TY - JOUR AU - Chakrit Suvanjumrat, AU - Ravivat Rugsaj, PY - 2020/12/28 Y2 - 2024/03/29 TI - THE DYNAMIC FINITE ELEMENT MODEL OF NON-PNEUMATIC TIRE UNDER COMFORTABLE RIDING EVALUATION JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 19 IS - 76 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/898 SP - 62-68 AB - <p>The Non-Pneumatic Tire (NPT) has design potential to have desired mechanical characteristic <br>upon usage requirements. The NPT also has no restriction on inflation pressure, maintenance, and less damage <br>possibilities due to flat while driving. The optimum design of NPT to have required load carrying capacity and <br>vertical stiffness can be easily achieved by mean of static Finite Element Method (FEM) with appropriated <br>material models. However the models to predict dynamic response such as tire structure to road pavement <br>interaction, shock absorption and ride comfort are still needed. This paper aims to develop FEM to study <br>dynamic characteristics and evaluate the ride comfort property of the NPT. The FEM of NPT, which composed <br>of Tread band and Spokes, was model using 3D hexagonal and 2D Quadrilateral elements respectively. The <br>rebar elements and tying equation were used to model steel belt layers of the NPT. The visco-hyperelastic <br>constitutive model was used to model the mechanical behavior which depends on time of the NPT’s <br>components. The FEM of NPT was then assigned to traverse across cleats with different heights to study the <br>effect of obstacle on tire-road interaction and dynamic response of NPT. The impact force history and <br>deformation behavior of NPT at any given time was analyzed. The results were compared to discuss the validity <br>of the model to capture important dynamic characteristic that considered useful in designing of NPT to have <br>ride quality challenging the commonly used pneumatic tire.</p> ER -