A simulation modeling method of wheel rim

Abstract

The invention discloses a simulation modeling method of a wheel rim, belonging to the technical field of computer-aided engineering, comprising the steps of establishing a preliminary model of the wheel rim; the initial model of the rim is simplified and the loading area of radial force is cut on the rim body and the retaining ring respectively under the radial load condition. The contact relationship between the mating surfaces in the rim model is established. The contact relationship between rim and hub mating surface is established. A second-order tetrahedral element is used for mesh generation. Bolt pre-tightening force is applied: setting two load steps, setting the magnitude of the pre-tightening force in the first load step, and setting the magnitude of the pre-tightening force in the second load step as lock; boundary conditions are applied: in the second loading step, the constraint and force of radial load or bending load are applied in the corresponding area, and the finiteelement model of the rim assembly is established. In the process of rim modeling, the pre-tightening force of the rim, hub and hub mounting bolt is taken into account, which makes the finite element model of rim assembly more consistent with the actual situation and the analysis results more accurate and reliable.

Description

technical field [0001] The invention relates to the technical field of computer-aided engineering, in particular to a simulation modeling method of a wheel rim. Background technique [0002] As the moving part of the forklift, the rim of the forklift bears a huge force during the use of the forklift. Its reliability is very important and its strength is very high. Therefore, it is necessary to use computer-aided engineering (CAE) to model and simulate the rim itself. to aid in design. [0003] In the existing forklift rim simulation modeling method, only the rim itself is modeled, and the considered parts include the rim body, web plate and retaining ring, and constraints or loading are carried out at the mounting bolt holes of the web plate, while ignoring the Wheel hub assembled with rim. Its defects are as follows: firstly, if the bolt mounting holes of the web plate are directly constrained or loaded, the analysis results of the inner ring of the web plate will not mat...

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Problems solved by technology

Its defects are as follows: firstly, if the bolt mounting holes of the web plate are directly constrained or loaded, the analysis results of the inner ring of the web plate will not match the reality, and the effect of the hub on the web plate cannot be reflected; secondly, it does not consider Bolts, the effect of bolt pretightening force on the web, especially the bolt holes of the web cannot be obtained

Therefore, the existing forklift rim simulation modeling method does not consider the wheel hub and bolt pre-tightening force in the modeling, which leads to the fact that the analysis results of the web plate are inconsistent with the actual situation, and cannot reflect the stress of the web plate bolt holes. Check the strength of the plate

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