Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for creating three-dimensional microscopic cell model of composite material based on random-sequence growth method

A composite material and random sequence technology, applied in 3D modeling, image data processing, instrumentation, etc., can solve problems such as low execution efficiency, time-consuming calculation, and low fiber volume fraction

Active Publication Date: 2015-08-12
NORTHWESTERN POLYTECHNICAL UNIV
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The principle of creating the microscopic periodic somatic model of composite materials by the Monte Carlo method and the random order adsorption method is similar, so they also have the same disadvantages: the fiber volume fraction in the three-dimensional microscopic periodic somatic model created is low [Harper.et , al. Composites Science and Technology 72(2012) 225–234]
However, because each time a fiber is added, it is necessary to judge whether the fiber intersects with the existing fiber. Therefore, when the fiber volume fraction in the 3D microscopic periodic somatic model of the composite material is high, multiple fiber intersection judgments are required for each successful addition of a fiber. , consumes a lot of computing time, so the existing stochastic order adsorption method has low execution efficiency and is not suitable for creating a three-dimensional microscopic periodic cell model of randomly distributed short fiber reinforced composites with a high volume fraction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for creating three-dimensional microscopic cell model of composite material based on random-sequence growth method
  • Method for creating three-dimensional microscopic cell model of composite material based on random-sequence growth method
  • Method for creating three-dimensional microscopic cell model of composite material based on random-sequence growth method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Example 1: Take the chopped carbon fiber reinforced magnesium-based composite material (Csf / Mg composite material) prepared by the vacuum imbibition liquid-solid extrusion process as an example. In the Csf / Mg composite material, the fibers are randomly distributed in space, and the average fiber aspect ratio is 13-15. In this example, we take the minimum fiber aspect ratio as 5 and the maximum fiber aspect ratio as 15. The method proposed based on the present invention can create the microscopic periodic soma model of Csf / Mg composite material with higher fiber volume fraction, set up steps (flow chart sees attached figure 1 )as follows:

[0089] Step 1: Create the matrix of the microscopic periodic somatic model of the Csf / Mg composite material, the size is 187.5 μm×187.5 μm×187.5 μm, and the center is (93.75 μm, 93.75 μm, 93.75 μm).

[0090] Step 2: Randomly generate fiber starting points P within the composite matrix (187.5 μm × 187.5 μm × 187.5 μm) E , fiber unit ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for creating a three-dimensional microscopic cell model of a composite material based on a random-sequence growth method. According to the method, a fiber is randomly added into a substrate area, and the length of the fiber increases from zero until the fiber is crossed with an existing fiber or the length of the fiber reaches a maximal preset length. Compared with a traditional random sequence adsorption method, the method of the invention is advantageous in that only several times of judging for fiber crossing are required in successively adding one fiber, and therefore the method of the invention can simply and efficiently create the three-dimensional microscopic cell model of the composite material, wherein randomly distributed short fibers with a relatively high fiber volume fraction exist in the three-dimensional microscopic cell model of the composite material. The method of the invention can be applied for creating the three-dimensional microscopic cell model which represents the microscopic structure of the composite material. The method settles the problems of low fiber volume friction and low execution efficiency in creating a microscopic periodical cell model according to an existing method and furthermore can save relatively more computing resource.

Description

technical field [0001] The invention relates to a method for creating a three-dimensional microscopic periodic somatic model of a short fiber reinforced composite material based on a random sequential growth method, especially a three-dimensional microscopic periodic somatic model of a randomly distributed short fiber reinforced composite material with a relatively high fiber volume fraction of establishment. Background technique [0002] Short fiber reinforced composite materials have the characteristics of low density, excellent mechanical properties (high specific strength, specific stiffness, etc.), low thermal expansion coefficient and high damping performance, and have broad application prospects in the fields of automobile, aviation, aerospace and defense industries. Therefore, it is of great significance to predict the mechanical properties of short fiber reinforced composite materials, which can reduce the number of tests, save costs, and shorten the development cyc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06T17/00
Inventor 齐乐华田文龙周计明卫新亮鞠录岩
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com