Development of aspect dummy considering seat dimension factor

The HPM-I dummy that was used to design car seats was developed by referring to human body dimension data in the 1960s, not to reflect changes of body sizes in accordance with time flow. Also, the HPM-I dummy that was made of one plate of a back rest could not express various kinds of postures. Thereafter, HPM-II, which had three back rests, was developed, but it could not consider various kinds of seat dimension factors by body size of 50th percentile male. We developed not only a 5th percentile female model but also 95th percentile male model to make use of them for automobile seat design and rating. The study developed the HARB model, HPM-II model, and CAD model of each percentile based on 50th percentile male HPM-II dummy.