# The Moving Load Problem in Structural Dynamics Essay

2988 Words 12 Pages
CHAPTER 1
INTRODUCTION
The moving load problem is a fundamental problem in structural dynamics. Engineers have been investing the potential hazard produced by the moving masses on structures for many several years. The dynamic response of structures carrying moving masses is a problem of widespread practical significance. A lot of hard work has been accounted during the last ten decades relating with the dynamic response of railway bridges and later on highway bridges under the effect of moving loads. Beam type structures are widely used in many branches of civil, mechanical and aerospace engineering. The importance of moving mass is found in several applications in the field of transportation. Railway and highway bridges, suspension
Increase in traffic intensity and speed requires more multifarious study of structures than it was case before.
The simplest case of a moving load investigation is the case of a simple beam over which a concentrated load is moving, that is represented with a Fourth order partial differential equation
This problem has significant effect in civil and mechanical engineering. The dynamic analysis of the vibrating beam is done by neglecting the disconnection of the moving mass from the beam during the motion and result is given by considering mass moving at constant speed and in one direction. Once the load departs from the beam, it begins to vibrate at in free vibration mode. Hence this process no longer comes within the scope of the experiment.

CHAPTER 2
LITERATURE REVIEW
The dynamic analysis of beam structure with moving load is a fundamental problem in structural dynamics. In comparison to other dynamic load, the moving load varies in position as well as time and that’s why the moving load problem is a special topic in structural dynamics. Since nineteenth century the moving load problem has become more dynamic in nature due to increased vehicle speed and structural flexibility. The problem of dynamic response of Bernoulli-
Euler beam subjected to a moving mass has been studied by many authors and the importance of this problem is demonstrated in several ways by many authors. The response of beams under the action of moving

## Related Documents

• ###### Fluid-Structure Interaction: Lowering Subsea Structure / Equipment in Splash Zone During Installation

fields. This paper presents a novel approach using Fluid-Structure Interaction (FSI) to predict wave induced motions, wave loads, dynamic stresses and deformation of subsea structure and equipments in the splash zone during installation. This approach combines transient multiphase CFD simulation including dynamic mesh motion with transient nonlinear Computational Structural Dynamics including tension forces in non-linear flexible slings. This proposed approach has been successfully implemented for lowering…

Words: 3480 - Pages: 14
• ###### Construction Floor Systems Essay example

The floor system is the primary horizontal building structure which must withstand both live loads and dead loads, (BCA Part B1.2) (AS 1170.1). Any flooring system consists of linear beams and joists to distribute floor loads evenly throughout floor surface, transferring horizontal loads down to vertical structures such as beams, columns or load bearing walls. Floor systems must safely support moving loads. A floor system should be relatively stiff while maintaining its elasticity. If there is…

Words: 3308 - Pages: 14
• ###### Building Construction Essay

hazards • Fire protection systems – first line of defense in a building • Occupancy of the building – often affects fire behavior…each occupancy has different hazards & fuels, and the structural components are subjected to different temperatures, heat release, & duration. • Fire/fuel loads – weight of combustibles per sq ft…can be used to determine the total heat release • Type of construction • Configuration – refers to a buildings general shape or layout • Access &…

Words: 8392 - Pages: 34
• ###### Essay on Ansys Workbench Basic Manual

of the possible problems students may face during their journey in discovering this application. The flow of information is structured that the reader gets an understanding of how important ANSYS is, and how it works and what type of machines are needed for the student level research expected. Then the tutorial goes on with simple straight forward examples of structural and fluid physics simulated using the ANSYS package. Eventually, the tutorial addresses the most important problems generally faced…

Words: 8650 - Pages: 35
• ###### Designing Driving Simulators Essay

reliability compared to the rest. We will now take a closer look at some of these products to analyse their pros and cons so that we can come up with a design that is best suited to our consumer requirements. 2 1) CarSim CarSim simulates the dynamic behavior of racecars, passenger cars, light trucks, and utility vehicles. It animates simulated tests and has the ability to output over 700 calculated variables to plot and analyze. The outputs can also be exported to other softwares such as MATLAB…

Words: 6703 - Pages: 27
• ###### Schema for analyzing social welfare programs Essays

basic areas under which these programs could be examined. These areas are that of structural components, alternative program characteristics and ways to evaluate the program. All of the aforementioned areas will be examined in this paper, in relation to a local Social Welfare program - The Targeted Conditional Cash Transfer Programme. Structural Components Dolgoff and Feldstein highlight five (5) key structural characteristics that are needed for examination of a social welfare programme to occur…

Words: 4060 - Pages: 17
• ###### Essay Software Specification Document

segment of the document. Within sections are subsections, and each subsection has several topics that describe individual application features. Contents Purpose of This Document Contents 1. Executive Summary 1A. Overview Identified Problems Proposed Solution Project Scope 1B. Justification Cost Justification Return on Investment 1C. Resource Requirements Human Resources Physical Resources Capital Resources 2. Application Processes 2A. Solution Description…

Words: 9912 - Pages: 40
• ###### Shoulder Impingement Essay example

The shoulder is the most complex joint in the body. It is capable of moving in more than 16,000 positions. Many of its ailments, including the most common ones, involve biomechanical mechanisms that are unique to the shoulder. The most common shoulder problem for which professional help is sought out for is shoulder impingement (Haig 1996). Shoulder impingement is primarily an overuse injury that involves a mechanical compression of the supraspinatus tendon, subacromial bursa, and the long head of…

Words: 2586 - Pages: 11
• ###### Engineering Performance-Based Fire Codes Essay

Administrative Region (SAR) government: ← Upgrading the fire safety provisions in old high-rise buildings [4]. ← Setting up new regulations for karaoke establishments [5,6]. ← Implementing Building Safety Inspection Scheme (BSIS) [7] to take care of structural stability, external finishes and fire safety for existing buildings. ← Acceptance of building submission through fire engineering approach [8] with appropriate committees established to assess the designs having difficulties to satisfy the local…

Words: 5842 - Pages: 24
• ###### Essay about Hyperloop Report

with vague information of how the system is supposed to work. In this report we will investigate and compare the structural, geotechnical, electrical, environmental, safety and pricing of both proposals to see which is a better match for California. 2.0 CIVIL ASPECTS Being an advanced form of transportation here in California, it is critical to break down and analyze the structural, transportational, and geotechnical components of both the proposed Hyperloop project and the CA High Speed Rail…

Words: 7175 - Pages: 29