Hydrodynamic Characteristics Analysis And Configuration Optimization Of Superelastic Hydraulic Reservoir

Hydraulic system because of its high power to weight ratio,fast response and other advantages,widely used in heavy-duty robots,large carrying equipment and aircraft and other high-end mobile equipment fields,hydraulic system is the core of its high-power drive.The lightweight design of hydraulic components and systems not only improves the endurance of mobile equipment,but also improves the mobility of mobile equipment,so as to achieve the effect of energy saving and emission reduction,the hydraulic reservoir is one of the most potential components of hydraulic system,so the lightweight design of hydraulic reservoir can improve the performance of hydraulic system.In addition,the traditional open hydraulic reservoir is connected with the atmosphere,and the gas moisture is easy to enter the oil,which accelerates the oxidation and deterioration of the oil,shorens the service life,increases the replacement frequency,and leads to environmental pollution.Therefore,it is urgent to use new principles,new materials and new technology to carry out revolutionary design of traditional metal hydraulic reservoir.Based on these proposing a kind of closed superelastic hydraulic reservoir made of non-metallic rubber material,and its performance analysis and configuration optimization are carried out.The main research contents are as follows:Firstly,based on the working principle of the closed hydraulic reservoir,the basic configuration of the non-metallic superelastic hydraulic reservoir is established,it includes determining the shape of the reservoir box,analyzing the advantages and disadvantages of different shapes of the reservoir box,comparing the advantages and disadvantages of the combination of the reservoir box based on the finite element analysis,determining the remaining components outside the reservoir box,using the topology optimization principle to reduce the quality of the basic configuration,determining the parameters and making the parallel hydraulic reservoir configuration of the super elastic hydraulic reservoir prototype.Secondly,obtaining the material parameters of the non-metallic rubber material used to make the reservoir box by experimental test,then establishing the fluid-structure coupling model of the interaction between hydraulic oil-reservoir box and upper and lower end caps,then using the finite element software to analyze the hydrodynamic characteristics of the super elastic hydraulic reservoir and building a test platform for hydraulic system for carrying out the hydraulic characteristic experiment of the hydraulic reservoir prototype in order to verify the reliability of the finite element analysis results.In addition,the prototype was tested to obtain the dynamic characteristics of the hydraulic reservoir.Based on the test results,the existing problems were proposed to provide the analysis basis for the optimization of the hydraulic reservoir configuration.Finally,based on the analysis of finite element,calculation and experimental data,in view of the actual working characteristics of the prototype under the existing basic configuration,the influence of its own parameters on the optimization objectives was analyzed,and the configuration optimization of the reservoir body was carried out to achieve the optimal performance.The special volume super elastic reservoir in this paper can open up a new way for lightweight,green and high efficiency of hydraulic components and provide a theoretical reference for different requirements of hydraulic reservoir design methods.