Analysis Methods for Studying the Mechanical Properties of Air Bullet
The mechanical performance analysis of pneumatic ball valve mainly includes three methods: theoretical analysis, numerical calculation and experimental measurement.
1. The theoretical analysis method can use analytical method or graphical method to calculate the approximate solution of the pneumatic ball valve with simple shape. However, it is difficult to calculate the stiffness of the pneumatic ball valve with complex shape by theoretical analysis method. Moreover, the analytical solution obtained from theoretical analysis is difficult to deeply analyze the influence of nonlinear factors on the mechanical properties of pneumatic ball valves.
2. The mechanical properties of pneumatic ball valves can be obtained by the test method, but representative samples shall be provided during the test. In addition, it is difficult to adjust the parameters of the pneumatic ball valve during the test, which brings great difficulty to the design of the air spring, not only prolonging the development cycle, but also increasing the design cost.
3. At present, the numerical calculation method for analyzing the mechanical properties of pneumatic ball valves has been paid attention to and applied in practice at home and abroad. The working performance of pneumatic ball valve follows the basic mechanical law. With the development of computational science, the numerical analysis of pneumatic ball valves using finite element method has been developed. The finite element numerical analysis of pneumatic ball valve involves material nonlinearity, geometric nonlinearity and contact problems, which is a triple nonlinear finite element problem.