ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 10

Evaluation of Static and Dynamic Contact Stresses in Simulated Granular Particles Using Strain Gages

Xu, Y
University of Rhode Island, Kingston, RI

Shukla, A
University of Rhode Island, Kingston, RI

(Received 23 January 1992; accepted 7 November 1992)

Abstract

The application of strain gages for the determination of static and dynamic contact loads in granular perticles is demonstrated. For experimental convenience, the grandar particles are simulated by circular disks fabricated from Homalite-100, a brittle polyester material. Stress field equations in the vicinity of the contact points are carefully evaluated to optimize the relative position of strain gages. The results obtained from strain gages were compared with those obtained using the optical technique of photoelasticity for both static and dynamic problems. Finally, as an example, strain gages are used to study wave propagation in a single chain assembly of disks.

Keywords:
contact stress, stress wave, strain gage, photoelasticity, contact length, friction factor

Paper ID: JTE11768J
DOI: 10.1520/JTE11768J
ASTM International is a member of CrossRef.