6533b7d1fe1ef96bd125d6e0

RESEARCH PRODUCT

On stiffness and damping of vibro-impact dynamics of backlash

Michael Ruderman

subject

business.industryComputer scienceMechanical impactStiffnessVDP::Technology: 500::Electrotechnical disciplines: 540::Electronics: 541Structural engineeringPrincipal factorCoefficient of restitutionmedicineTransient (oscillation)Restoring forcemedicine.symptombusinessImpact dynamicsBacklash

description

We consider the instantaneous stiffness and damping of the vibro-impact in a backlash pair. Opposed to the existing and mostly used models of the backlash, we address the problem of contact and separation, and the associated force propagation within a mechanical pair, from a viewpoint of the vibro-impact dynamics. We discuss the impact forces with the coefficient of restitution as a principal factor which shapes the transient backlash response.We show that a common approach to modeling the backlash by means of a dead-zone in a restoring force is unsuitable for correctly capturing the mechanical impact. We exemplary demonstrate a qualitative accord between an experimental backlash response and the postulated modeling approach. Backlash related energy losses by damping of vibro-impact system are also addressed in brief.

yearjournalcountryeditionlanguage
2021-06-20
10.1109/isie45552.2021.9576274https://hdl.handle.net/11250/2991632