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脉搏波本构关系实验研究的探索
Exploration of experimental study on constitutive relations of pulse waves
【摘要】 脉搏波本构关系决定着脉搏波的传播特征。如何通过实验研究来确定脉搏波本构关系,以及如何通过这些方法从现有文献数据来获得脉搏波本构关系,是当前研究的核心之一。本文中探索了3个可行途径:(1)由实测脉搏波波速对压力的关系C(p)进行反分析(无创法);(2)直接对脉搏波p-V本构关系进行实测(有创法);(3)由一系列实测脉搏波波形进行Lagrange反分析(无创法)。采用上述方法,根据现有文献数据,发现由C(p)关系的Rogers-Huang简化式可推得指数型p(V)本构关系;由MK-Hughes式可推得对数型p(V)本构关系。脉搏波传播特性随非线性本构参数发生显著变化。按中医体质分类观点,相应的脉搏波本构关系原则上也有不同类型,因人而定。在这个意义上,脉搏波的Lagrange反分析具有广阔发展前景,但它对正确选择测点和提高测量敏感性和精度等方面提出了更高要求。
【Abstract】 The pulse wave constitutive relation determines propagation characteristics of pulse wave. How to determine it through experimental studies, and how to obtain it from the existing literature data through these methods, is one of the cores of the current research. Three feasible approaches were explored:(1) inverse analysis of the relationship C(p)(non-invasive method),(2) direct measurement of pulse wave p-V relationship(invasive method), and(3) Lagrange inverse analysis of a series of measured pulse wave(non-invasive method). By using the above methods and according to the existing literature data,it is found that the exponential p(V) constitutive relation can be deduced from the Rogers-Huang simplified formula of C(p)relation. The logarithmic p(V) constitutive relation can be deduced from the MK-Hughes equation. Pulse wave propagation characteristics vary significantly with nonlinear constitutive parameters. According to the viewpoint of body constitution classification in traditional Chinese medicine(TCM), the corresponding constitutive relation of pulse wave also has different types in principle, depending on people. In this sense, the Lagrange inverse analysis of pulse wave has a broad development prospect, but it puts forward higher requirements on the correct selection of measurement points and improving the sensitivity and accuracy of measurement.
【Key words】 pulse wave; constitutive relation; experimental study; inverse analysis; traditional Chinese medicine(TCM);
- 【文献出处】 爆炸与冲击 ,Explosion and Shock Waves , 编辑部邮箱 ,2022年12期
- 【分类号】R2-03;O347.4
- 【下载频次】16