J021016 呼吸系変形シミュレーション手法の開発([J021-01]生命体統合シミュレーション(1))

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  • J021016 Biomechanical simulation of breathing activity

抄録

The present work aims to establish a computational model for simulating human respiration. A finite element chest model was constructed including sternal, rib, vertebral bones and intercostal muscles, diaphragm, and furthermore, heart and lung. Transversely isotropic hyperelastic muscle model of Hill-type was adopted as the constitutive relation of intercostal muscles and diaphragm. Heart and lung were modeled as hyperelastic and porous hyperelastic materials, respectively. The contraction of intercostal muscles and diaphragm reproduced the chest respiratory movement. The results show that the contraction of intercostal muscle generates the moment about costovertebral joint and thus the direction of the muscle fiber on the chest movement is influential. By introducing the experimental data on the fiber directions (Loring, 1992), the chest deformation modes were obtained compatible with the conventional inference. The intrathoracic and intrapulmonary pressures were obtained consistent with clinical observation. Although the effectiveness of the proposed computational model was demonstrated, further improvement is scheduled to introduce lung airway system.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _J021016-1-_J021016-4, 2013

    一般社団法人 日本機械学会

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