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Particle impact aluminum alloy surface morphology prediction simulation method based on SPH method

A technology of aluminum alloy surface and simulation method, which is applied in design optimization/simulation, instrumentation, electrical digital data processing, etc., can solve the problems of inability to respond to multi-particles, impact polishing effect of multi-angular block particles, etc., and achieve good consistency Effect

Pending Publication Date: 2022-04-29
ANHUI UNIV OF SCI & TECH +1
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing simulation method cannot reflect the impact polishing effect of multi-particles and multi-angular block particles, and to invent a simulation method based on smooth particle hydrodynamics method for multi-particle impact workpiece surface

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  • Particle impact aluminum alloy surface morphology prediction simulation method based on SPH method
  • Particle impact aluminum alloy surface morphology prediction simulation method based on SPH method
  • Particle impact aluminum alloy surface morphology prediction simulation method based on SPH method

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. However, the scope of protection of the present invention is not limited by specific implementations.

[0029] Such as Figure 1-7 shown.

[0030] A method for predicting and simulating the surface morphology of aluminum alloys impacted by particles based on the SPH method, comprising the following steps:

[0031] Step 1: According to the actual abrasive particle size and structure, establish five three-dimensional models of structural particles, such as figure 1 shown. The particle size of abrasive particles is 1.1mm-2.3mm;

[0032] Step 2: Use 3D modeling software to establish a model of 120-200 particles impacting the workpiece. For the alumina particle impact model, 120 particles were built. For the amino molding compound pellet impact model, 200 pellets were built. The particle impact angle is set to 15°-90°; figure 2 shown.

[0033] Step 3...

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Abstract

A particle impact aluminum alloy surface topography prediction simulation method based on an SPH method is characterized in that firstly, a 120-200 three-dimensional particle impact workpiece model is established, then simulation setting and simulation solving are conducted, and a high-hardness aluminum oxide material and a medium-hardness amino molding plastic material are used as particle materials. According to a simulation result, workpiece surface particle coordinate information is read by adopting a three-dimensional interpolation principle, and a surface three-dimensional topography graph is drawn. The method has good consistency with an experimental result, and the impact morphology of the surface of the workpiece at different particle impact angles can be accurately predicted. According to the method, the high-speed impact behavior of the particles in the abrasive gas jet polishing process can be clearly displayed, so that the research on the removal mechanism of the abrasive gas jet polishing processing material is facilitated.

Description

technical field [0001] The invention belongs to the technical field of material surface polishing processing, in particular to an aluminum alloy surface treatment technology, in particular to a method for predicting and simulating the surface morphology of aluminum alloys impacted by particles based on the SPH method. Background technique [0002] As a lightweight structural material, 7075 aluminum alloy has been widely used in large aircraft structures. Meanwhile, in the aerospace industry, the surface finishing of monolithic and large aircraft structures needs to follow their milling process. However, surface finishing of aircraft structures is very difficult due to their large size and complex structure. As a new type of processing method, abrasive air jet has obvious advantages such as small cutting force, high flexibility, negligible thermal effect, and strong processing versatility. It is suitable for surface polishing of large and complex integral parts. Abrasive ai...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F119/14
CPCG06F30/23G06F2119/14
Inventor 朱延松刘云飞卢文壮杨洪涛
Owner ANHUI UNIV OF SCI & TECH