system with soft nonlinearity

Cao

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Adjacent mode resonance of a hydraulic pipe system consisting of parallel pipes coupled at middle points

Fan

Zhu

Mao

et al. 2023

Appl. Math. Mech.-Engl. Ed.

View full text Add to dashboard Cite

Dynamic modeling of fluid-conveying pipes restrained by a retaining clip

Dou¹,

Ding²,

Mao³

et al. 2023

Appl. Math. Mech.-Engl. Ed.

View full text Add to dashboard Cite

Although most pipes are restrained by retaining clips in aircrafts, the influence of the clip parameters on the vibration of the fluid-conveying pipe has not been revealed. By considering the clip width, a new dynamic model of a fluid-conveying pipe restrained by an intermediate clip is established in this paper. To demonstrate the necessity of the proposed model, a half pipe model is established by modeling the clip as one end. By comparing the two models, it is found that the half pipe model overestimates the critical velocity and may estimate the dynamical behavior of the pipe incorrectly. In addition, with the increase in the clip stiffness, the conversion processes of the first two modes of the pipe are shown. Furthermore, by ignoring the width of the clip, the effect of the flow velocity on the accuracy of a concentrated restraint clip model is presented. When the flow velocity is close to the critical velocity, the accuracy of the concentrated restraint clip model significantly reduces, especially when the width of the clip is large. In general, the contribution of this paper is to establish a dynamic model of the fluid-conveying pipe which can describe the influence of the clip parameters, and to demonstrate the necessity of this model.

show abstract

Nonlinear vibration analysis of pipeline considering the effects of soft nonlinear clamp

Cited by 17 publications

References 36 publications

Dynamic modeling and vibration response experiment of clamp-pipeline system with soft nonlinearity

Dynamic modeling and vibration response experiment of clamp-pipeline system with soft nonlinearity

Adjacent mode resonance of a hydraulic pipe system consisting of parallel pipes coupled at middle points

Dynamic modeling of fluid-conveying pipes restrained by a retaining clip

Contact Info

Product

Resources

About