CAJ | 학술논문

研究了肌肉主动力有限元模型的力学性能与稳定性，使其适用于头颈部动力学响应的仿真研究.运用准线性黏弹性被动单元与 Hill 主动单元相耦合的方法，建立了兔子胫前肌的有限元仿真模型.对比Myers实验数据验证了该模型在不同应变率下离心收缩的应力应变特性.同时研究了等长收缩与轴向压缩模式下的肌肉的力学特性.仿真结果表明，仿真模型与实验输出应力应变曲线具有较好的一致性，在相同应变情况下，最大应力误差仅为0.07 MPa.该模型具有较好的计算稳定性与生物逼真度，能够满足人体颈部肌肉建模的需求.
연구료기육주동력유한원모형적역학성능여은정성，사기괄용우두경부동역학향응적방진연구.운용준선성점탄성피동단원여 Hill 주동단원상우합적방법，건립료토자경전기적유한원방진모형.대비Myers실험수거험증료해모형재불동응변솔하리심수축적응력응변특성.동시연구료등장수축여축향압축모식하적기육적역학특성.방진결과표명，방진모형여실험수출응력응변곡선구유교호적일치성，재상동응변정황하，최대응력오차부위0.07 MPa.해모형구유교호적계산은정성여생물핍진도，능구만족인체경부기육건모적수구.
This paper analyzed the mechanical characteristics and dynamic stability of the finite element muscle model with activation behavior in order to better apply it in the simulation of head-neck dynamic re-sponse.A coupling constitutive material combining quasi-linear viscoelastic element and Hill type element, representing the passive behavior and active behavior respectively,was applied to the rabbit tibialis anteri-or FE model.The model was validated with eccentric contractions tests under different strain rates pub-lished by Myers.The mechanical characteristics of the muscle were also analyzed under isometric contrac-tions and axial compressions.The results have shown that the strain-stress characteristics are consistent with the reference tests and the maximum stress differences are less than 0.07MPa under the same strain condition.This constitutive model has a good stability and biofidelity that can fulfill the requirement of neck muscle system modeling for biomechanical study.