Frictional resistance model for a capsule and an intestine with different central axes based on the intestinal nonlinear constitutive relationship
Frictional resistance model for a capsule and an intestine with different central axes based on the intestinal nonlinear constitutive relationship
复制标题
基于肠道非线性本构关系的不同中心轴胶囊与肠道摩擦阻力模型
DOI：
10.1016/j.triboint.2022.107603
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发表时间：
2022-05-14
影响因子：
6.2
通讯作者：
Hu，Guanyu
中科院分区：
文献类型：
--
作者：
Huang，Yi;Liang，Liang;Hu，Guanyu
磁控胶囊内窥镜在胃肠道疾病的检测方面具有广泛的应用。胶囊与肠道之间的摩擦阻力会影响胶囊的位置控制。开发了准线性粘弹性（QLV）模型来描述有限变形下兔子小肠的生物力学。当胶囊在偏离胶囊中心线的肠道内运动时，根据建立的肠道本构关系建立摩擦阻力预测模型，并通过不同直径胶囊在兔小肠内的摩擦阻力实验进一步验证该模型。该工作有助于磁控胶囊内窥镜的设计和优化。
A magnetically controlled capsule endoscopy has a broad application for the detection of gastrointestinal diseases. The frictional resistance between a capsule and an intestine will affect the position control of the capsule. A quasi-linear viscoelastic (QLV) model is developed to describe the biomechanics of small intestines of a rabbit under the finite deformation. When the capsule is moving inside the intestine whose centerline is deviated from that of the capsule, a frictional resistance prediction model is created based on the established intestinal constitutive relationship, and the model is further validated by the frictional resistance experiment for the capsules with different diameters in small intestines of a rabbit. The work can help to design and optimize the magnetically controlled capsule endoscope.