WIT Press


The Worst Case Estimation Of The Dynamic Response Of A Beam Based On Convex Model Of Uncertain Foundation

Price

Free (open access)

Paper DOI

10.2495/CMEM970221

Volume

17

Pages

10

Published

1997

Size

800 kb

Author(s)

L. Fryba and N. Yoshikawa

Abstract

A methodology for the worst case estimation of dynamic railway track based on the convex model of uncertainty is presented. The rail under moving axle load of the vehicle is idealized by an infinitely long elastic beam subjected to a force moving with constant speed on the Winkler foundation with spatially uncertain stiffness. The beam with the foundation is discretized by finite elements, and the uncertainty variables are assigned to foundation stiffness of all the elements

Keywords