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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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. FE model of the full vehicle was com comprised of first order shell elements, 73 spring elements and 44 mass elements ADMAS and 48 Rigid Elements.
Generally, any alteration from the fully finished condition is acceptable if the basic features and behaviour of the superstructure are not influenced by it.
Crash Analysis of an amphibious bus according to the ECE R66 regulations
Taking a full-monocoque body as the research object, the finite element analysis theory was applied to build the finite element model of the bus and the numerical simulation environment of the structural strength of the superstructure. G of the bus and testing of critical bus body joints ints and subsequent approval.
Production Definitely Discontinued In the case of an artificial body section, the connecting structures shall be equivalent in ecd of strength, stiffness and behaviour to that of the vehicle superstructure; 6. The whole roof structure shall be well represented in the body sections if there are local specialities, like changing height, air condition installation, gas tanks, luggage carrier, etc.
Ecw kerb mass kg: The longitudinal l and transverse t coordinates of centre of ecs shall be determined on a common horizontal ground ecw Figure A3. All connecting elements between the bays are also arranged exactly as they appear in the actual vehicle. If the residual space is infringed during the roll-over simulation, the approval shall be refused. Every body section shall have at least two bays; 3.
Buses are the most popular and common passenger vehicle for long distance travel in Malaysia. 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. Application for Approval dce. The connecting structures between bays shall be clearly defined in the superstructure.
The individual load-cell readings shall be noted simultaneously and shall be used to check the total vehicle mass and centre of gravity position. A statement of whether or not the requirement of Paragraph 5. Drawings and detailed description of the superstructure of the vehicle type or group of vehicle types ecs to Annex 4. Starting months after the entry into force of the 01 series of amendments to this Regulation, Contracting Parties applying this Regulation may refuse first national registration first entry into service of a vehicle which does not meet the requirements of the 01 series of amendments to this Regulation.
In case of a rollover, the passengers run the risk ris for being exposed to ejection, partial ejection, n, projection, or intrusion, and are thus exposed to a high fatality fa risk [6, 7].
Analysis and discussion on the deformation of the truck cabin and the survival space of the dummy sce presented. Brief summary of description of the superstructure in ecr of Paragraph 3.
By measuring the vehicle in total effective mass condition, or 1. The midmid-surfaces of these CAD model were extracted, d, since most geometrical features of the bus have been defin fined with thickness, to proceed for shell-meshing. The arrangement and number of these test pieces shall be agreed with the technical service. The simulation program shall produce a stable solution, in which the result is independent of the incremental time step.
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Crash Analysis of an amphibious bus according to the ECE R66 regulations – Article TechNet Alliance
For testing the articulated sections separately, the single-axle sections shall be attached to an artificial support which keeps them in fixed relation to the tilting platform during its movement from the horizontal to the point of roll-over.
Tell me more Already a subscriber. As a second step, the complete vehicle rolls over simulation was wa performed. The engine, power transmission and suspension were ere modeled by 1D element.
The Study of Bus Superstructure Strength Based on ECE R66
The asymmetry of the residual space, see Paragraph 5. The position of the centre of gravity, the total value of vehicle mass unladen kerb ee, or total effective vehicle mass where e66 are fitted and the distribution and location of masses, as declared by the manufacturer.
Which elements of the superstructure are assumed as rigid parts. The simulation program shall be able to calculate the energy components for the energy balance at every incremental time step.
Ditch is modeled as fixed ed rigid wall. The three parameters which define the worst case are: 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.
Whether, or not, the requirements – given in Paragraph 5.