Optimum suspension unit design for enhancing the mobility of wheeled armored vehicles |
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Authors: | Eun-Ho Choi Jae-Bong Ryoo Jin-Rae Cho O-Kaung Lim |
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Affiliation: | (1) School of Mechanical Engineering, Division of Mechanical Design and Control Systems, National Technical University of Athens, 9, Heroon Polytechniou Ave, 157 80 Athens, Greece |
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Abstract: | At the concept design stage of an armored vehicle, most design effects focus on firing accuracy, mobility and physical properties
of the vehicle which are directly related to the firing power. This paper addresses an optimal design of the suspension unit
of a four-wheeled armored vehicle to maximize the mobility performance after firing, which is characterized by the stabilizing
time and the vertical acceleration of the driver’s seat after firing. For the numerical analysis and design, a half-car dynamic
model consisting of four degrees and four design variables, spring and damping coefficients of suspension and tire is constructed.
The response surface functions (RSFs) of both the stabilizing time and vertical acceleration are approximated through the
dynamic analysis of the four-degree half-car model. The objective function is defined by a weighted linear combination of
the stabilizing time and the vertical acceleration, and the resulting optimization of the vehicle mobility is carried out
by the PLBA algorithm. To support the validity of the proposed optimization procedure, illustrative numerical experiments
are also performed. |
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