5 6347 0 0 0 0 7285 pzt4 piezoelectric matrix e cm2

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: fixed temperatures Material Properties E = 30e6 Kxx = 1 ρ = 0.21 αx = .21 νxy = .27 Geometric Properties r1 = 1 r2 = 4 σ = 1.19e-11 Loading Interior of exterior cylinder ε = 1 Exterior of interior cylinder ε =1 All other surfaces ε = 0 Exterior of Exterior cylinder T = 1000 Interior of Interior cylinder T = 100 Analysis Assumptions and Modeling Notes The cylinders are assumed to be infinite length, with no end effects, and with uniform surface characteristics. As such, any point on one surface should have the same view factor and characteristics as any other point on the same surface. F(11) = 0 As a circle, it cannot see itself from any part of its surface. F(12) = 1 Consequence of no radiation to space F(21) = (A1/A2)F(12) Basic rule of view factors F(21) = (r1/r2)F(12) F(21) = r1/r2 F(22) = 1 - (r1/r2) Consequence of no radiation to space As a check on the system, the heat flux at two points are compared to that expected by σ(T14 - T24) Results Comparison Target ANSYS Ratio F(...
View Full Document

This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.

Ask a homework question - tutors are online