IJSRD - International Journal for Scientific Research & Development| Vol. 3, Issue 03, 2015 | ISSN (online): 2321-0613 All rights reserved by www.ijsrd.com 2621 A Literature Review on Design of Overhead Monorail Crane for Material Handling Shashi Sagar 1 Prof. Ronak R Patel 2 Prof. Shashank P Joshi 3 1 M.E. Student 2 Assisstant Professor 3 Associate professor 1,2,3 Birla Vishvakarma Mahavidyalaya, V.V. Nagar, Anand, Gujarat, India Abstract— The design of overhead monorail crane is different from general structural design because of its loading conditions and its effects. There is minor axis bending occurs in case of runway beam because of moving load. To design curved runway beam is very challenging due to additional torsional effects. The previous work has been done to evaluate different effects like lateral torsional buckling, moving load effect and deformations of the steel I beams. Behavior of simple curved beam is also studied by some researchers. In this review paper, the previous work will be discussed briefly related to design of monorail runway beam, curved beam and supporting structure. Key words: Monorail Structure, Curved Runway Beam, Bottom Flange Bending, CMAA 74 I. INTRODUCTION Monorail systems come in a variety of arrangements and load capacity and are used with a number of attachments to handle or lifting of load for conveying to different portions of industry. Monorails are a continuous run of fixed, overhead runway for lifting, lowering and suspend the load to be transported with the help of trolley hoists. The control of movement or travel of trolley is controlled manually in case of hand propelled system or by electrical or pneumatic system in case of automatic monorail system. II. LITERATURE REVIEW The general monorail structure design includes the design of runway beam, support positions, design of supporting structure and connections. There are very few works have been done by the previous researchers for the design of whole monorail system. So, the full system is divided into different individual components, like monorail straight I Beam, Curved I beam and design of supporting Beam and columns. In this review, the research works in the area of monorail system and its components-parts have been presented. This may be helpful to people who are working in this area. A. Designof Monorail System: Tomas H Orihuela 3 and A D Anjikar et al. 4 describe the basic procedure of monorail system design. Generally I section beams are used for monorail system having high load capacity. Thestructural design should follow the design criteria given in CMAA 74. The monorail system is checked for the stress developed, deflection and local capacity check. For high speed monorail system, it is also compulsory to check for fatigue. These works are limited to only straight runway beam design and didn’t explain the structural or curved runway beam design. A D Anjikar et al. 5 studied the uses of seven different ratio to reduce cost assigned to material handling activities and increase overall plant productivity. They discuss the problems under Design load rating or lift load, Safety, load, or impact factors to use, Path for conveyor, preferred method of support, Maximum lift design load. In this paper the work is not explained with specific industrial application. B. Design of I Beams: NenadZrnićet al. 6 gave loading capacity curves of I-beam runway beams according to capacities related to strength of bottom flange and lateral buckling of top flange. They used the “Mendel” recommendation for bottom flange bending and checked with CATIA. Strength of specific I beam depends of beam span (L) and wheel position on I beam (w). The effect of torsional effect due to lateral load is not considered in developing the load capacity curve. N.S. Trahair 7 analyzed the influence of restraints on elastic lateral buckling (without distortion) of monorails loaded at the bottom flange, and shows how this might be accounted for in strength design. He used finite element lateral buckling program FTBER, which was developed from the finite element computer program PRFELB for the analysis of the elastic flexural-torsional buckling of beam- columns and plane frames. He developed a rational, consistent, and economical strength design method for determining the nominal lateral buckling resistance of a number of monorail beams, cantilevers and overhangs which are loaded at the bottom flange and supported at the top flange. K. M. Ozdemiret al. 8 analyzed the lateral distortional buckling of overhanging monorails and he concluded that the location of loading and supports is significant factor in buckling of overhanging monorails. The increase in web slenderness leads to decrease in buckling capacity of overhanging Monorail beams. Again N.S. Trahair 9 analyzed the inelastic buckling of monosymmetric steel I-beams under uniform bending and non-uniform bending is studied and compared with design recommendations. The result is compared with EURO Code Recommendations and Finite Element Computer Program PRFELB. For hot rolled beams in uniform bending, the inelastic buckling resistance increases almost linearly as the slenderness decreases, until strain hardening occurs. Three regimes are significant in the inelastic buckling resistances of hot-rolled monosymmetric beams under moment gradient. 1) For beams for which the maximum moment causes compression in the smaller flange, the resistance is low and increases with moment gradient. 2) For beams for which the maximum moment causes yielding in the larger flange before the minimum end moment causes yielding in the smaller flange, the resistance is high and increases with moment gradient.