Derivation of vehicle dimensions at the early concept stage based on occupant posture
by Igor W.S.L. Cruz; Thomas Gänsicke; Julian F. Sandiano; Christian Raulf; Thomas Vietor
International Journal of Vehicle Design (IJVD), Vol. 94, No. 3/4, 2024

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.

Online publication date: Mon, 11-Mar-2024

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