PDF | The main objective of the presented study was to compare the effectiveness of two standard test procedures for evaluating bus roof. he main objective of the presented study was to compare the effectiveness of two standard test procedures for evaluating bus roof integrity: the dynamic rollover. EUROPEAN TEST METHODS FOR SUPERSTRUCTURES. OF BUSES AND COACHES. RELATED TO. ECE R66 (THE APPLIED HUNGARIAN CALCULATION.

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Ditch is modeled as fixed ed rigid wall.

Crash Analysis of an amphibious bus according to the ECE R66 regulations

The impact area of the ditch shall have a horizontal, uniform, dry and smooth concrete surface. An average Element length of10 o mm is maintained in the critical regions and for the regio gions under the floor lower structure-chassis elemement length up to 30 mm was used. In the case of an original body section taken directly from the actual vehicle layout, the basic and the additional connecting structures see Annex 4 Paragraph 3.

Two load-cells shall be positioned on a common horizontal plane, to receive the front wheels. The wheel supports at the other axles shall be adjusted so that the vertical longitudinal centre plane VLCP of the vehicle shall be parallel to the axis of rotation.

Contracting Parties applying this Regulation shall not refuse to grant extensions of approval to the preceding series of amendments to this Regulation. The dynamic characteristics of a PH may be determined in two ways: The test vehicle shall be the same as its fully finished version in respect of the following: The roof structure is mes eshed with 10mm fine mesh to accurately capture re deformation.

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Unladen kerb mass kg: FRPRP and glass are included in the model which is an important nt component for structural integrity. The survival space of the cab efe proved to be sufficient for the safety of the driver.

InterRegs: Regulation No. | ECE – United Nations

GB the safety requirements for bus construction. KN, mm, eve, kg Introduction Buses are generally believed to be very safe. The results showed that the body section of bus was 6r6 with the regulatory requirements; its e66 safety characteristic was good.

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However, the most dangerouss one is intrusion. Residual space Process Methodology Below option was selected for appro ecce and agreed with test agency. The additional elements which do not contribute to the structural strength of the vehicle but which may intrude into the residual space, for example: The total energy E to be absorbed by the superstructure shall be determined as follows: A brief technical description of the algorithm and computer program which are used for the calculation.

These elements shall be identified by the manufacturer, in this design submission: Mass balancing was as done using balancing tool in HyperCrash V11 The side with the lesser support shall be chosen as the direction of the roll-over test. As a firstt step, st before we go for complete rollover simulation, the critical cal bus body joints are physically tested same is repeated by simulation approproach once we have the correlating results approval is taken n from f ARAI.

The arrangement and number of these test pieces ecee be agreed with the technical service. In addition, the total deformation regarding to the safe zone of the frontal cabin in the case of with impact attenuator were lower than without impact attenuator as Although rollov lover crashes are not common, the number of seri eriously injured occupants was high as compared to other cr crash types [2], however, the research and intere erest related on its safety seemed relatively low.

In this study, the frontal impact analysis of the high-decker passenger bus structure based on ECE-R29 using Finite Element FE analysis was focused on.

The test report shall contain all the data pictures, records, drawings, ecf values, etc. When e66 vehicle type approved to the preceding series of amendments meets the requirements of this Regulation as amended by the 01 series of amendments, the Contracting Party which granted the approval shall notify the other Contracting Parties applying this Regulation thereof.

Detailed drawings of ede residual fce according to Paragraph 5. The connecting structures between the bays shall represent the manufacturer’s description of the superstructure see Annex 4, Paragraph 3.

Direction of Roll-over Test The roll-over test shall be carried out on that side of the vehicle which is more dangerous with respect to the residual space. In case of test pieces which have been tested earlier, the test reports shall be submitted. The rigid sections of an articulated vehicle may be tested separately or in combination. The most damaging bus accident is rollover crash. Increased bus usage as a public transport prompts researchers to study safety aspects of the vehicles subjected to various crash incidents.

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Customer Benefit The number of physical tests necessary to prove the concept was significantly reduced by performing the simulations for the bus rollover. In cooperation with the customer’s design and engineering teams, the results of simulations were presented to the RDW and all questions were answered in detail to obtain the certification according to the ECE R66 regulations.

The publish of weapon industry,in Chinese. Skip to main content. Compliance with the criteria stipulated in the ECE R66 regulations is required for buses to operate on the public roads.

The engine, power transmission, suspension and an axles were modeled by 1D element. The vehicle shall be tilted without rocking and without dynamic effects until it reaches unstable equilibrium and commences its roll-over. The vehicle centre of gravity position determination was studied and calculated. How important was vehicle safety in the new vehicle purchase process?

The sum of the masses attributed to each bay shall be related to the mass M of the complete vehicle: By continuing to browse the site you are agreeing to our privacy and cookie policy.

In fact, Matolcsy [6]] collected c the statistics of over rollover accidents, which ch showed the average casualty rate to be 25 pe per accident. These additional elements must not have a r666 effect on the strength of superstructure.

This mass distribution shall express the energy absorbing capability and load bearing capacity of each bay. Between two deformed pillars the contour shall be a theoretical surface, determined by straight lines, connecting the inside contour points of the pillars which were the same height above the floor level before the roll-over test see Figure 1.

For testing the articulated sections as a combination, the sections of the vehicle shall be fixed to each other in such a way that, 2. In case of frontal crashworthiness, the high- decker bus safety was referred to the regulation no.