A STUDY TO EVALUATE THE DYNAMIC LOADS OF SEMI-TRAILER AFFECTING THE ROAD

Abstract

As the demand for transporting goods by semi-trailers is increasing, the issue of assessing the
dynamic load between the wheels of the vehicle and the road surface is increasingly of concern by the
researchers to serve the road and vehicle design process. To reduce road surface damage for each type
of road, it is necessary to conduct research according to dynamic load assessment standards for
different road types and speed ranges to provide assessments and warnings to drivers the speed
ranges appropriate to road type. The article uses the Dynamic Road Stress Factor (DRSF) to research
and evaluate the suspension system model of 5-axle semi-trailer using leaf spring, surveying on
random types of roads according to ISO 8608 standards with speed range varying from 20 to 120
km/h. The results have provided DRSF values to evaluate and recommend appropriate speeds of semi-
trailer when traveling on different types of roads to minimize road surface damage.