CHAPTER 1INTRODUCTION The problem of moving loads is a fundamental problem in structural dynamics. For many years, engineers have been studying the potential risk produced by masses moving on structures. The dynamic response of structures carrying moving masses is a problem of widespread practical significance. Over the past decade, much hard work has been devoted to the dynamic response of railway bridges and later highway bridges under the effect of moving loads. Beam structures are widely used in many branches of civil, mechanical and aerospace engineering. The importance of moving mass is found in numerous applications in the field of transport. Railway and highway bridges, suspension bridges, guideways, crane routes, cable cars, rails, roadways, runways, tunnels and pipelines are examples of structural elements to be designed to support moving masses. Furthermore, in the design of manufacturing processes, many elements can be modeled as beams acted upon by moving loads. The dynamic effect of moving loads was not known until the mid-19th century. The collapse of the Stephenson Bridge over the River Dee Chester in England in 1947 prompted engineers to research the problem of moving loads. Moving loads have a large effect on the bodies or structures it travels over. It makes them vibrate intensely, especially at high speeds. The peculiar characteristic of moving loads is their variability both in space and time. Modern means of transport are increasingly faster and heavier, while the structures on which they move are increasingly slimmer and lighter. This is why the dynamic stresses they produce are far greater than the static ones. Most of the engineering structures are subject...... middle of paper... insufficient. Provides more accurate results to account for the mass and velocity of the moving load and the dynamic properties of the transportation system in the dynamic analysis.3. The effect of material change on the dynamic response of both simply supported and cantilever beams is the same. SCOPE OF FUTURE WORK:1. The present research can be extended to the Timoshenko beam.2. The acceleration of a mass traveling on a structural system significantly affects the dynamic response of the structural system. It can offer engineers some advantages in achieving more realistic modeling of structural systems subjected to accelerating mass motion compared to classical methods that omit the inertial effects of mass acceleration.3. There are situations in which a series of moving masses travels on a beam like a train travels on a bridge. The response of beams to such types of moving loads is worthy of research.