Vibration-Assisted Friction Control in Material Interactions

Vibration‐assisted friction control encompasses techniques that employ mechanical oscillations to modulate and often reduce the resistance encountered at interfaces between contacting solids. By introducing controlled oscillatory motion—whether normal to the surface, parallel to the sliding direction or in transverse modes—the effective coefficient of friction can be diminished. This reduction arises from intermittent loss of contact, rapid micro-slip events, altered contact stiffness and dynamic interfacial separation. The approach has been studied in contexts ranging from precision machining and drilling to micro‐ and mesoscale manipulation, offering advantages in wear reduction, energy saving and process reliability. Theoretical frameworks describe friction under oscillation in terms of dimensionless velocity and amplitude parameters, system and contact stiffness ratios and modal excitation effects. Experimentally, ultrasonic or low-frequency vibrations have been shown to suppress stick-slip, to control non-prehensile transport of parts on oscillating platforms and to enhance powder flow by lowering adhesive forces. Collectively, these findings establish vibration‐assisted methods as a versatile tool for tailoring interfacial behaviour with global relevance in manufacturing, robotics, drilling and materials handling.

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Recent studies have demonstrated that high-frequency longitudinal tangential vibrations can markedly reduce friction forces in sliding pairs composed of steel, cast iron and polymeric materials. By characterising contact compliance as a function of normal pressure and surface roughness, researchers identified the conditions under which friction reduction is maximised for given amplitudes and frequencies of vibration.

Advances in contact-mechanical modelling have produced a unified macroscopic description of static and dynamic friction under normal, tangential and transverse oscillations. Incorporating contact stiffness in both directions and Amontons’ law, this framework reconciles diverse experimental observations and predicts frictional behaviour across a wide range of oscillatory modes and system stiffness ratios.

Finite element and experimental investigations into shaft–hub connections have shown that impact-induced vibrations excite natural modes of the assembly, temporarily lowering frictional resistance and transmittable torque. This work highlights the dual role of modal excitation and local deformation in vibration-assisted friction control and suggests design strategies for assemblies requiring controlled engagement and disengagement.

Vibration-Assisted Friction Control in Material Interactions publication trend

The graph below shows the total number of articles in vibration-assisted friction control in material interactions across all publications each year (not limited to Nature Index journals).

Technical terms

Coefficient of friction: Ratio of tangential force to normal load at a contact interface, indicating resistance to sliding.

Contact stiffness: Measure of the elastic resistance of an interface to deformation under load, influencing vibration transmission.

Normal oscillations: Vibratory motion perpendicular to the sliding plane, affecting contact duration and micro-separation.

Tangential vibrations: Oscillations parallel to the direction of sliding, promoting micro-slip and reducing effective friction.

Modal excitation: Activation of a structure’s natural vibration modes, which can alter contact forces and frictional behaviour.

References

1. The effect of contact compliance of sliding pair on friction force reduction at longitudinal tangential vibrations. Tribology International (2023).
2. Vibration-Assisted Handling of Dry Fine Powders. Actuators (2018).
3. Nonprehensile Manipulation of Parts on a Horizontal Circularly Oscillating Platform with Dynamic Dry Friction Control. Sensors (2021).
4. Manipulation of Miniature and Microminiature Bodies on a Harmonically Oscillating Platform by Controlling Dry Friction. Micromachines (2021).
5. The Influence of Vibration on Friction: A Contact-Mechanical Perspective. Frontiers in Mechanical Engineering (2020).
6. Experimental and FE Investigation on the Influence of Impact Load on the Moment Transmission of Smooth Shaft–Hub Connections. Applied Sciences (2024).