自動車用シート着座人体のモデル化

（運転者と同乗者のモデリング）

抄録

In order to enhance an additional value of cars, comfort improvement of an occupant is strongly demanded. Evaluation of ride comfort is important for improving quality of comfort, and it is always carried out by an experimental approach. If the dynamic behavior of the occupant can be simulated in a model, the occupant comfort evaluation will probably be carried out more efficiently in numerical calculation in design stage: this leads to shorten the development period. Therefore we attempt to create the driver and the passenger models separately in order to simulate occupant behavior on driving car. In this paper, firstly, the vibration experiments performed to observe differences in vibration response between the driver and the passenger. Subjects sit on a simplified seat with two seated postures (driver and passenger) and are exposed to the composite vibration of lateral and roll sinusoidal waves simulating the slalom running. Translational displacements and roll angles of body parts of them are measured. The experiments showed that characteristics of vibrational response of the driver and passenger are different from each other. Secondly, with focusing on the passenger, on the basis of the characteristics, the passenger is modeled and simulated on equal condition with the experiments. Finally, the driver is modeled and simulated, too. This model is created on the basis of the passenger model by adding some changes to the model. And the simulation results of these models are qualitatively similar to the characteristics of the corresponding situations (driver and passenger) of the experiments.