DOMAIN OF ANALYSIS OF ELASTIC MULTILAYER SYSTEM MODELED BY FEM

Analysis of pavement structure is modeled by FEM. Results of analysis may be affected by the size of domain of analysis because FEM analysis is conducted in a limited domain instead of half-space domain. This paper investigates the proper size of analysis of FEM analysis. Backcalculating pavement layer moduli from FWD tests is based on a static analysis of impulse-type pavement response. This paper also investigates how factors such as loading time and loading pattern affect surface deflections.