Finite-Element Analysis of Pavement Structures Using AFPAV Code (Nonlinear Elastic Analysis).
Final rept. Aug 72-Nov 73,
NEW MEXICO UNIV ALBUQUERQUE ERIC H WANG CIVIL ENGINEERING RESEARCH FACILITY
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An evaluation and derivation of the nonlinear version of the Airfield Pavement AFPAV code which is based on the finite-element structural analysis technique is presented. This code provides an analytical capability for modeling all types of pavement systems and could be used in conjunction with the rational pavement evaluation procedure being developed by the Air Force Weapons Laboratory AFWL. Professor Hardins nonlinear stressstrain relationships for base and subgrade materials are used in this code to simulate nonlinear behavior by a series of piecewise linear analyses of the pavement structure. The improved analytical predictions effected by using the nonlinear version of the code are demonstrated by comparing the results with the data from full-scale pavement test sections.
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