Comparative analysis of stress distributions and displacements in rigid and flexible pavements via finite element method

In many countries of the world, rigid and flexible pavements are widely used. Some external factors such as stresses displacements play major role in design pavement layers coating, base sub-base. Although empirical formulas methods were used calculation layers, complexity today's transportation engineering demands effectiveness diminished. Nowadays complex problems can be easily simulated solved thanks to higher analysis capabilities computer-aided softwares. this study, stress distributions examined under traffic loads with different coating layer thicknesses (30 mm, 50mm, 70mm, 100 150 mm) by using finite element method. As a result, vertical displacement obtained 5% than pavements. Based on distribution results, values 60% lower Moreover, It was determined that remain layer, while reach addition, regression models have been developed predict thicknesses. High correlation determination coefficient (> 0.90) achieved based both