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

Flexible rope modeling method based on linear interpolation shape function

A linear interpolation and shape function technology, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of large computing time, high computing resource requirements, and long time consumption, and achieve long computing time and high cost. The effect of high calculation accuracy and calculation time economy

Pending Publication Date: 2021-06-29
BEIJING MECHANICAL EQUIP INST
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Modeling helps to analyze the dynamics of the rope’s lateral and longitudinal motion and local forces. However, since flexible ropes are usually woven from organic fibers, their internal structures are very complex. Modeling methods are computationally expensive and do not provide significant gains in accuracy
At present, the commonly used rope modeling methods in the existing technology include spring damping model and nonlinear finite element element based on absolute node coordinates. The former takes a short time but has relatively poor accuracy, while the latter has high accuracy but takes a long time. Computational resource requirements are high, and it is difficult to meet the needs of engineering applications

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
  • Flexible rope modeling method based on linear interpolation shape function
  • Flexible rope modeling method based on linear interpolation shape function
  • Flexible rope modeling method based on linear interpolation shape function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] The present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0066] A kind of flexible rope modeling method based on linear interpolation shape function provided by the present invention, its specific steps are:

[0067] The first step is to use the rope configuration at a predetermined moment as the reference configuration space to identify the position of any rope point on the rope configuration at the current moment in space;

[0068] The second step is to define the Green strain tensor of the rope;

[0069] The third step is to calculate the stress of any rope poin...

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 flexible rope modeling method based on a linear interpolation shape function, and the method considers two aspects of calculation time and calculation precision. The method overcomes the defects that in the prior art, a concentrated mass method is fastest in calculation speed but low in precision, and a nonlinear finite element method based on absolute node coordinates is long in calculation time, but high in precision and the like, and a nonlinear rope unit adopting two nodes is moderate in calculation time and high in calculation precision, the method has the characteristics of calculation time economy and high precision, can meet engineering application requirements, and is a relatively reasonable choice for flexible interception net rope modeling.

Description

technical field [0001] The invention belongs to the technical field of rope modeling, in particular to a flexible rope modeling method based on a linear interpolation shape function. Background technique [0002] The flexible rope has the advantages of light weight, high strength and easy folding storage. The flexible interception net woven by flexible ropes has a large expansion area and is very easy to hook and entangle with the target. The adaptability to the shape and motion state of the target is far greater than the conventional capture method. It has been widely used in aircraft target capture. Modeling helps to analyze the dynamics of the rope’s lateral and longitudinal motion and local forces. However, since flexible ropes are usually woven from organic fibers, their internal structures are very complex. Modeling methods are computationally time-intensive and do not yield significant improvements in accuracy. At present, the commonly used rope modeling methods in...

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): G06F30/17G06F30/23G06F119/14
CPCG06F30/17G06F30/23G06F2119/14Y02T90/00
Inventor 卞伟伟侯师贾彦翔邱旭阳刘亮吕鑫
Owner BEIJING MECHANICAL EQUIP INST
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