Article: Derivation of vehicle dimensions at the early concept stage based on occupant posture Journal: International Journal of Vehicle Design (IJVD) 2024 Vol.94 No.3/4 pp.191 - 216 Abstract: This paper presents a new method for deriving dimensional concepts for vehicles at the early concept stage. The derivation is centred on the posture of the occupants, which is calculated with statistical models and used to determine spatial requirements. Dimensions that do not follow directly from the posture calculations are determined with dimensional chains. The number of independent parameters is reduced by specifying dimensions that are assumed constant within a given vehicle segment. The application of the method is exemplified with different vehicle concepts. Vehicle length, width, height, and wheelbase calculated in the examples are comparable to those of existing vehicles. The use of non-proprietary, closed-form equations and the low number of independent parameters simplify implementation and application of the method. Inderscience Publishers - linking academia, business and industry through research

Title: Derivation of vehicle dimensions at the early concept stage based on occupant posture

Authors: Igor W.S.L. Cruz; Thomas Gänsicke; Julian F. Sandiano; Christian Raulf; Thomas Vietor

Addresses: Faculty of Automotive Engineering, Ostfalia University of Applied Sciences, Kleiststraße 26, 38440 Wolfsburg, Germany ' Faculty of Automotive Engineering, Ostfalia University of Applied Sciences, Kleiststraße 26, 38440 Wolfsburg, Germany ' JS Engineering Mobility, An der Ölmühle 19, 65795 Hattersheim am Main, Germany ' Institute for Engineering Design, Technische Universität Braunschweig, Hermann-Blenk-Straße 42, 38108 Braunschweig, Germany ' Institute for Engineering Design, Technische Universität Braunschweig, Hermann-Blenk-Straße 42, 38108 Braunschweig, Germany

Abstract: This paper presents a new method for deriving dimensional concepts for vehicles at the early concept stage. The derivation is centred on the posture of the occupants, which is calculated with statistical models and used to determine spatial requirements. Dimensions that do not follow directly from the posture calculations are determined with dimensional chains. The number of independent parameters is reduced by specifying dimensions that are assumed constant within a given vehicle segment. The application of the method is exemplified with different vehicle concepts. Vehicle length, width, height, and wheelbase calculated in the examples are comparable to those of existing vehicles. The use of non-proprietary, closed-form equations and the low number of independent parameters simplify implementation and application of the method.

Keywords: vehicle dimensions; dimensional concept; concept stage; vehicle layout; driver posture; passenger posture.

DOI: 10.1504/IJVD.2024.137274

International Journal of Vehicle Design, 2024 Vol.94 No.3/4, pp.191 - 216

Received: 09 Dec 2021
Received in revised form: 21 Aug 2022
Accepted: 05 Sep 2022
Published online: 11 Mar 2024 *

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Title: Derivation of vehicle dimensions at the early concept stage based on occupant posture

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