A note on Hunt and Crossley model with generalized visco-elastic damping. (November 2018)

• Record Type: Journal Article
• Authors: Sun, Jing; Lam, Nelson; Zhang, Lihai; Ruan, Dong; Gad, Emad
• Is Part Of: International journal of impact engineering. Volume 121(2018)
• Page Start: 151
• Page End: 156
• Publication Date: 2018-11
• Subjects: Impact action -- Contact force -- Hunt and Crossley model -- Dynamic compressive stiffness -- Damping coefficient; Impact -- Periodicals; Shock (Mechanics) -- Periodicals; Impact -- Périodiques; Choc (Mécanique) -- Périodiques; Impact; Shock (Mechanics); Periodicals; 620.1125
• DOI: 10.1016/j.ijimpeng.2018.07.007
• Languages: English
• ISSNs: 0734-743X

Abstract

Highlights: The Hunt & Crossley model has been developed further by incorporating a closed form expression for determining the value of the damping coefficient D as function of K, n and coefficient of restitution ( Ce ). The value of Ce is measurable whereas " n " is not fixed at 1.5 (as in the case of Hertz law) and may take any value within the range: 1–2. The formal derivation of the newly introduced closed form expression is presented. Abstract: The Hunt and Crossley model has been demonstrated to give accurate predictions of contact force generated by the impact of a solid object. The simulated contact force values have been demonstrated to match closely with experimental results as reported in the literature. However, derivation of the expression for finding the value of the damping coefficient has never been presented. The writing of this paper was motivated by the need to fill in the important knowledge gap.