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Design method for reducing product appearance wind resistance

A design method and air resistance technology, applied in design optimization/simulation, geometric CAD, etc., can solve problems such as complex methods

Inactive Publication Date: 2020-01-14
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above methods are very complicated, based on mathematical algorithms, the requirements for designers are very high, and they are extremely professional

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A design method for reducing the wind resistance of a product shape, wherein a bucky ball is used to make a target model to be designed, blowing air is continuously applied to the target model, and the wind force gradually changes the shape of the target model to obtain a new model shape. At the same time, during the blowing process, the camera equipment is used to record the change process of the target model to obtain deformation data.

[0019] Bucky balls are also called magnetic balls. With the help of the magnetic field characteristics of metal balls, any shape can be combined. Choose magnetic balls with small diameters, such as 1MM or 3MM directly. The smaller the diameter, the finer it is. The recommended size of the target model to be designed is 1:1. Use a large number of magnetic balls with small diameters. The effect is the same as that of mud and can be shaped into any shape. It can be added directly in the medium. In order to reduce the amount, you can fill...

Embodiment 2

[0022] A design method for reducing the wind resistance of a product shape, wherein a target model to be designed is made with dough or mastic or mud or plasticine, blowing air is continuously applied to the target model, and the wind force gradually changes the shape of the target model to obtain a new model shape. At the same time, during the blowing process, the camera equipment is used to record the change process of the target model to obtain deformation data.

[0023] Dough or clay or mud or plasticine have similar plasticity and can be combined into any shape. The recommended size of the target model to be designed is 1:1. In order to reduce the amount, you can fill it with a small hard object, wrap the dough or clay or mud or plasticine around the filling, and wrap the breathable around the finished model Layer - plastic film (you can also put the plastic film in the inner layer of the mold and then fill it with dough or mastic or mud or plasticine). The role of the p...

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PUM

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Abstract

The invention discloses a design method for reducing product appearance wind resistance, which comprises the following steps: manufacturing a to-be-designed target model by using a plastic material, continuously blowing air to the target model, and gradually changing the shape of the target model by wind power to obtain a new model shape. A to-be-designed target model is made of a plastic material, a wind blowing model is used for directly generating wind resistance, the wind resistance can remodel the model, the remodeling process is the process of reducing the wind resistance, deformation data is obtained to provide data support for subsequent design, and the subsequent design workload and difficulty are reduced.

Description

technical field [0001] The invention relates to the field of product appearance design, in particular to a design method for reducing the wind resistance of product appearance. Background technique [0002] Wind resistance is a problem that must be considered in the shape design of moving objects in the air. The traditional wind resistance reduction design is mainly to design the surface of the object into a streamlined shape based on mathematical principles, modeling and simulation, for example: Xu Ping, Tian Hongqi, 2007 paper, The design method of the head shape of the streamlined train is proposed, which uses NURBS curves to design the shape line and uses 3D NURBS surfaces to describe the complex 3D curved surfaces. According to the design requirements of the streamlined train head shape, the basic control profile is generated first, and the intermediate control profile is automatically generated as needed; some profile lines are dynamically modified in space so that all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/15
Inventor 于复兴索依娜李杰杨爱民邱志祺
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY