Point contact elastic flow lubrication simulation analysis method based on ADINA secondary development

Abstract

The invention relates to a point contact elastic flow lubrication simulation analysis method based on ADINA secondary development in the technical field of simulation analysis and other data processing. The invention adopts a fluid-solid coupling method to perform elastic flow lubrication analysis, and the method comprises the following steps: 1, performing point contact model equivalence: based on a point contact elastic flow lubrication experiment model, equivalently forming equivalent elastic sphere and wireless large rigid flat plate contact; 2, establishing an elastic flow model; 3, drawing a model grid; 4, writing in a roughness model; 5,conducting secondary development on the FSI module of the ADINA, and parameters of the non-Newtonian fluid effect and the heat effect are written in; 6, setting a boundary condition by ADINA; 7, performing model post-processing; 8, performing verification. According to the invention, a fluid-solid coupling method is creatively adopted to carry out elastohydrodynamic lubrication analysis, the actual situation of elastohydrodynamic lubrication is reflected more truly, and assistance is provided for providing a high-quality elastohydrodynamic lubrication design scheme.

Description

technical field [0001] The invention relates to the technical field of data processing such as fax analysis, in particular to a point contact elastohydrodynamic lubrication simulation analysis method based on secondary development of ADINA. Background technique [0002] The full name of elastohydrodynamic lubrication is elastohydrodynamic lubrication, which is lubrication with variable viscosity coefficient lubricating film and elastic deformation contact surface. For example, the lubrication when the gear meshes and the lubrication between the ball and the inner and outer rings of the ball bearing. Their common feature is that the load acts on a small contact area to form a high-pressure zone, which changes the viscosity coefficient of the lubricant and elastically deforms the contact surface. Accurately grasping the condition of EHL can significantly improve the service life of bearings, gears and other parts. [0003] At present, there are two main analysis approaches f...

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a point contact elastohydrodynamic lubrication simulation analysis method based on the secondary development of ADINA, by carrying out the secondary development of ADINA and the writing of MATLAB roughness data, comprehensively considering the thermal effect, rheological effect and roughness effect, thus effectively simulating the elastohydrodynamic lubrication in actual conditions, and verified the correctness of the simulation method through point contact elastohydrodynamic lubricant film thickness and friction coefficient experiments, and provided a basis for analysis methods of other complex elastohydrodynamic models. The basis of the method has been clarified, and the problems of inability to obtain accurate solutions and poor adaptability of existing technologies have been solved

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