Abstract
In this paper, a fundamental mechanism for creep-groan generation is investigated by adopting a simple yet effective caliper-slider experimental model. Contact condition, which is a function of three parameters, namely normal force, contact roughness, and material combination, is connected with the creep-groan phenomenon in terms of contact stiffness. Creep-groan generation is determined by analyzing the frequency characteristic of the generated vibration acceleration when the sliding commences due to a simultaneous application and release of force in the tangential and normal directions, respectively. As per the obtained results, creep-groan occurrence or absence in the employed experimental model may be classified into three regions based upon the value of the contact stiffness, i.e., occurrence, non-occurrence, and mixed regions. The results also indicate that creep-groan occurrence in this caliper-slider experimental model can be avoided by controlling the value of contact stiffness in an effective manner.
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Abbreviations
- W :
-
Elastically supported load [N]
- K n :
-
Contact stiffness [N/m]
- β:
-
Mean radius of asperities [μm]
- ρ av :
-
Average radius of curvature of asperity tip [μm]
- η:
-
Area density of asperity [count/μm2]
- σ:
-
Standard deviation of asperity height [μm]
- E 1, E 2 :
-
Modulus of elasticity [P a × 1012]
- ∅G :
-
Height distribution of asperities with Gaussian distribution
- A n :
-
Nominal contact area [μm2]
- v 1, v 2 :
-
Poisson’s ratio
- z :
-
Asperity height [μm]
- δ:
-
Separation between two surfaces, δ, = [d max –d], [μm]
- R q :
-
Root mean square of profile [μm]
- RS m :
-
Average spacing of roughness peaks [μm]
- R p :
-
Maximum profile peak’s height [μm]
- H sc :
-
Number of complete profile peaks within assessment length [counts]
- L :
-
Length of assessment [μm]
- z :
-
Normalized non-dimensional asperity height
- z m :
-
Asperity height [μm]
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Fuadi, Z., Adachi, K., Ikeda, H. et al. Effect of Contact Stiffness on Creep-Groan Occurrence on a Simple Caliper-Slider Experimental Model. Tribol Lett 33, 169–178 (2009). https://doi.org/10.1007/s11249-008-9404-4
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DOI: https://doi.org/10.1007/s11249-008-9404-4