FINITE-ELEMENT MODEL WITH STRESS-DEPENDENT SUPPORT

The finite-element model presented is a modified and expanded version of the model developed in 1977 for the study of jointed, slab-on-grade pavements, ILLI-SLAB. A number of modifications to the original code are described. The most important of these is the incorporation through an iterative procedure of thee deflection-dependent resilient modulus of subgrade reaction (K sub R). This parameter is considered more appropriate in modeling nonlinear subgrade response to rapidly moving loads. Other changes include generation of contour plots of system response, introduction of lines of symmetry, correction of the uniform subgrade stiffness matrix, specification of loaded areas in terms of global coordinates, and free-form input capability. To illustrate the impact of these innovations, results from several demonstration runs are summarized. The major effect of the proposed model is due to the higher values of K sub R compared with the commonly used static k.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1984/954/954-002.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=FINITE-ELEMENT+MODEL+WITH+STRESS-DEPENDENT+SUPPORT&author=A.+Ioannides&author=E.+Barenberg&author=M.+Thompson&publication_year=1984
• Availability:
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Rigid Pavements. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Ioannides, A M
  • Barenberg, E J
  • Thompson, M R
• Publication Date: 1984

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 10-16
• Monograph Title: Design, evaluation, and performance of pavements
• Serial:
  • Transportation Research Record
  • Issue Number: 954
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Coefficient of subgrade reaction; Deflection; Finite element method; Mathematical models; Modulus of resilience; Stiffness; Stresses; Structural supports; Subgrade materials
• Uncontrolled Terms: Models
• Old TRIS Terms: Contour plots; Supports
• Subject Areas: Geotechnology; Highways; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00391024
• Record Type: Publication
• ISBN: 0309036747
• Files: TRIS, TRB
• Created Date: Dec 30 1984 12:00AM