Vehicle Body Design and Analysis Aerodynamic by Flow Simulation

A new generation electric high-speed train called Aerotrain has levitation wings and levitates under Wing-in-Ground (WIG) effect along a U-shaped guideway. The previous study found that lacking knowledge of the design makes the prototype unable to regain stability when losing control. In this paper, the nonlinear three-dimensional dynamic model of the Aerotrain based on the rigid body model has been developed to investigate the relationship between the vehicle body design and its stability. Based on the dynamic model, this paper considered an Aerotrain with a horizontal tail and a vertical tail. To evaluate the stability, the location and area of these tails were parameterized. The effects of these parameters on the longitudinal and directional stability have been investigated to show that: the horizontal tail gives its best performance if the tail area is a function of the tail location; the larger vertical tail area and (or) the farther vertical tail location will give better directional stability. As for the lateral stability, a dihedral front levitation wing design was investigated. This design did not show its effectiveness, therefore a control system is needed. The obtained results are useful for the optimization studies on Aerotrain design as well as developing experimental prototypes.

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The effect of spotwelds and structural adhesives on static and dynamic characteristics of vehicle body design

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1177/09544070211004468 ◽

2021 ◽

pp. 095440702110044

Author(s):

Gozde Tuncer ◽

Deniz Mansouri ◽

Polat Şendur

Keyword(s):

Topology Optimization ◽

Element Model ◽

Vehicle Body ◽

Functional Requirements ◽

Performance Indices ◽

Potential Cost ◽

Vehicle Performance ◽

Structural Adhesives ◽

Body Design ◽

Structural Adhesive

Spotwelding and structural adhesive applications are two important processes in the automotive industry as they are closely associated with the functional requirements, weight, and cost of the vehicle. Even though there is a vast body of literature on their mathematical models, the effect of these processes on key vehicle performance indices and optimization is rather limited. Besides, the weight benefit of these processes in terms of functional requirements has not been investigated. There are multiple objectives of the paper to fill this gap: (i) to quantify the effect of structural adhesives on the key performance indices (KPIs) of a vehicle body, (ii) to rank the components based on their gauge sensitivities for body KPIs using topometry optimization, (iii) to assess the weight impact of the structural adhesive applications using the gauge sensitivity results, (iv) to determine the optimum layout of the structural adhesive applications using topology optimization, (v) to present a methodology for automotive original equipment manufacturers (OEMs) to determine the “critical welds” on the vehicle body and reduce the number of spotwelds as a potential cost reduction action. For this purpose, a validated finite element model of 2010 Toyota Yaris has been used. Optimization of the structural adhesives and spotwelds was carried-out using SIMP (Solid Isotropic Material with Penalization) based topology optimization. The thickness of each panel is ranked using topometry optimization results. Automotive OEMs can use the proposed methodology to optimize the structural adhesives or spotwelding processes in their product development cycle.

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Advances in Automotive Conversion Coatings during Pretreatment of the Body Structure: A Review

Coatings ◽

10.3390/coatings8110405 ◽

2018 ◽

Vol 8 (11) ◽

pp. 405 ◽

Cited By ~ 9

Author(s):

Mark Doerre ◽

Larry Hibbitts ◽

Gabriela Patrick ◽

Nelson Akafuah

Keyword(s):

Chemical Reactions ◽

Automobile Industry ◽

Material Selection ◽

The Body ◽

Vehicle Body ◽

Conversion Coatings ◽

Future Directions ◽

Automobile Body ◽

Body Design ◽

New Generation

Automotive conversion coatings consist of layers of materials that are chemically applied to the body structures of vehicles before painting to improve corrosion protection and paint adhesion. These coatings are a consequence of surface-based chemical reactions and are sandwiched between paint layers and the base metal; the chemical reactions involved distinctly classify conversion coatings from other coating technologies. Although the tri-cationic conversion coating bath chemistry that was developed around the end of the 20th century remains persistent, environmental, health, and cost issues favor a new generation of greener methods and materials such as zirconium. Environmental forces driving lightweight material selection during automobile body design are possibly more influential for transitioning to zirconium than the concerns regarding the body coating process. The chemistry involved in some conversion coatings processing has been known for over 100 years. However, recent advances in chemical processing, changes in the components used for vehicle body structures, environmental considerations and costs have prompted the automobile industry to embrace new conversion coatings technologies. These are discussed herein along with a historical perspective that has led to the use of current conversion coatings technologies. In addition, future directions for automobile body conversion coatings are discussed that may affect conversion coatings in the age of multi-material body structures.

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Practical Versus RSM-Based MDO in Vehicle Body Design

SAE International Journal of Passenger Cars - Mechanical Systems ◽

10.4271/2012-01-0098 ◽

2012 ◽

Vol 5 (1) ◽

pp. 110-119 ◽

Cited By ~ 5

Author(s):

Anindya Deb ◽

Clifford C. Chou ◽

Utpal Dutta ◽

Srinivas Gunti

Keyword(s):

Vehicle Body ◽

Body Design

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A structural analysis of vehicle body-in-white using a substructuring technique

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications ◽

10.1243/14644207jmda105 ◽

2007 ◽

Vol 221 (3) ◽

pp. 157-164

Author(s):

B-G Kim ◽

J-I Lee ◽

T-J Chung

Keyword(s):

Structural Analysis ◽

Complex Systems ◽

Mechanical Systems ◽

Vehicle Body ◽

Structural Performance ◽

Assembly Model ◽

Body Design ◽

Body In White ◽

Substructuring Techniques

A great deal of effort have been invested in improving the structural performance and feasibilities of mechanical systems, which are composed of many components. In order to analyse the complex systems, the substructuring techniques based on the behaviour of each component can widely be used in the assembly model that each component is initially incompatible and needs the feasible responses of components. In this paper, this technique is applied to the vehicle body design, and their feasibilities are verified.

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Design of Body Structure for New Type Lightweight Electric Vehicle

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.620.335 ◽

2014 ◽

Vol 620 ◽

pp. 335-340 ◽

Cited By ~ 1

Author(s):

Li Xia Wang ◽

Tian Feng Zhao ◽

Jian Bo Cao ◽

Ji Feng Shen ◽

Yan Bin Xiao ◽

...

Keyword(s):

Energy Saving ◽

Electric Vehicle ◽

Three Dimensional ◽

Structure Design ◽

The Body ◽

Vehicle Body ◽

Body Structure ◽

Three Dimensional Modeling ◽

Body Design ◽

New Type

Considering the efficient use of energy and environmental pollution, people's lives tend to energy saving and environmental protection, and energy saving electric vehicles has gradually been widely used. Through combining theoretical analysis, numerical simulation, system design and experimental validation, based on studying electric vehicle body design principles, the experiment optimized electric vehicle body design, and reduced the weight of the vehicle effectively. Its performance becomes more advanced, and the application becomes more economical and safe. By using Solidworks software, lightweight electric vehicle body structure of two-dimensional design and three-dimensional modeling was built to reach practical requirements. The body structure design is original and simple, which has good practical value.

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