Method for predicting average pressure at hose top based on elastic potential energy of hose top materials

To build a mathematic model for predicting the average pressure at the hose top,the presure generation mechanism at the hose top was elucidated from the perspective of the law of conversation of energy. It is considered that pressure is equal to the ratio of the change value of potential energy to the change value of volume. Based on this theory,a mathematic model has a been built for predicting the average pressure at the hose top,and experiments were conducted to verify the model. The relationship between the average pressure at the hose top,the elastic potential energy of the hose top material,and the cross-sectional shape of the lower leg at the hose top was determined,and it was found that the average pressure at the hose top is only related to the hose welt circumference,calf circumference and elasticity of the hose top material. The test results showed that this model can be used to predict the average pressure at the hose top,simplify the calculation method of the pressure at the hose top,and provide a theoretic foundation for accurate prediction for the pressure distribution at the hose top.