FLEXIBLE PAVEMENT MODEL VESYS IV-B

Various capabilities of several versions of the VESYS flexible pavement model have been combined into a single computer program called VESYS IV-B. The resulting computer program was also edited and modularized to make it more convenient to use and to modify in the future. VESYS IV-B now models an n-layer flexible pavement structure using resilient moduli, creep compliance, or a combination of these for specifying layer stiffnesses, which may be varied seasonally. Both single and tandem axles are considered. Both fatigue and permanent deformation material properties may be varied seasonally, and permanent deformation properties and layer moduli may be varied with magnitude of loads as well. Seasonal variations in the fatigue constants K1 and K2 may be generated internally on the basis of seasonal pavement surface temperatures or stiffnesses. This state of the art model predicts fatigue cracking, rutting, and serviceability loss. These revisions and improvements are described in the report, and a combined keyword dictionary and input guide is included. (FHWA)

• Record URL:
  https://rosap.ntl.bts.gov/view/dot/74715
• Corporate Authors:

  Brent Rauhut Engineering Incorporated

  912 Prairie Trail
  Austin, TX  United States  78758

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Jordahl, P R
  • Brent Rauhut, J
• Publication Date: 1984-6

Media Info

• Pagination: 40 p.

Subject/Index Terms

• TRT Terms: Computer programs; Creep; Fatigue (Mechanics); Flexible pavements; Mathematical models; Modulus of resilience; Pavement cracking; Pavement layers; Ruts (Pavements); Seasons; Serviceability; Stiffness
• Uncontrolled Terms: Models; Rut; Seasonal variations
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00388826
• Record Type: Publication
• Report/Paper Numbers: FHWA-RD-84-021 Final Rpt., FCP 35E1-041
• Contract Numbers: DTFH61-80-C-00175
• Files: NTL, TRIS, USDOT
• Created Date: Sep 28 1984 12:00AM