Modeling of Multibody-dynamics of Superior Members under Occlusion

用肌电位仪测量牙颌咬合活动的表面肌电位。在本工作中测量了四种肌肉，分别是左右咬肌和牛颈肌。在工作侧观察到较高的激活，并将这些参考数据应用于有限元方案中肌肉增量本构律的开发。对于有序的咬合活动，这一规律应该足以描述没有任何惯性的时间依赖力学，结果表明，肌肉的自然长度改变为循环加载，然后迟滞循环趋于平稳

Surface muscle potentials for occlusal activities in dentistrywere measured by the muscle potential instrument. Four kinds of muscles were taken upfor measurement in the present work, which are the right-and-left masseter and cowlmuscles. The higher activation was observed in the work-side and these reference datawere applied to development of an incremental constitutive law of muscle employed in afinite element scheme. For ordinal occlusal activities, this law should be sufficientto describe the time-dependent mechanics without any inertia, and the results newlysuggest that natural length of muscle was changed to a cyclic loading and then thehysteresis loop becomes stationary