A Design Optimization Method for Composite Structures with Holes Based on Geodesic Distance

A composite material and structural design technology, applied in design optimization/simulation, geometric CAD, special data processing applications, etc., can solve problems such as structural design of composite materials that are not considered, to solve the problem of fiber angle design, improve mechanical properties, structure The effect of increased stiffness

Active Publication Date: 2020-07-10
HUAZHONG UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Shepard interpolation involved in the above method is based on Euclidean distance, which can only solve the design of composite material structures without holes, but does not consider the design of composite material structures with holes

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 Design Optimization Method for Composite Structures with Holes Based on Geodesic Distance
  • A Design Optimization Method for Composite Structures with Holes Based on Geodesic Distance
  • A Design Optimization Method for Composite Structures with Holes Based on Geodesic Distance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0042] Such as figure 1 As shown, a geodesic distance-based design optimization method for composite material structures with holes provided by the embodiment of the present invention includes the following steps:

[0043] S1 uniformly defines a series of discrete design points p within the solid region of the porous composite structure i , and set each design point p i fiber angle θ i The i...

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 belongs to the field of composite structure design and optimization, and particularly discloses a porous composite structure design and optimization method based on geodesic line distances. The method includes the following steps of evenly defining discrete design points in an entity of a porous composite structure, setting the initial values of fiber angles of the design points, conducting mesh dividing on the structure, determining coordinates of all unit central points, calculating geodesic line distances between all the design points and all the unit central points, obtainingthe fiber angles of all the unit central points on the basis of the geodesic line distances, establishing a rigidity matrix, calculating a whole displacement vector, obtaining sensitivity according to the whole displacement vector, and updating the fiber angle theta i until the optimization end conditions are met. By calculating the geodesic line distances between the unit central points and thedesign points, on the basis of the geodesic line distances, the continuous variable-angle fiber layout of the porous composite structure is obtained and improved, and the structure performance is improved.

Description

technical field [0001] The invention belongs to the field of structural design optimization of composite materials, and more specifically relates to a method for structural design optimization of composite materials with holes based on geodesic distance. Background technique [0002] Compared with the conventional constant stiffness composite material structure, the curved fiber composite structure has extremely high designability. In addition to conventional structural shape design, the design of composite structures also includes the design of fiber layout. For example, by designing the laying angle of the fibers, the structure has the characteristics of variable stiffness, thereby obtaining better structural performance. With the development of automatic fiber placement and additive manufacturing technology, curved fiber composite structures are gradually used in aerospace, automotive, high-end equipment and other fields. [0003] For the design of fiber angle layout 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 Patents(China)
IPC IPC(8): G06F30/17G06F30/23G06F111/10
CPCG06F30/17G06F30/23G06F2111/10
Inventor 夏奇田野史铁林
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap