Heat-machinery-abrasion coupling analysis numerical simulation method based on finite element

A coupled analysis and numerical simulation technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as the inability to simulate the contact wear process, and achieve the elimination of data transmission and interaction, a wide range of applications, and improved The effect of the design

Inactive Publication Date: 2013-09-04
TSINGHUA UNIV
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Problems solved by technology

Unfortunately, the current finite element software can only solve the thermo-mechanical coupling problem, but cannot simulate the wear process between contact pairs

Method used

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  • Heat-machinery-abrasion coupling analysis numerical simulation method based on finite element
  • Heat-machinery-abrasion coupling analysis numerical simulation method based on finite element
  • Heat-machinery-abrasion coupling analysis numerical simulation method based on finite element

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 As shown, the two parts constituting the contact pair in the embodiment of the present invention include a cube pad 1 (Pad) and an annular rotating disk 2 (Dish). The cube pad 1 is pressed and rotated in a ring under a set pressure of 1Mpa. Disk 2, the annular rotating disk 2 rotates at a set constant speed of 15r / s, there is no lubrication between the contact surfaces of the two parts, and the friction coefficient is 0.37. In this example, during the cycle of one revolution of the annular rotating disk 2, the cubic gasket 1 is always in a state of contact wear, while the annular rotating disk 2 is in a state of intermittent contact wear, so the amount of wear of the cubic gasket 1 is much greater than that of the annular disk in the whole process. Rotating disk 2, so in this example, only the wear of the cube gasket 1 is cons...

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Abstract

The invention relates to a heat-machinery-abrasion coupling analysis numerical simulation method based on a finite element. The method includes the following steps: establishing a finite element model; discretizing a heat-machinery-abrasion coupling process; performing heat-machinery coupling analysis by commercial finite element software; outputting a temperature field of a contact pair and a contact pressure field; calculating abrasion loss, and determining abrasion direction; outputting node abrasion loss and abrasion direction; correcting node displacement, and updating the finite element model; judging whether all the increment steps are completed or not, if not, returning to a loop operation until all the increment steps are completed, and if yes, outputting contact pressure field distribution, temperature field distribution and abrasion loss distribution which correspond to contract nodes of all the increment steps. The commercial finite element software is taken as a platform, so that the method is simple and reliable; calculation of the abrasion loss is completed inside the finite element software, so that the method is rapid and efficient. The method can be widely applied to structural analysis relating to dry sliding friction.

Description

technical field [0001] The present invention relates to a numerical simulation method, in particular to a thermo-mechanical-wear coupling analysis numerical simulation based on finite element which is suitable for simulating contact pressure between contact pairs, frictional heat generation and wear process in the dry sliding friction process of parts method. Background technique [0002] The damage of mechanical parts is often related to the friction and wear conditions between parts. Dry sliding friction and wear can cause more damage to components than other types of friction and wear phenomena. In the existing technology, the production of mechanical parts usually first designs the product according to the actual needs, and tests the product with a load. If the product fails to meet the design requirements during the experiment, redesign the product, and then carry out the test until the product is qualified. , this process not only takes a long time, but also has a re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 桂良进张方宇范子杰
Owner TSINGHUA UNIV
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