Rapid analysis method for rigidity of rubber-metal composite suspension

Abstract

The invention discloses a method for quickly analyzing the rigidity of a rubber-metal composite suspension. The method comprises the following steps: S1, setting a solving file, wherein the solving file comprises two files: a model file and a loading file, the model file comprises grid information, material information and a unit set, and the loading file comprises a boundary constraint, a load and an output; S2, creating a suspension geometric model; carrying out model pretreatment, and only reserving a suspension rubber part; s3, establishing a rubber hyperelastic constitutive model; establishing a set set according to a naming rule, and generating a model file; and S4, in the loading file, associating the model file with the loading file by modifying the associated statement, modifyingthe size and direction of the reducing amount and the loading force in the loading statement according to actual requirements, setting output, and then submitting the loading file for calculation. Themethod has the advantages of simple principle, simplicity and convenience in operation, high stability and efficiency and the like.

Description

technical field [0001] The invention mainly relates to the design field of a powertrain mount system, in particular to a rapid analysis method for the rigidity of a rubber-metal composite mount. Background technique [0002] The vibration isolation performance of the powertrain mount system directly affects the NVH performance of the vehicle. How to design the stiffness of each mount to ensure the maximum decoupling rate of the mount system and achieve the vibration isolation performance of the mount is of great significance. [0003] The existing conventional method is to conduct finite element analysis or conduct experimental testing. The method of finite element analysis is often widely used because of its low cost and less time-consuming advantages. However, when using finite element technology to simulate the mount, due to the complex structure of the mount, it is difficult to divide the hexahedral mesh, which is time-consuming and labor-intensive. At the same time, ...

AI Technical Summary

Problems solved by technology

However, when using finite element technology to simulate the suspension, due to the complex structure of the suspension, it is difficult to divide the hexahedral mesh, which is time-consuming and labor-intensive.

At the same time, due to the hyperelasticity and large deformation characteristics of rubber, a special material, it is easy to cause mesh distortion, which makes the calculation unable to converge

The suspension structure has strict requirements on rigidity, often in the process of product development, it is necessary to repeatedly carry out structural adjustments, and the calculation task is heavy

There are many working conditions to be considered in the calculation process, and the boundary setting and loading are cumbersome and error-prone

[0004] The traditional method mostly focuses on the stiffness matching and optimal design of the mount, but for the specific calculation of the mount stiffness, there are no specific analysis methods and steps, only the results are shown

Images