Research to Evaluate the Quality of Passenger Bus Body Frame, Assuring the Passive Safety in the Design Process

Abstract:

At present, we are aiming to improve the localization rate and cost reduction in Vietnam, the bus manufacturing units have made their own chassis on the basis of appropriate selection. Passenger bus body frame design is an important process to ensure the suitability and quality of the product before the manufacturing. According to the governmental regulations, the vehicle manufacturing sector in Vietnam must comply with a design approval process and type approval test. Designs must be approved by the competent authority prior to the commencement of manufacturing. There are some applicable regulations in Vietnam such as the standard QCVN 09:2015/BGTVT and QCVN 10:2015/BGTVT on the standards for passenger buses to ensure technical safety and environmental protection. However, there is no specific regulation on the evaluation of bus durability to ensure the passive safety of such vehicles. During the design process, it is possible to calculate the durability accurately that determines the quality of the passenger bus body frame. It could enable automobile manufacturers as well as the competent authorities of design quality approval to control the bus body frame quality, resulting in the improvment of the pruduct, the competitiveness of the product and reducing the production cost. This presentation is the result of structural studies which calculated the deformation of the passenger bus body frame in frontal crash in accordance with the standard ECE R33 and the case of flipping in accordance with the standard ECE R66 for the 46-seat passenger bus, manufactured in Vietnam by Ansys/LS-Dyna software. Accordingly, this evaluation was implemented to assess the quality of the passenger bus body frame in the design process. The result shows that the passenger bus body frame meets the requirement of durability and passive safety in accordance with the calculated standards.

• Periodical: Applied Mechanics and Materials (Volume 889)
• Pages: 440-447
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.889.440
• Online since: March 2019
• Authors: THANH CONG NGUYEN
• Keywords: ANSYS/LS-DYNA, Bus Body Frame, Design Process, Passive Safety

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