| 제목 |
Wobbling Mass를 고려한 인체 진동 모델의 개발 |
| 분야 |
진동ㆍ소음 |
| 언어 |
Korean |
| 저자 |
김영은(단국대학교), 백광현(단국대학교), 최준희(단국대학교) |
| Key Words |
Human body model(인체모델), Vibration(진동), Wobbling mass(요동하는 질량), Optimization technique(최적화기법), Disc(추간판), Resonance(공진) |
| 초록 |
Simple spring-damper-mass models have been widely used to investigate whole-body vertical biodynamic response characteristics of the seated vehicle driver. Most previous models have not considered the effect of wobbling masses; i.e. heart, lungs. liver, intestine, etc. In this study, 4-DOF seated driver model including one non-rigid mass representing wobbling visceral mass. 5-DOF model including intestine, and 1O-DOF model including five lumbar vertebral masses were proposed. The model parameters were identified by a combinatorial optimization technique, simulated annealing method. The objective function was chosen as the sum of error between model response of seat-to-head transmissibility and driving point mechanical impedance and those of experimental data for subjects seated erect without backrest support. The model response showed a good agreement with the experimental response characteristics. Using a 19-DOF model, calculated resonance frequency of lumbar spine at 4Hz was matched well with experimental results of Panjabi et al. |
| 원문(PDF) |
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