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

A Method for Analyzing Assembly Deviation of Composite Flexible Parts

A technology of composite materials and flexible parts, applied in instrumentation, design optimization/simulation, calculation, etc.

Inactive Publication Date: 2019-03-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the assembly deviation exceeds the limit due to the lack of consideration of the layering angle error of the composite material flexible part in the analysis of the assembly deviation of the existing flexible parts. Under the premise of small angle error, a method for composite material parts is proposed. At the same time, it is a practical composite material flexible parts assembly deviation analysis method that considers the force changes in the compression and release process of parts passing through the positioning point in the assembly deviation analysis of flexible parts, so that the deviation prediction of composite flexible parts assembly is more accurate and more in line with engineering actual

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
  • A Method for Analyzing Assembly Deviation of Composite Flexible Parts
  • A Method for Analyzing Assembly Deviation of Composite Flexible Parts
  • A Method for Analyzing Assembly Deviation of Composite Flexible Parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] Such as Figure 8 shown.

[0042] A method for analyzing assembly deviation of composite material flexible parts, which includes the following steps:

[0043] (1) Collect data to obtain the initial manufacturing deviation of composite flexible parts A and B and alpha 1 、α 2 、α 3 ,...,α n , β 1 , β 2 , β 3 ,...,β m ;in Respectively represent the manufacturing deviation of parts A and B passing through the constraint positioning point; represent the manufacturing deviation at the assembly connection points of composite flexible parts A and B respectively; α 1 ~α n and beta 1 ~β m Indicates the actual laying angle error of each layer of composite flexible parts A and B, that is, the difference from the nominal angle, where the subscripts m and n represent the number of layers of composite flexible parts A and B respectivel...

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 provides a composite material flexible part assembling deviation analysis method. The method comprises the steps of: 1, collecting data and obtaining initial manufacture deviations of composite material flexible parts; 2, extracting corresponding super-element rigidity matrixes by using finite element software; 3, establishing a part rigidity matrix model based on fiber reinforced composite material lay-up angle deviations and defining super-element rigidity matrixes; 4, performing determinative location on the flexible parts based on rigid body models; 5, adding an over-location clamp; 6, clamping assembling connecting points of the composite material flexible parts to nominal positions via assembling pressing force; 7, forming an assembling body when the composite material flexible parts arrive at the nominal assembling positions by the action of the assembling pressing force; 8, determining a rebound deviation; 9, finally releasing the over-location clamp to obtain a rebound deformation deviation, and obtaining the final rebound deviation of the assembling body. The method can determine the influence of composite material lay-up angle deviations on flexible assembling body deviations and thus improve the engineering application scientificity.

Description

technical field [0001] The invention relates to a composite material technology, in particular to a composite material flexible part assembly size deviation prediction technology, in particular to a composite material flexible part assembly deviation analysis method considering the composite material layup angle error. technical background [0002] Nowadays, as an advanced material, fiber-reinforced composite materials are becoming more and more popular in the manufacturing industry due to their advantages such as high specific strength and specific stiffness. Compared with traditional metal parts, composite parts often have better mechanical properties while greatly reducing weight. The layering of fiber-reinforced composite materials in the manufacturing process will directly determine the performance of the material, and due to the characteristics of its manufacturing process and the particularity of the shape of the parts, there will inevitably be deviations in the layer...

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 Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/23G06F2111/10
Inventor 王志国王焱张玮刘霞张永健苏成阳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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