A data processing method for nonlinear stiffness of automobile powertrain mount system

Abstract

The invention relates to a method for processing nonlinear stiffness data of suspension systems of power assemblies of automobiles. The method includes steps of 1), enabling a data input module to input suspension static stiffness data, suspension static force data of the power assemblies, maximum displacement data of compression directions under extreme working conditions and maximum displacement data of stretching directions under the extreme working conditions into a data processing module; 2), enabling the data processing module to determine static points; 3), enabling the data processing module to adjust correction parameters of the compression directions and correction parameters of the stretching directions until nonlinear stiffness curve data meeting limit requirements of the extreme working conditions are obtained; 4), enabling the data processing module to output expressions of nonlinear stiffness curves to a data output module; 5), utilizing data of the expressions of the nonlinear stiffness curves for designing the suspension systems of the power assemblies of the automobiles by the aid of the data output module. Compared with the prior art, the method has the advantages of capability of effectively reducing computation workload, simplicity and convenience in operation, and the like.

Description

technical field [0001] The invention relates to a method in the field of an automobile powertrain mount system, in particular to a method for processing nonlinear stiffness data of the automobile powertrain mount system. Background technique [0002] With the advancement of science and technology and the improvement of the quality of life, people have higher and higher requirements for the quality of cars, and good vibration and noise are becoming an important indicator for customers to evaluate cars. There are many reasons for automobile vibration and noise, among which the powertrain is the main source of vibration and noise. The suspension system is the main system for isolating vibration, and its design will directly affect the ride comfort performance of the car. The nonlinear stiffness design of the mount system is an important content in the design of the mount system, and a reasonable mount system nonlinear stiffness (Nonlinear stiffness) design can achieve good vib...

AI Technical Summary

Problems solved by technology

In the process of designing the nonlinear stiffness of the powertrain mount, the working conditions of different elastic principal axes are different, and the corresponding limit requirements are also different. Therefore, the selection of the nonlinear stiffness of the mount and the coordinates of the inflection point should be based on the actual technology of the mount. requirements, the computational workload is heavy

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