Effect of Surface Curvature on Contact Resistance Between Abutting Cylinders
Başlık:
Effect of Surface Curvature on Contact Resistance Between Abutting Cylinders
Yazar:
Mayer, Michael, author.
ISBN:
9780438021075
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (44 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Marc Hodes Committee members: Xiaozhe Hu; Erica Kemmerling.
Özet:
Due to the microscopic roughness of contacting materials, an additional thermal resistance arises from the constriction and spreading of heat near contact spots. Predictive models for contact resistance typically consider abutting semi-infinite cylinders subjected to an adiabatic boundary condition along their outer radius. At the nominal plane of contact an isothermal and circular contact spot is surrounded by an adiabatic annulus and the far-field boundary condition is constant heat flux. However, cylinders with flat bases do not mimic the actual geometry of contacts. To remedy this, we perturb the geometry of the problem such that, in cross section, the circular contact is surrounded by an adiabatic arc. When the curvature of this arc is small, our solution is semi-analytical. Then, we employ a series solution for leading-order (flat-base) problem and use Green's Second Identity to compute the increase in contact resistance without needing to resolve the temperature field. Complimentary numerical results for contact resistance span the full range of geometric parameters, i.e., contact fraction and protrusion angle of the arc. The results suggest as much as a 10-15% increase in contact resistance for realistic contacts for typical contact sizes and asperity slopes.
Notlar:
School code: 0234
Tüzel Kişi Ek Girişi:
Mevcut:*
Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(692338.1) | 692338-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
On Order
Liste seç
Bunu varsayılan liste yap.
Öğeler başarıyla eklendi
Öğeler eklenirken hata oldu. Lütfen tekrar deneyiniz.
:
Select An Item
Data usage warning: You will receive one text message for each title you selected.
Standard text messaging rates apply.