Damping at Metallic Interfaces Subjected to Oscillating Tangential Loads

Rogers, Paul; Boothroyd, G.

doi:10.1115/1.3438660

Cited by 40 publications

(22 citation statements)

References 5 publications

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“…At very small displacements, i.e., in the pre-sliding regime, different researchers found a displacement dependent friction force [9,29,30]. The displacement dependency is a hysteresis function with nonlocal memory.…”

Section: Pre-sliding Hysteresismentioning

confidence: 99%

A Novel Generic Model at Asperity Level for Dry Friction Force Dynamics

2004

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This paper presents a theoretical model for (dry, low-velocity, wear-less) friction force dynamics based on asperity interaction considerations subject to the phenomenological mechanisms of creep/relaxation, adhesion and (elasto-plastic) deformation in their most generalized forms. The model simulates the interaction of a large population of idealised, randomly distributed asperities with arbitrarily chosen geometrical and elastic properties. Creep and adhesion are simulated by an expedient local coefficient of friction that increases with time of contact, while deformation effects are accounted for by rate-independent hysteresis losses occurring in the bulk of the material of an asperity that is breaking loose. An energy method is adopted to calculate the instantaneous, local friction force leading to better insight into the problem as well as higher numerical efficiency. The results obtained by this model show both qualitative and quantitative agreement with the known types and facets of friction force dynamic behaviour; in particular, pre-sliding quasi time-independent frictional hysteresis in the displacement, velocity weakening, slider ''lift-up'' effect and frictional lag, in addition to the influence of the various process parameters, all in a single formulation, such as no extant friction model could show before. Moreover, the model is still open for and capable of further refinement and elaboration so as to incorporate local inertia and viscous effects and thus to be extended to include velocity strengthening and lubricated rough contacts.

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Section: Pre-sliding Hysteresismentioning

confidence: 99%

A Novel Generic Model at Asperity Level for Dry Friction Force Dynamics

2004

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“…The restoring force of a hysteretic system depends not only on the instantaneous displacement, but also on its past history. The bilinear model proposed by Rogers and Boothroyd [11] is modified and used for wire bonder application in this paper. For the wire bonding process, a lumped microslip model is proposed, which is shown in Fig.…”

Section: Hysteric Systemmentioning

confidence: 99%

A microslip model of the bonding process in ultrasonic wire bonders Part I: Transient response

Guo

et al. 2006

Int J Adv Manuf Technol

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Ultrasonic wire bonders with precision capillary tips are widely used for bonding electrical wires to IC chips and circuits. The industry is driving wire-bonding technology towards increased yields, decreased pitch, and ever decreasing cost. However, many technical and material issues will be involved in achieving these goals, such as bond quality monitoring, new failure modes, reliability problems in new plastic mold compounds, and increasing wire sweep problems, in particular lack of the quantitative understanding and validated mathematical model of the bonding process. In this paper, a microslip model is proposed for the bonding process based on the bonding pattern observed, i.e. the wire is bonded at the periphery while the centre is left unbonded. A bilinear hysteresis restoring force is assumed in the microslip model because of its simplicity. The transient displacement response is calculated, and its pattern shows very good agreement with the experiment.

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“…Several papers have reported on modeling the stiffness and damping characteristics of machine joints [15][16][17][18]. Substructure synthesis methods [19] and impedance coupling methods [20] have been developed and used extensively in the dynamic analysis of assembled structures.…”

Section: Introductionmentioning

confidence: 99%

An approach to evaluate the effects of nonlinear traveling joints on dynamic behavior of large machine tools

Ding

Huang

Wang

et al. 2013

Int J Adv Manuf Technol

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In order to select the best possible design from various candidates based on structure configurations of traveling components, it is essential to evaluate the effects of traveling joints on dynamic behavior of large machine tools. Firstly, regression analysis and energy method were used to determine the nonlinear parameters of the metal-plastic joints. Then, a nonlinear receptance coupling approach was used to establish a simplified model of a large machine tool including nonlinear joints. The evaluations of the large machine tool were analyzed with different milling forces. The results show that the nonlinearity of traveling joints significantly influences the resonant frequency and the response amplitudes. Experimental verifications were performed on a prototype of a large machine tool for milling large gears.

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Damping at Metallic Interfaces Subjected to Oscillating Tangential Loads

Cited by 40 publications

References 5 publications

A Novel Generic Model at Asperity Level for Dry Friction Force Dynamics

A Novel Generic Model at Asperity Level for Dry Friction Force Dynamics

A microslip model of the bonding process in ultrasonic wire bonders Part I: Transient response

An approach to evaluate the effects of nonlinear traveling joints on dynamic behavior of large machine tools

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