Total stiffness calculation method for Z-shaped plate spring composite air suspension

The invention relates to a method for calculating the total rigidity of a Z-shaped plate spring combined type air suspension, which comprises the following steps of: taking material mechanics as a theoretical basis, firstly calculating the rigidity CBD of a Z-shaped guide spring at an axle point by considering the rigidity of the rear part of the Z-shaped guide spring, then converting the rigidity of the air spring into the rigidity CBA at the axle point, and finally calculating the total rigidity CB of the Z-shaped plate spring combined type air suspension. According to the method, deformation of all sections of the Z-shaped guide spring is fully considered, the calculation method capable of achieving parameterization is provided, and compared with a traditional calculation method, the calculation precision is improved. Compared with a finite element calculation method and a vehicle dynamics calculation method, the method has similar precision, but a parameterized calculation method can greatly reduce the ca