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

Uncertainty analysis method for predicting performance of periodic material

A periodic material, uncertain technology, applied in the field of effect analysis, to achieve the effect of great safety and convenience advantages

Active Publication Date: 2017-05-10
BEIHANG UNIV
View PDF8 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to establish an uncertainty analysis method for predicting the performance of periodic materials. The elastic modulus of periodic materials is calculated by finite element calculation of typical microstructure cells, and an appropriate period is applied in the analysis. Periodic conditions and boundary conditions to simulate the internal displacement and deformation relationship of periodic materials

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
  • Uncertainty analysis method for predicting performance of periodic material
  • Uncertainty analysis method for predicting performance of periodic material
  • Uncertainty analysis method for predicting performance of periodic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Such as Figure 5 As shown, the present invention predicts the uncertainty propagation analysis method of periodic material performance, comprises the following steps:

[0035] (1) For the actual target material, according to the microstructure arrangement law in its internal mesoscale, select a suitable cube block as an effective cell, as follows: figure 1 The configuration shown is taken as an example. The selected typical cells can be reorganized in the three-axis direction to reproduce the periodic configuration distribution inside the material. At the same time, the cell should meet the symmetry requirements of the three directions in order to apply subsequent conditions.

[0036] (2) For the typical cells obtained in the previous step, establish a digital geometric model in the ANSY software pre-processor, take the cube vertices a...

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 an uncertainty analysis method for predicting the performance of a periodic material. The method first utilizes a theory to derive and design a mesoscopic microstructure cell loading boundary condition, and proves that the equivalent performance obtained by finite element simulation calculation can represent the equivalent performance of the whole material under the condition. During the process of obtaining an equivalent elasticity modulus of the material by analyzing a typical micro unit cell scale configuration of the material, the invention takes full consideration of the uncertainty of cell dimension and base material performance and analyzes propagation of the uncertainty in the macroscopic and mesoscopic equivalent processes to obtain the actual fluctuation range of the performance of the material and to ensure security of the results.

Description

technical field [0001] The invention relates to the field of uncertain equivalent analysis methods for periodic materials, in particular to an uncertainty analysis method for predicting the performance of periodic materials; Background technique [0002] Materials commonly used in engineering practice with microstructures are generally ordered or disordered lightweight porous metal or non-metallic materials, such as truss-like materials, honeycomb materials and foam materials. Due to their light weight, high specific strength, high specific stiffness and multi-functionality, this kind of material has gradually been popularized and applied in practical engineering. The characteristics of ordered lightweight porous materials can be expressed as the periodic arrangement of typical microstructure cells in different directions. Through the analysis of microstructure cells, the macroscopic mechanical properties of the entire material, such as elastic modulus, can be obtained. [...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 王磊蔡逸如王晓军刘易斯刘东亮夏海军耿新宇
Owner BEIHANG 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