【摘要】 将人体作为粘弹体,以大腿截面为例,对其受到压力长筒袜束缚后的压力分布进行有限元建模。基于大腿股动脉止血点确定了大腿截面位置,使用三维人体扫描仪对样本腿部形态进行扫描,得到下肢大腿根部标准截面形态及标准曲线。根据标准曲线拟合出大腿根部截面曲线的二次方程。将得到的标准曲线导入ABAQUS软件中对大腿截面进行有限元建模,得到压力分布云图,预测压力分布的规律,并使用两款相似类型的压力长筒袜进行有限元模拟以验证预测模型的可信性。结果表明,在服装压力的研究中可以将人体视为粘弹体,建立的大腿截面非线性粘弹性有限元模型可有效地预测压力分布。该方法为建立下肢压力服装的压力预测模型提供了基础。更多还原

【Abstract】 Takeing the pressure distribution of the thigh cross section which is bounded by compression stockings,has been studied by finite element modeling in this paper. Taking the human body as a viscoelastic body,by comfirming the thigh section according to the thigh artery bleeding point and scanning the morphological characteristics of sample’ legs by 3D body scanner the standard cross section shape and curve of lower thigh root are obtained. Then the quadratic equation of thigh root’s section curve is established according to the standard curve. The standard curve has been imported into ABAQUS software to get the finite element model of thigh section and the pressure distribution nephogram,which predictes the pressure distribution principle. Finally,the credibility of the prediction model has been verified by finite element simulation with two similar types of stockings. Conclusion: The human body can be regarded as a viscoelastic body in the research of clothing pressure. So that it is effective to predict the pressure distribution by setting up a nonlinear viscoelastic finite element model of thigh cross section,which establishes the theoretical basis for building a prediction model of pressure distribution applied to lower limb compression garment.更多还原