Three-dimensional finite element study of wheel load interaction

TLDR: In this paper, the structural behavior of an airfield pavement system under multiple heavy wheel loads is investigated. But the authors focus on the impact of wheel load interaction on the pavement.

Abstract: The structural behavior of an airfield pavement system under multiple heavy wheel loads is a big concern with new generation of aircraft. Interactions between wheels are expected to be important because of the relatively small wheel spacing (145 cm for a B-777) and high tire pressures (1.5 MPa). Three-dimensional finite element analysis can help to understand the complex behavior of a pavement under multiple wheel loads. This paper is a case study in which we examine various loading patterns and positions with different material properties and interface conditions. The section studied is modeled after a section of the Denver International Airport. Comparisons of maximum bending stresses and displacements from different landing gear configurations (single, tandem, dual-tandem, and tri-tandem) are made. An edge loading case was found to be the most critical case with respect to maximum stresses and the amount of wheel load interaction.