Dynamic Analysis Of Fluid-Structure Interaction Of Bionic Pipeline Dynamics Model

In recent years,the vigorous rise of interdisciplinary subjects has attracted the attention of many outstanding scholars.Bionics as one of the best representative,based on the combination of biology and technology.Biomimetic mechanics,as one of the branches,mainly studies and imitates the static properties of the general structure and fine structure of the organism,as well as the relative motion of the components of the organism in vivo and the dynamic properties of the movement of the organism in the environment.With the introduction of "mechanical engineering and health science" as one of "a series of fields of special significance at present" proposed by the bioengineering group of the American science research council in 1985,mechanical simulation technology of physiological circulatory system,an important component of the basic theory of biomechanics,has become an important subject of concern.It is well known that the human body is the optimal evolutionary structure,so the human blood vessel is the optimal structure of the pipeline.It can not only provide data support for the prevention,diagnosis,treatment and monitoring of cardiovascular diseases in clinical medicine,but also provide theoretical support for the optimization of bionic pipeline system,which plays an appreciable role in reducing viscosity and drag,noise and vibration of modern transport pipeline.The text is divided into 6 chapters.Chapter 1 mainly expounds the research source and research significance,explains the development process and current research status of the vascular constitutive model,the origin of modern hydrostatic fluid pipeline systems,and domestic and foreign research situations,and discusses the points of research that are different from those in the past.And encountered difficult points;Chapter 2 explains the physiological knowledge and the theoretical basis of continuum mechanics,establishes a vascular constitutive model under the strain energy density function,reveals the most essential stress-strain relationship of the tube wall,and analyzes the characteristic parameters on the tube.The influence of wall mechanical characteristics;Chapter 3 first introduces the water hammer theory and the classical equations of fluid-solid coupling of pipelines.Substituting the conclusions from the previous chapter into the pipeline dynamics model to obtain the equation 14 of the bionic pipeline,and analyzing the amplitude frequency of a single bionic straight pipe Response characteristics;Chapter 4 synthesizes the conclusions of the previous two chapters,establishes a bionic piping system,and solves the transfer matrix and state vectors of straight piping systems,parting piping systems,and shunt piping systems under specific boundary conditions;Chapter 5 designs the bionic pipeline test.The theoretical derivation may be combined with the actual situation to reproduce the test as much as possible.The fitting test results are compared with Chapter 3;Chapter 6 Owned paper main contents,follow-up study of fluid-structure interaction Bionic pipeline system development put forward some prospects.