Abstract
This paper presents theoretical investigation concerning modeling of a human body, seat, steering wheel and pedals system. We have developed a new model of human body that the evaluation of ride comfort is able to estimate. The model of human body consists of six parts: the head, body, thigh, shin, upper arm and fore arm. Each part of the human body is composed with the same fundamental element which is called as a dumbbell model. The dumbbell model is the one that two mass is connected with a flexible bar that has the coefficient of spring, dumper, and plasticity. The movement of the dumbbell mode is considered in the vertical and horizontal direction and rotational movement at the point of center. Each part of the dumbbell model has different parameters and is connected to compose human body. Connected point of each part is considered the friction moment that depends on displacement, relative angle, and relative angular velocity. The functional model is applied in modeling. The analytical result is compared with the measurement result and it agreed extremely well. Some results are presented in the form of parametric graphs. It is shown that the model of human body that has newly developed is able to apply to evaluate the ride comfort.
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