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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By using a dynamic factor K to transform the quasi-static PH characteristics. The energy absorption including to the total deformation f66 the frontal cabin were evaluated.
The Study of Bus Superstructure Strength Based on ECE R66
Compliance with the criteria stipulated in the ECE R66 regulations is required for buses to operate on the public roads. Generally, any alteration from the fully finished condition is acceptable if the basic features and behaviour of the superstructure are not influenced by it. The arrangement and number of these test pieces shall be agreed with the technical service.
As from 60 months after the date of entry into force, Contracting Parties applying this Regulation shall grant ECE approvals for new vehicle types as defined in this Regulation only if the vehicle type to be approved meets the requirements of this Regulation as amended by the 01 series of amendments.
The engine, power transmission, suspension and an axles were modeled by 1D element. Contracting Parties applying this Regulation shall not refuse to grant extensions of approval to the preceding series of amendments to this Regulation.
Units of Measurement The units of measurement shall be: If the equivalent approval test method chosen by the manufacturer cannot take account of some special feature or construction of the vehicle e.
DAES has a large experience in structural analysis. Rollover, Buss Structure, S Residual Space, Finite Element Method hod Abstract Bus rollover is one of the most serious type pes of accident as compared to other modes of bus accidents nts.
United Nations Economic Commission for Europe, Structural elements which reinforce one or more bays; exe example, boxes under seats, wheel arches, seat structures rce side-wall to floor, kitchen, wardrobe and toilet structures.
Drawings and detailed description of the superstructure of the vehicle type or group of vehicle types according to Annex 4. It shall have an axis of rotation parallel to the longitudinal axis of the multi-axle section of the vehicle, and passing through the points of contact of the tyres of that section. The roll-over test is a very rapid, dynamic process having distinguishable stages, should be taken into consideration when a roll-over test, its instrumentation and measurement are planned.
A bay contains one window or door pillar on each side of the vehicle as well as side wall elements, a section of the roof structure and a section of the floor and underfloor structure. The survival space of the cab was proved to be sufficient for the safety of the driver.
Rollover Analysis of Bus Body Structure as Per AIS /ECE R66 | Maej Masnora –
The residual space of the whole vehicle shall be well represented in the body sections, including any peculiar combinations arising from r666 vehicles bodywork configuration; 3. The explicit finite element program Ls-Dyna was used to verify the roof strength and rear wall strength. An average Element edge length gth of 10 mm is maintained in the critical regions and 30mm m in the noncritical regions. Frontiers of Advanced Materials and Engineering Technology.
They investigated on victims with re regard to injury outcomes, mechanisms, and poss ossible injury reduction for occupants when using a safety belelt.
Crash Analysis of an amphibious bus according to the ECE R66 regulations – Article TechNet Alliance
This means, the vehicle including g all its structural parts, members and panels and all projec jecting rigid parts such as luggage racks, on-the roo roof ventilation equipment, should not intrude inside the Res esidual space. Strength of the superstru tructure of large passenger vehicles. The equivalent substitution in respect of mass, mass distribution and installation shall be proved in every case, when structural parts, units are substituted by other units or masses.
The sum of the masses attributed to each bay shall be related to the mass M of the complete vehicle: For the calculation, the complete superstructure shall be mathematically modelled as a load-bearing and deformable structure, taking account of the following: These additional elements must not have a reinforcing effect on the strength of superstructure. The active load shall be increased by small incremental steps and the whole structural deformation shall be calculated at every loading step.
General Specifications and Requirements 6. The T figure shows that energy distribution did rememain constant, indicating that analysis results were accurate te.
For design of truck cabin, the survival space must be guaranteed for the safety for driver and front seat passenger in event of crash, which is the legal requirement described in ECE-R29 regulation. The manufacturer shall define unambiguously the superstructure of the bodywork see Figure A4. For inside observation high-speed photography, video, deformable templates, electrical contact sensors or other suitable means shall be used to determine that the requirements of Paragraph 5.