A fretting test apparatus for measuring friction hysteresis of bolted joints

Li, Dongwu; Xu, Chao; Botto, Daniele; Zhang, Zhishu; Gola, Muzio

doi:10.1016/j.triboint.2020.106431

Cited by 42 publications

(14 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The thread is applied at the nut, and the diameter of holes on the jointed plates is larger than that of the screw [ 16 , 28 ]. The established high-quality models of the bolt and nut are shown in Figure 6 .…”

Section: Calculation and Analysismentioning

confidence: 99%

Finite Element Analysis of Elastoplastic Elements in the Iwan Model of Bolted Joints

et al. 2022

View full text Add to dashboard Cite

The Iwan model is composed of elastoplastic elements and is widely used to represent the stiffness degradation of bolted joints under mixed-mode loading (normal and tangential loading). The latest static methods of parameter identification established the relationship between the elastoplastic elements and the contact pressure under normal loading. Under mixed-mode loading, the parameters of the Iwan model are dynamic for the evolution of contact conditions. Therefore, static parameter identification methods are not suitable for the dynamic Iwan model. A new technique was proposed to identify the parameters of the elastoplastic elements in this paper. Firstly, several different finite element models were established. The influence of the contact method and the thread structure were analyzed, and a reliable and efficient bolted-joint modeling method was proposed. Secondly, the evolution of contact conditions was studied. The dynamic elliptical contact model and the ellipticity discrete method were proposed. Finally, the residual stiffness of the Iwan model was analyzed to establish the mapping between the residual stiffness and the bending of the screw. The results can provide a technique for identifying the parameters of the dynamic Iwan model.

show abstract

Section: Calculation and Analysismentioning

confidence: 99%

Finite Element Analysis of Elastoplastic Elements in the Iwan Model of Bolted Joints

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The detailed formulation of this 3D node-to-node contact elements can be found in [21,26]. There are also many friction rigs that are used to experimentally identify related contact parameters [9,10,18].…”

Section: D Node-to-node Contact Modelmentioning

confidence: 99%

On an improved adaptive reduced-order model for the computation of steady-state vibrations in large-scale non-conservative systems with friction joints

et al. 2020

View full text Add to dashboard Cite

Joints are commonly used in many largescale engineering systems to ease assembly, and ensure structural integrity and effective load transmission. Most joints are designed around friction interfaces, which can transmit large static forces, but tend to introduce stick-slip transition during vibrations, leading to a nonlinear dynamic system. Tools for the complex numerical prediction of such nonlinear systems are available today, but their use for large-scale applications is regularly prevented by high computational cost. To address this issue, a novel adaptive reduced-order model (ROM) has recently been developed, significantly decreasing the computational time for such high fidelity simulations. Although highly effective, significant improvements to the proposed approach is presented and demonstrated in this paper, further increasing the efficiency of the ROM. An energy-based error estimator was developed and integrated into the nonlinear spectral analysis, leading to a significantly higher computational speed by removing insignificant static modes from the stuck contact nodes in the original reduced basis, and improving the computational accuracy by eliminating numerical noise. The effectiveness of the new approach was shown on an industrial

show abstract

“…Connected members are brought into contact by bolt preload and transmit tangential loads by dry friction. The bolted connection exhibits nonlinear hysteresis characteristics under the tangential friction [ 1 , 2 ], in which the energy dissipation of the bolted connection accounts for more than 90% of structural energy loss [ [3] , [4] , [5] , [6] , [7] ]. The evolution of the tangential behavior of the bolted connection will directly affect the overall structure's performance.…”

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

View full text Add to dashboard Cite

A fretting test apparatus for measuring friction hysteresis of bolted joints

Cited by 42 publications

References 21 publications

Finite Element Analysis of Elastoplastic Elements in the Iwan Model of Bolted Joints

Finite Element Analysis of Elastoplastic Elements in the Iwan Model of Bolted Joints

On an improved adaptive reduced-order model for the computation of steady-state vibrations in large-scale non-conservative systems with friction joints

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

Contact Info

Product

Resources

About