mplicit Identification of Contact Parameters in a Continuous Chain Model

Abstract

Accurate contact modeling is of great importance in the field of dynamic chain simulations. In this paper emphasis is on contact dynamics for a time-domain simulation model of large chains guided in a closed loop track. The chain model is based on theory for unconstrained rigid multibody dynamics where contact within the chain and with the track is defined through continuous point contacts using the contact indentation and rate as means. This paper presents an implicit method to determine contact parameters of the chain model through the use of none gradient optimization methods. The set of model parameters are estimated by minimizing the residual between simulated and measured results. The parameter identification is tested on four different formulations of the Hunt-Crossly hysteresis damping factor with the aim of recognizing a superior model.

Contact Mechanics of Articular Cartilage Layers

“…Other approximate relations connecting the damping parameter b and the coefficient of restitution e * are discussed in [37,43,71,82,89] along with the applications of the Hunt-Crossley model in multibody dynamics simulations. Observe that the coefficient of restitution in the linear viscoelastic impact models [9,73] depends on the impactor mass and does not depend on the impact velocity.…”

A Contact Force Model With Nonlinear Compliance and Residual Indentation1

“…The Hunt-Crossley (HC) model [12] is another compliant contact model that is free from such weaknesses. [1,2,8,[19][20][21]. This model is extended in Refs.…”

“…2(c), and has been utilized to reproduce the behaviors of measurably-deformable objects [1,2,[19][20][21]. This model results in a force-indentation curve, as illustrated in Fig.…”

Articular Contact Mechanics

“…Other approximate relations connecting the damping parameter b and the coefficient of restitution e * are discussed in [37,43,71,82,89] along with the applications of the Hunt-Crossley model in multibody dynamics simulations. Observe that the coefficient of restitution in the linear viscoelastic impact models [9,73] depends on the impactor mass and does not depend on the impact velocity.…”