Numerical and Experimental Analysis of Jamming Phenomenon in Positioning of Circular-Section Workpiece on Horizontal Surface

Authors

1 M.Sc., Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran

2 North Sazman Barnameh Ave Unit 30, No.18, East 7th Alley

Abstract

Workpiece jamming in a fixture may cause improper positioning, damage to the workpiece, and even the fixturing elements. The present study focuses on the numerical and experimental analysis of workpiece jamming with the circular cross-section in a fixture to calculate the jamming-in travel of the workpiece. For this purpose, numerical analysis of a circular workpiece on the horizontal surface was conducted using Abaqus software. To validate the numerical predictions, an experimental setup was designed and fabricated with three circular cross-section workpieces with diameters of 40 mm, 50 mm, and 60 mm. Experimental tests were conducted to measure the friction coefficient between the circular workpiece, base plate, and palm. After the measurement of the friction coefficients, the jamming-in travel of the workpiece was measured using image processing techniques, a calibrated ruler installed on the setup, and an angular encoder. By comparing the experimental results of jamming-in travel to the predictions of the numerical model, the worst-case error values were determined as 12.4%, 6.18%, and 8.53% for workpieces with diameters of 40 mm, 50 mm, and 60 mm, respectively.

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References

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Journal of Solid and Fluid Mechanics
Volume 14, Issue 1
March and April 2024
Pages 63-75

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