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

Space grid-based design method of three-dimensional lattice structure

A three-dimensional lattice, lattice structure technology, applied in design optimization/simulation, calculation, special data processing applications, etc., can solve the problem of insufficient edge position processing, low designer participation, inability to lattice structure cell configuration, Problems such as cell density distribution form and structural appearance control, to achieve the effect of strong engineering practical value and reducing repetitive manual operations

Inactive Publication Date: 2018-11-13
BEIHANG UNIV
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three-dimensional lattice structure usually adopts the method of direct filling in the design area. This method has a small degree of design freedom and a low degree of designer participation. Designers cannot control the cell configuration, cell density, distribution form, and structural appearance of the lattice structure. , on the other hand, the direct filling method does not deal well with the edge position of the design area, usually resulting in incomplete cell structures or independent members, forming structural defects

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
  • Space grid-based design method of three-dimensional lattice structure
  • Space grid-based design method of three-dimensional lattice structure
  • Space grid-based design method of three-dimensional lattice structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] A method for designing a three-dimensional lattice structure based on a spatial grid in the present invention, see figure 1 As shown, it includes the following steps:

[0039] Step 1: The method proposed in this patent is implemented in the finite element software platform, but is not limited to a specific finite element software. Through the model import function of the software, the import of the three-dimensional solid model can be carried out. The initial model of the embodiment is as follows figure 2 shown;

[0040] Step 2: Decompose the structure through the geometric decomposition function, select the design area through human-computer interaction and count the number of design sub-areas N d . Such as image 3 As shown, in the embodiment, selected areas 1, 2, and 3 are design areas, and areas 4 and 5 are non-design areas. The desi...

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 space grid-based design method of a three-dimensional lattice structure. The method comprises: 1, importing an initial three-dimensional entity model of the structure; 2, decomposing the structure, and selecting a design area; 3, selecting function surfaces, and deleting design area entities and non-function surfaces; 4, determining cell configurations and cell density ofall sub-region lattice structures; 5, generating lattice structure topology information in sub-regions; 6, constituting three-dimensional lattice structure information, and calculating the number of rod pieces; 7, inputting additive-manufacturing technology requirement parameters; 8, carrying out validity judgment on all the rod pieces; 9, calculating the number of invalid rod pieces; 10, calculating the ratio of the invalid rod member; 11, judging global validity; 12, constructing a lattice structure geometry model; and 13, carrying out merging operation on non-design areas, the function surfaces and the lattice structure to obtain a design model containing the lattice structure. According to the method, a design result well matches additive-manufacturing technology requirements and datainterfaces; and batch processing is employed, and higher skill and tedious work are avoided.

Description

Technical field: [0001] The invention relates to a three-dimensional lattice structure design method based on a space grid, and belongs to the technical field of mechanical structure design. Background technique: [0002] As a new type of structure in aviation, aerospace, automobile, medical and other fields, the truss-like lattice structure is widely used because of its light weight, high specific stiffness, high specific strength mechanical properties, shock absorption, energy absorption and other functional characteristics. Follow and apply. The three-dimensional lattice structure usually adopts the method of direct filling in the design area. This method has a small degree of design freedom and a low degree of designer participation. Designers cannot control the cell configuration, cell density, distribution form, and structural appearance of the lattice structure. , on the other hand, the direct filling method does not deal with the edge position of the design area eno...

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): G06F17/50
CPCG06F30/17G06F30/23
Inventor 邓昊宇王春洁曾福明李广耀刘家彤王刚
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