• Proceedings of the KSME Conference
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• 2001.11a
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• pp.378-383
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• 2001

In order to improve automobile maneuverability and tire durability, it is very important for one to determine a suitable sidewall contour producing the ideal tension and strain-energy distributions. In order to determine such a sidewall contour, one must apply multi-objective optimization technique. The optimization problem of tire carcass contour involves several objective functions. Hence, we execute the tire contour optimization for improving the maneuverability and the tire durability using satisficing trade-off method. And, the tire optimization also requires long cup time for the sensitivity analysis. In order to resolve this numerical difficulty, we apply neural network algorithm.

• Proceedings of the KSME Conference
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• 2004.04a
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• pp.525-530
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• 2004

In this paper, the optimum design of tire sidewall contour consisted of double plies for improving automobile maneuverability and tire durability is considered and a GUI program is developed for the purpose of the practical design. Each improvement of maneuverability and durability depends on the cord tension and strain energy distribution of tire sidewall. Satisfing trade-off method, which requires the judgment of aspiration levels, is used for the multi-objective optimization problem. Also, this paper presents the application to the practical sidewall contour design with the GUI program developed using visual Fortran.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.25 no.10
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• pp.1636-1643
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• 2001

Automobile maneuverability and tire durability are significantly influenced by the sidewall tire contour. In order to improve these tire performances, it is very important far one to determine a sidewall contour producing the ideal tension and strain-energy distributions. However, these requirements can nut be simultaneously achieved by conventional non-interactive multi-objective optimization methods based on mathematical programming, because these exhibit the conflicting behavior each other, with respect lo the sidewall contour. Therefore, we execute the tire contour optimization fur improving the maneuverability and the tire durability using satisficing trade-off method.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.25 no.6
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• pp.980-987
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• 2001

Tire performance is significantly influenced by the carcass tension distribution that is governed by the sidewall contour. To maximize the tire performance, it is very important for one to find the sidewall contour with the ideal tension distribution. But it is not easy to find such an optimal sidewall contour. Therefore, in order for a successful tire-shape optimization, we need to investigate how the change of sidewall radius influences on the carcass tension distribution. In this paper, we intend to numerically investigate the relation between the sidewall-radius change and the carcass tension distribution.

• Journal of Mechanical Science and Technology
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• v.18 no.8
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• pp.1327-1337
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• 2004

An efficient multi-objective optimization method is presented making use of neural network and a systematic satisficing trade-off method (STOM), in order to simultaneously improve both maneuverability and durability of tire. Objective functions are defined as follows: the sidewall-carcass tension distribution for the former performance while the belt-edge strain energy density for the latter. A back-propagation neural network model approximates the objective functions to reduce the total CPU time required for the sensitivity analysis using finite difference scheme. The satisficing trade-off process between the objective functions showing the remarkably conflicting trends each other is systematically carried out according to our aspiration-level adjustment procedure. The optimization procedure presented is illustrated through the optimum design simulation of a representative automobile tire. The assessment of its numerical merit as well as the optimization results is also presented.

• Proceedings of the KSME Conference
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• 2000.11a
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• pp.438-445
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• 2000

Tire performance is significantly influenced by the cord tension distribution, and which is governed by the tire shape. To increase the tire performance, it is very important for one to find the shape with the ideal distribution of tension. But it is not easy to find such an optimal tire shape. Therefore, in order for the successful tire-shape optimization, we need to investigate how the change of tire shape influences on the cord tension. In this paper, we intend to numerically analyse the relation between the carcass shape and the cord tension.