Multimaterial design optimization of a bus body structure conducted a weight optimization of a bus body, considering the sidewall intrusion and static stiffness constraints. A comparative study of aluminium bus body structure before and after modifications in structure is done to troubleshoot the problem of superstructure strength. Double deck bus body structure and drivers cab design. The increased speed and weight of modern bus puts the components of a bus body in a highly dynamic load situation. Evaluation of the seat fastening in the frame of a road. Some processors use a dedicated wire for each bit of the address bus, data bus, and the control bus. Market potential bus is used as the most common public transport vehicle in our. With now close to 16 years of first release, the standard is yet to be fully implemented for various reasons. An integrated frame and body type construction allows an increase in the amount of noise transmitted into the passenger compartment of the vehicle. The address bus is used to specify memory locations for the data being transferred. In orderto ensure that the trusts, the components of the frame, remains as the new bus body structure frame is sufficientstrong, the fe method is used to validate the strength of the new body.
Body was constructed following cmvr guidelines of indian bus body code for coach builders. Lightweight optimization of bus frame structure considering rollover safety c. In tamilnadu karur was considered as its origin place. Bus side structures and lightweight optimization 1069 fig. To achieve a reasonable speed of operation, a computer must be organized so. The body tree is created by a body parser either a supplied parser or a userdefined parser, as described in parsers. Contents profile located at jamshedpur, tata steel ltd. As a seller of the most recognized and trusted brand in student transportation vehicles, your nearest blue bird authorized dealer is your best source for original equipment and aftermarket parts to keep your. Analysis of strength of bus body structure and its siderolling crash simulation. The bus body, such as will be dealt with, may be defined as a multiseated closed body having a fixed main roof structure with crosswise or longitudinal seating, either solely or in combination, with glass windows, a central gangway, and from. Bus body materials, bus body materials suppliers and. Chapter 14 automotive chassis and body seabee online. Triz method for light weight bus body structure design. Simulation and design of production jigs for bus chassis.
Bus body materials products are most popular in southeast asia, mid east, and north america. Arrow coach builders, a modern bus body manufacturing facility is located near chennai, tamil nadu, south india. Primary reason being the paradigm shift in the way a bus body is recommended to be built by bus body code. One of the accidents in which a bus can be involved is bus rollover. According to ais code, performance parameters have to be followed by the bus body builders to ensure required strength.
Rectangular, square and circular steel hollow sections. Pdf modal analysis and optimization of bus body structure. Pdf optimization of bus body frame structure for weight. Its a bus super structure along with chassis having a wheel base of 222. It also helps to reduce the volume of material used in making the bus body. Other relevant high stress values and locations will be shown in the later 1. The cocoon of a bus body is basically divided into six parts. The car body connects all the different components.
For example, the 64pin stebus is composed of 8 physical wires dedicated to the 8bit data bus, 20 physical wires dedicated to the 20bit address bus, 21 physical wires dedicated to the control bus, and 15 physical wires dedicated to various power buses. To ensure strength of the bus body, all the bus body builders have to analyse their design in any one of the fea finite element analysis tool. The top supplying countries or regions are china, pakistan, and south korea, which supply 99%, 1%, and 1% of bus body materials respectively. The matching of the body structure and chassis frame causes problems which have been largely overcome on an adhoc basis. The body tree is a structure of child elements that represents the message content data, and reflects the logical structure of that content. Optimization analysis for fuel cell bus body structure in. The simplest and most common way of interconnecting various parts of the. This paper selects a certain type of golden dragon bus body structure as the research object, by using ansys parametric modeling, and achieve optimization process through the isight software integration ansys. Gauge optimization, vehicle weight saving the rise in fuel costs in most parts of the. Historically, chassis designs were shared between trucks and buses, but in later years specific bus chassis have been developed, and the midibus introduced a lighter weight bus chassis than normal trucks bus manufacture historically developed as chassis and body. Bus body structures structural grade aluminium extrusions are used specification is grade 6082t6 with an ultimate tensile strength uts of 295 nmm2 bus structure required to withstand a lifetime of road inputs and have a suitable fatigue strength adl alone have designed and manufactured 40,000 bus bodies using aluminium.
Utilizing the monocoque bus body structure of low floor bus as the research object and the stress as constraint conditions, this paper developed the topology optimization model with the objective function of minimum structural mass under the horizontal bending conditions. Bus rollover is one of the most serious types of accident as compared to other modes of bus accidents. Leveraging on our expertise, we are able to manufacture and supply an extensive range of bus body structure. Our expert engineers and technicians manufacture these products with utmost precision keeping in mind the requirements of the clients. Design and analysis of a bus body side frame modeling the structure, weight reduction is the prime objective. However, the apillar and the d pillar stand inclined in some vehicles for. In these cases, the body structure is essential for the protection of the passengers, and the scientists analyze how to improve. This is not surprising, because the structure must perform the functions of both of these elements. Tidbury the problems of designing bus and coach bodies are discussed. The study of bus superstructure strength based on rollover. Reducing the weight of a bus body frame by 17% without. Optimization of mechanical response of automotive and body designs are increasingly relies on new models.
Choose the body frame minimum total quality as optimal objective. Based on this objective, it is significant to make a research on optimization for the body structure. These helps in reducing the weight and offers better load path continuity. A light weight design of bus body structure is designed and structural analysis of the body structure under different load conditions is done. Reducing the weight of a bus body frame by 17% without compromise to performance or safety success story keywords. It commenced its operations in 1911, with a capacity of 1,00,000 tonnes per annum of ingots and expanded to a million tonnes per annum of saleable steel by the mid fifties. Strengthening bus frames to maintain residual space occupant space and minimizing occupant injury are necessary. Thank you for choosing blue birdand blue bird parts. Bus bodies bus body structure manufacturer from hyderabad. Topology optimization design of the monocoque bus body. The code also stresses on ensuring stability and strength of the bus body structure, seat anchorages and a roll over analysis for the full body to minimise the impact if the bus were to turn turtle. The bus body structure must be balanced in order to obtain the. Automobile body bus body building is an important activity. The bus body industries need to develop the drawings in the aspect of weight reduction but it still remains the same strength or in the standard acceptable level.
Pdf a new design and analysis of bus body structure semantic. The car pillar in the vehicle stands in near vertical position which supports the vehicles roof. This limited warranty provided by champion bus, inc. Data bus a bus which carries data to and from memoryio is called as data bus address bus this is used to carry the address of data in the memory and its width is equal to the number of bits in the mar of the memory. Pdf to study the vibration and noise of the bus, the structural and the relevant acoustic models of the bus body are firstly established. Optimization design of a bus body frame scientific. An overview of strength improvement of a bus body structure. Triz method for light weight bus body structure design journal of.
Available in a wide choice of vehicle specifications and seating configurations, the companys aero bus models range from 19 to 32 in length and can seat up to 33 passengers. Arrow coach builders a stateoftheart and high tech bus body building industry in chennai, south india an iso 9001 certified company. Multimaterial design optimization of a bus body structure and thickness of the selected sidewall beams, while the objectives were the mechanical performances under torsion and rollover conditions. The duration of the limited warranty covering the bus body ends twelve 12 months after you first take delivery of the vehicle from an authorized.
The control bus carries the control, timing and coordination signals to manage the various functions across the system. Applications car body body structures european aluminium. Compliance with such stringent parameters is likely to put the unorganised part of the indian bus. The floor frame is built together with the chassis frame. Each element in the parsed tree is one of three types. The paper presents the new bus body conceptual design for light weight. There are 814 bus body materials suppliers, mainly located in asia. The paper presents the new bus body conceptual design for light weight structure comparing to the existing bus body structure. The data bus, which is a bidirectional path, carries the actual data between the processor, the memory and the peripherals. Bus body structure, redesign, structural finite element analysis. Sheeting 2 manufacture the bus front and rear from fibreglass.
A new design and analysis of bus body structure iosr journal. The logical tree structure is the internal broker representation of a message. Base, ceiling, right side, left side, front and rear. The body of an automobile is made of a structure that is just same as that of a house. The matching of the body structure and chassis frame causes problems which. A classic finite element model of the bus body is established that focuses on analyzing. Pdf triz method for light weight bus body structure design. In recent years, for the sake of energy saving and environment protection, lightweight body structure becomes the trend of vehicle development.
The lightweight steelreinforced fiberglass composite body structure is durable and meets all industry performance and safety standards. Le department of mechanical and automation engineering, dayeh university, taiwan, roc abstract the transit bus is an important part of public transportation, while in a bus. The optimization was conducted to determine the minimum weight of the bus frame structure without violating the specified natural frequency constraints. It has similar components which include the roof, the pillars, and the floor. Modular structures made of two different materials were tested and analyzed to confirm the present methodology, first the structure made of steel that is used by the bus industry in brazil was. Warrantor covers the bus body and body structure when sold by an authorized dealer. In orderto ensure that the trusts, the components of the frame, remains as the new bus body structure frame is sufficientstrong, the fe method is used to validate.
Bus manufacturing had its earliest origins in carriage building. Other bus manufacturers had their origins in truck manufacturing. When a message arrives at a broker, it is received by an input node that you have configured in a message flow. Simulation and design of production jigs for bus chassis somsak siwadamrongpong, usawadee ongarjwutichai. Dec 31, 2015 arai and bus body builders meet over bus code. The chasis are supplied by automobile manufacturers, and body is built by automobile body builders as per the requirements of the customer and specifications of the different state transport undertakings.