智能材料模拟肌体组织柔顺性特征研究

Research on Smart Material Simulating Tissues Compliance Characteristic

针对微创手术训练中现存的柔顺性触觉再现设备大多是机械接触,模拟肌体组织柔顺性特征时容易产生失真的问题,开展了液体智能材料模拟肌体组织的柔顺性特征研究.简单介绍了液体智能材料的流变学特性,进行了体现其柔顺性特征的压力释放实验研究,根据实验结果,利用Kelvin模型建立了其压力释放模型并进行了验证.利用不同磁场作用下液体智能材料模拟不同肌体组织柔顺性实验,建立了肌体组织压力释放模型并与相应磁场作用下智能材料模型进行了比较.结果表明液体智能材料在较大程度上能够模拟肌体组织的柔顺性特征.

Research on smart fluid material simulating tissues compliance characteristic is carried out to o-vercome infidelity in simulating tissues compliance characteristic by the existing compliance haptic devices be-cause of the mechanical contact .The rheological property of smart fluid materials is shortly introduced .An ex-periment is done on the stress relaxation which shows tissues compliance characteristic of smart fluid material . The stress relaxation model is set up on the base of the Kelvin model according to the experiment results and the validity is verified .The compliance of different tissues is simulated by smart fluid material applied by dif-ferent magnetic field .The stress relaxation models of the tissues and the corresponding smart fluid materials are set up and compared .The results indicate that tissues compliance characteristic can be simulated by the smart fluid material to a large extent .