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Simulation of human seated postures and dynamic seat interaction in impact conditions

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Author: Happee, R. · Verver, M.M. · Lange, R. de
Source:Proceedings of the XIVth Triennial Congress of the International Ergonomics Association and 44th Annual Meeting of the Human Factors and Ergonomics Association, 'Ergonomics for the New Millennnium', 29 July 2000 through 4 August 2000, San Diego, CA, Conference code: 62639
Identifier: 235792
Keywords: Safety · Algorithms · Anthropometry · Automobile driver simulators · Automobiles · Computer aided design · Impact testing · Mathematical models · Musculoskeletal system · Computer aided vehicle design · Human models · Human seated postures · Ergonomics


Prediction and assessment of seated postures are essential for ergonomic vehicle design whereas dynamic seat interactions are essential for impact conditions. This paper presents seat models and human models for both applications. An interface has been developed to convert RAMSIS human models and postures to MADYMO. Static seat interaction analyses with RAMSIS provide estimated postures and a qualitative comfort assessment. MADYMO simulations allow analysis of required muscular joint torques as well as seat contact forces and pressures. An example is included where a realistic posture is derived to simulate rearward impact loading.