Fuel Efficient Sheet Steel Automobiles

Matthews, Austin C.; Wheeler, David; Jordan, H. W.

doi:10.4271/930785

Cited by 4 publications

(5 citation statements)

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“…Current research in the automotive industry is largely driven by the need to reduce production costs and to improve fuel eciency [1]. One way to achieve greater fuel economy is by weight reduction through the use of thinner high-strength steels.…”

Section: Introductionmentioning

confidence: 99%

Automotive box section design under torsion: Part 1: Finite element modelling strategy

Lee

Pine

Jones

2000

Proceedings of the Institution of Mechanical Engineers, Part D:

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Behaviour under torsion is an important performance-related property of automotive box sections. A previous experimental study has identi®ed joining technique, section thickness and section area as the major in¯uencing factors on the torsional behaviour of box hat sections. Using these test results as the basis, a ®nite element modelling strategy that can simulate the behaviour of adhesively bonded and spot-welded automotive box sections subjected to torsion is presented. The numerical study investigated the eects of material representation, mesh density and layout, and joining technique representation on the stiness, elastic limit and ultimate strength of the box sections. The ®nal model, calibrated and validated against test results obtained from previous work, was used in an extensive study, presented in the companion paper (Part 2), to further the understanding of the behaviour of torsionally loaded box sections and its implications on weight reduction of automotive structures.

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Section: Introductionmentioning

confidence: 99%

Automotive box section design under torsion: Part 1: Finite element modelling strategy

Lee

Pine

Jones

2000

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…A linear relationship is assumed between box section stiffness and area (Fig. 9), even though equation (1) indicates that K is proportional to the square of the area of the section. Using equation ( 1), the theoretical stiffness of a 2500 mm 2 , 1.2 mm thick square section and of a 3600 mm 2 , 1.2 mm thick square section is 709 and 409 N m/deg respectively.…”

Section: Torsional Stiffnessmentioning

confidence: 99%

“…Much of the recent research in the automotive industry has been motivated by the need to reduce production costs and to improve fuel efficiency, which is driven by more stringent requirements in CAFE regulations in North America, customer demands and a proposed carbon tax in Europe [1]. One way of achieving greater fuel economy is to reduce vehicle weight through replacing conventional mild steel with alternative materials such as plastic, aluminium or thinner high-strength steels.…”

Section: Introductionmentioning

confidence: 99%

Weight reduction in automotive structures—an experimental study on torsional stiffness of box sections

Pine

Lee

Jones

1999

Proceedings of the Institution of Mechanical Engineers, Part D:

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Torsional rigidity is an important performance related property of an automotive body-in-white (BIW) structure, which consists of many box hat structures or box sections. An experimental study has been carried out to determine mainly the torsional stiffness but also the elastic limit and the strength of spot-welded and adhesively bonded (and weld-bonded) box sections. The relative contribution of a variety of factors, including joining system used, steel strength, sheet thickness, section area and section design, to the properties of box sections was analysed using factorial design experimentation techniques. It was found that a significant increase in torsional stiffness could be achieved by changing the joining technique, increasing the sheet thickness, increasing the section area and, to a lesser extent, changing the section design. The results are examined and discussed in the context of weight reduction in automotive structures.

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“…However, simple modification of structural parts may be limited by the body strength, stiffness and crashworthiness. Therefore, an understandRecently, significant efforts have been made by automotive manufacturers to meet the increasing need to ing of the detailed strength and stiffness distribution in a body is important for attaining optimization in weight reduce production costs and improve fuel efficiency [1,2]. Weight reduction of vehicle body structures is pursued reduction design and effective structural strength and rigidity.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis for bus side structures and lightweight optimization

Lan

Chen

Lin

2004

Proceedings of the Institution of Mechanical Engineers, Part D:

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Lightweight structures in bus body design have been highlighted. In this investigation a new typical medium-sized bus body structure has been modelled and analysed using the computer aided design (CAD) package UG and finite element (FE) solver ANSYS. This paper presents a comparative analysis of two body side structures: with and without structural supporting members between the longitudinal waist beams of the side frames. Firstly, analysis of structure strength and stiffness for low-order vibration modes was carried out, and the effects of different structures on strength, rigidity and material use efficiency were examined. Corresponding experimentation was carried out to validate the simulation results. Secondly, sensitivity studies and structural optimization were performed to reduce body weight without losing overall strength and rigidity. Geometric parameters, including cross-sectional parameters and wall thickness, of large structural members are considered in the optimization. The results of the research provide a means of structural design optimization with consideration of bus body weight reduction.

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Fuel Efficient Sheet Steel Automobiles

Cited by 4 publications

References 0 publications

Automotive box section design under torsion: Part 1: Finite element modelling strategy

Automotive box section design under torsion: Part 1: Finite element modelling strategy

Weight reduction in automotive structures—an experimental study on torsional stiffness of box sections

Comparative analysis for bus side structures and lightweight optimization

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