Modeling tangential friction based on contact pressure distribution for predicting dynamic responses of bolted joint structures

Li, Dongwu; Xu, Chao; Kang, Jiahao; Zhang, Zhishu

doi:10.1007/s11071-020-05765-6

Cited by 40 publications

(6 citation statements)

References 37 publications

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“…A bolt connection is a typical assembly connection, and the pressure distribution on the assembly surface is uneven. In this paper, the surface pressure distribution is extracted by the FEM 37 and fitted by a quartic polynomial. 29 A simplified three-dimensional (3D) finite element model is established to reduce the amount of calculation.…”

Section: Surface Pressure Distribution On Macro Scalementioning

confidence: 99%

A forward modeling method of assembly interface contact characteristics based on user-defined elements

Zhang

Sun

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The forward construction of the assembly interface model plays a fundamental role in the high-performance digital assembly model building. Aiming at the problem that it is difficult to accurately solve the interface thin-layer element parameters with dynamic inverse calculation method, a thin-layer element parameter modeling method based on multiscale morphology simulation is proposed. First, the user-defined elements (UEL) are developed, and its attribute parameters are continuously distributed in space. Then, the combination of macroscopic interface contact pressure and microscopic morphology realizes the efficient and accurate characterization of interface contact stiffness. On the macro scale, the pressure distribution characteristics of the assembly surface are extracted based on finite element theory. On the micro scale, the mapping relationship between the material properties of the thin-layer and the surface morphology is established based on fractal and Hertzian contact theory. Furthermore, the mapping relationship between the elastic modulus of the thin-layer element and the contact stiffness is established, which realizes the forward characterization of the interface contact characteristics. The equivalent model of the assembly interface is built according to the UEL and thin-layer theory. Finally, the dynamic experimental results are in good agreement with the simulation results, which verifies the effectiveness of the proposed modeling method. This study provides a basis for the forward modeling of assembly interface contact characteristics.

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Section: Surface Pressure Distribution On Macro Scalementioning

confidence: 99%

A forward modeling method of assembly interface contact characteristics based on user-defined elements

Zhang

Sun

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…Taking into account the dissipation of the dynamical system, the linear viscous damping term is added. The equation of motion can be expressed as 4 𝑤 ∂𝑥 4 = 𝜌𝐴𝑎 e cos (Ω𝑡) + 𝑇(𝑡)…”

Section: 21model Description and Equation Of Motionmentioning

confidence: 99%

“…Linear dynamic models can be used only for small deformations with small amplitude vibrations or the inapparent nonlinear characteristics. More often, nonlinear dynamic models must be used to describe many practical situations, such as thin plate buckling problems [1], hysteresis effects from nonlinear constitutive relation [2], contact nonlinearity in bolted structures [3,4], and geometric nonlinearity from large deflection beams [5]. Nonlinear systems typically exhibit complex mechanical behaviour, such as the dependency of the natural frequency and dissipation with the input excitation amplitude, discontinuities in the frequency response function, and multi-harmonic response via a single harmonic *Corresponding author, E-mail: yzhao@dlut.edu.cn random vibrations, it will be a very interesting topic.…”

Section: Introductionmentioning

confidence: 99%

A Volterra-PEM approach for random vibration spectrum analysis of nonlinear systems

Zhao

2022

Preprint

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Based on Volterra series theory, a Volterra-pseudo excitation method (Volterra-PEM) is developed to compute the response power spectral density (PSD) for nonlinear systems under random excitation. Firstly, within the framework of Volterra series theory, an improved pseudo excitation method (PEM) is established for multi-dimensional power spectral density (MPSD) analysis of nonlinear systems. As a generalized PEM for linear random vibration analysis, the Volterra-PEM is used to analyse the response MPSD, which also has a very concise expression. Secondly, in the case of computation difficulties when multi-dimensional integrating from MPSD to PSD, the computational efficiency is improved by converting the multi-dimensional integral into a matrix operation. Finally, as numerical examples, the Volterra-PEM is used to estimate the response PSD for stationary random vibration of a nonlinear spring-damped oscillator and a non-ideal boundary beam with geometrical nonlinearity. Compared with Monte Carlo simulation (MCS), the results show that the proposed method can predict the response PSD for nonlinear systems quickly and accurately under appropriate excitation intensities.

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“…In recent years, the dynamic responses of bolted joint structures have been extensively studied, especially on the description of the tangential friction behavior at contact surfaces, from stiffness softening [ [8] , [9] , [10] , [11] , [12] ], the nonlinear modeling of tangential stiffness [ [13] , [14] , [15] , [16] ], and the physical modeling based on the interface topography [ [17] , [18] , [19] , [20] ]. Considering the inconsistency between the scales related to the energy dissipation and the overall structure, Daniel J. Segalman [ 21 ] based on the experimental values in Iwan's framework [ 22 ], presented a four-parameter Iwan model to reproduce an experimentally observed power-law relation between the energy dissipation per cycle and the amplitude of applied loads in case of small amplitude oscillatory loads.…”

Section: Introductionmentioning

confidence: 99%

A methodology for energy dissipation prediction of the bolt group with non-uniform preload

Sun

Sun²,

Zhao³

et al. 2023

Heliyon

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Modeling tangential friction based on contact pressure distribution for predicting dynamic responses of bolted joint structures

Cited by 40 publications

References 37 publications

A forward modeling method of assembly interface contact characteristics based on user-defined elements

A forward modeling method of assembly interface contact characteristics based on user-defined elements

A Volterra-PEM approach for random vibration spectrum analysis of nonlinear systems

A methodology for energy dissipation prediction of the bolt group with non-uniform preload

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