0
TECHNICAL PAPERS

Behavior of Nonhomogeneous Materials Subjected to Bearing Load

[+] Author and Article Information
Varun Batra

Department of Mechanical Engineering and Applied Mechanics, 222-B Wales Hall, University of Rhode Island, Kingston, RI 02881

Carl-Ernst Rousseau1

Department of Mechanical Engineering and Applied Mechanics, 222-B Wales Hall, University of Rhode Island, Kingston, RI 02881rousseau@egr.uri.edu

1

Corresponding author.

J. Eng. Mater. Technol 129(2), 248-254 (Sep 08, 2006) (7 pages) doi:10.1115/1.2400278 History: Received January 17, 2006; Revised September 08, 2006

The behavior of homogeneous and nonhomogenous materials with linearly varying material property subjected to line loading is investigated using the optical method of coherent gradient sensing. A three-dimensional finite element solution to the problem is first undertaken to establish the scope of the region within which the optical data can be considered to be valid. The numerical results are also used to uncover information beyond that which can be obtained from the experimental method, therefore fostering better understanding of the material behavior. The results suggest structural superiority of materials loaded on the stiff side of the material gradient due to the fact that this loading configuration attenuates stress concentration effects.

FIGURES IN THIS ARTICLE
<>
Copyright © 2007 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Schematic of typical nonhomogeneous beam used in experiments. Use of varying shades indicates gradation.

Grahic Jump Location
Figure 2

3D stress contours presenting out-of-plane stress patterns. Near face represents the midplane of the model.

Grahic Jump Location
Figure 3

Normalized out-of-plane stress variations: (a) along the loading face; and (b) along the line of symmetry

Grahic Jump Location
Figure 4

Elastic modulus variation in glass filled epoxy composite as a function of volume fraction

Grahic Jump Location
Figure 5

Measured Young modulus variation in graded specimens used in experiments

Grahic Jump Location
Figure 6

Schematic and photograph of the experimental reflection CGS setup

Grahic Jump Location
Figure 7

Optical fringe pattern of out-of-plane gradient at contact point in a homogeneous material: (a) experimental fringes; (b) theoretical fringes

Grahic Jump Location
Figure 8

Discrete bands within which individual sets of data are collected from the fringe patterns

Grahic Jump Location
Figure 9

Load predicted from the discrete sets of optical data

Grahic Jump Location
Figure 10

Superposition of fringe patterns obtained from rigidly and elastically modeled specimens

Grahic Jump Location
Figure 11

Optical fringe pattern of out-of-plane gradient at contact point in a nonhomogeneous material

Grahic Jump Location
Figure 12

Predicted load obtained from optical data in nonhomogeneous material

Grahic Jump Location
Figure 13

Von Mises stress patterns obtained finite element simulations of homogeneous and nonhomogeneous materials

Grahic Jump Location
Figure 14

Displacement profile at contact point of homogeneous and nonhomogeneous materials, derived from numerical simulations

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In