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- Kwangjin Lee, J. R. Barber
- 1993

Thermoelastic instability in automotive disk brake systems is investigated focusing on the effect of a finite disk thickness. A finite layer model with an antisymmetric mode of deformation can estimate the onset of instability observed in actual disk brake systems. Also some effects of system parameters on stability are found to agree well to experimental… (More)

- J. R. Barber
- 2002

A method is developed for placing bounds on the electrical contact conductance between contacting elastic bodies with rough surfaces. An analogy is rst established between contact conductance and the incremental sti¬ness in the mechanical contact problem. Results from contact mechanics and the reciprocal theorem are then used to bracket the mechanical… (More)

- Donghee Lee, N Triantafyllidis, J R Barber, M D Thouless
- Journal of the mechanics and physics of solids
- 2008

If a body with a stiffer surface layer is loaded in compression, a surface wrinkling instability may be developed. A bifurcation analysis is presented for determining the critical load for the onset of wrinkling and the associated wavelength for materials in which the elastic modulus is an arbitrary function of depth. The analysis leads to an eigenvalue… (More)

When heat is conducted across an interface between two different materials, the interaction between thermoelastic distortion and thermal contact resistance can cause the system to be unstable. This paper investigates the influence of material properties on the stability criterion for an interface between two half planes. It is found that most material… (More)

- J. R. Barber, J. Dundurs
- 2008

A simple one-dimensional model is described in which thermoelastic contact conditions gioe rise to nonuniqueness of solution. The stability of the various steady-state solutions discovered is investigated using a perturbation method. The results can be expressed in terms of the minimization of a certain energy function, but the authors have so far been… (More)

- TAEIN YEO, J. R. BARBER
- 1995

When heat is conducted across an interface between two dissimilar materials, ther-moelasfic distortion affects the contact pressure distribution. The existence of a pressure-sensitive thermal contact resistance at the interface can cause such systems to be unstable in the steady state. The stability of a semi-infinite strip in contact with a rigid wall is… (More)

- Yuwei Liu, J. R. Barber
- 2014

When two rough bodies slide against each other, asperities on the opposing surfaces interact with each other, defining a transient contact and heat conduction problem. We represent each body by a Greenwood and Williamson asperity model with a Gaussian height distribution of identical spherical asperities. The heat transfer during a typical asperity… (More)

In many sliding systems, the sliding surfaces are not coextensive, so that points on one surface experience alternating periods of contact and separation. This intermittent process can be expected to influence the sliding speed at which the system is susceptible to frictionally-induced thermoelastic instability (TEI). This question is explored in the… (More)

When contacting elastic systems are subjected to periodic loading, frictional slip occurs resulting in energy dissipation. Here we investigate the effect of the relative phase of harmonically varying tangential and normal loads on the frictional dissipation in a very simple uncoupled frictional system. We demonstrate that this effect is substantial when the… (More)

- J R Barber, K A Razak, Z M Fuzessery
- Journal of comparative physiology. A…
- 2003

A tenet of auditory scene analysis is that we can fully process only one stream of auditory information at a time. We tested this assumption in a gleaning bat, the pallid bat (Antrozous pallidus) because this bat uses echolocation for general orientation, and relies heavily on prey-generated sounds to detect and locate its prey. It may therefore encounter… (More)