Topic
Contact area
About: Contact area is a research topic. Over the lifetime, 12358 publications have been published within this topic receiving 256401 citations. The topic is also known as: contact patch & contact region.
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27 May 1999TL;DR: In this article, the image fixing apparatus includes a heater having a heat generating resistor on a substrate, a heater holder for holding said heater, and a backup roller for forming a nip portion in cooperation with said heater.
Abstract: The image fixing apparatus includes a heater having a heat generating resistor on a substrate, a heater holder for holding said heater, and a backup roller for forming a nip portion in cooperation with said heater, wherein said heater holder has, in a direction along a short side of said heater, a contact area facing said resistor forming area and coming into contact with said heater, and non-contact areas provided on both sides of the contact area and not coming into contact with said heater, and the contact area has a width equal to or larger than the resistor forming area. With this configuration, it is possible to provide the image fixing apparatus capable of restraining a stress applied to the heater and an image heating apparatus capable of restraining a rise in temperature of a sheet non-feeding portion.
69 citations
TL;DR: In this paper, the authors used the ADINA 7.1 sparse solver to solve the contact forces between brake pad and counter body (drum or disk) for both types of brake systems.
69 citations
TL;DR: The wetting property and evaporation behavior of ethanol-water mixtures of various concentrations on gold surfaces modified with 1-decanethiolate self-assembled monolayers (SAMs) were studied and it was shown that the initial contact angle decreases monotonically with increased concentration of ethanol in the mixture.
Abstract: The wetting property and evaporation behavior of ethanol-water mixtures of various concentrations on gold surfaces modified with 1-decanethiolate self-assembled monolayers (SAMs) were studied by digital contact angle analysis. It has been shown that the initial contact angle decreases monotonically with increased concentration of ethanol in the mixture. Evaporation studies revealed a general trend with a preliminary increase in contact angle accompanied with a decrease in contact area, then a constant contact angle accompanied with a slower, linear decrease in contact area. At the very beginning of the evaporation process, the contact angles showed a rapid decrease for the microdroplets of a binary mixture with equal volume fractions (i.e., 50% ethanol). Three distinct stages of the evaporation profile for the ethanol-water mixtures were observed, which differ from the inclusive "pinning" and "shrinking" behavior observed for the pure liquid case. Ultimately, the study makes possible the use of an evaporation profile to monitor the change in concentration of a binary system and allows a better understanding of the interactions between liquid microdroplets with solid substrates.
69 citations
TL;DR: In this paper, an alternative average REeynolds equation for use under conditions of large fractional contact area is proposed, and flow factors for this form of the equation are calculated for a variety of longitudinal surfaces and the results are shown to be relatively insensititve to the initial height distribution and the Peklenik surface pattern parameters.
Abstract: An alternative average REeynolds equation for use under conditions of large fractional contact area is proposed. The flow factors for this form of the equation are calculated for a variety of longitudinal surfaces and the results are shown to be relatively insensititve to the initial height distribution and a variety of Peklenik surface pattern parameters are also derived form the work of Patir and Cheng, Lo and Tripp. These are represented by semi-empirical equations over the full range of contact conditions. The implicaitons of the results, with respect to the lubrication of metal forming processes, is discussed.
69 citations
TL;DR: In this article, a new uniform friction model is proposed based on the assumption of open-close lubricant pockets and a function of real contact area (RAC) α RC and normal press p / σ 0 is established by introducing size/scale factor λ to describe the influence of size effects.
69 citations