抄録
The objectives of this study are to develop and validate a simplified human body finite element (FE) model integrated with active ID muscle model, called "KIMBAR (Kinetic model Integrated with Muscles for Biomechanical Applied Research)". This model includes musculoskeletal structure and can be used with very short CPU times. Skeletal parts of this model were represented by rigid bodies connected with spherical joints. Muscle models have capabilities of force generation according to their activation levels. The KIMBAR was modeled using Hill-type muscle models with 800 muscle-tendon compartments of ID truss and seatbelt elements covered whole joints in the neck, thorax, lumber, and upper and lower extremities. This study reports validation results of KIMBAR for head-neck kinetic responses in frontal and rear impact loadings. The head-neck angles estimated from the model agreed with the experimental data in previous studies. In addition, kinetic motions due to muscle tone were represented in flexion, extension, lateral flexion, and rotation modes. Parametric studies on frontal and rear impact analysis during the kinetic motions of head-neck were conducted and found that initial muscle activation levels and head-neck postures would alter the head-neck responses in post impacts.
