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

Modeling method for impact of hail on aircraft composite laminated plate based on near-field dynamics

A composite material layer and composite material technology, applied in the field of peridynamics and impact problems, can solve problems such as the inability to accurately simulate large-scale deformation of hail

Active Publication Date: 2021-08-24
NORTHWESTERN POLYTECHNICAL UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this kind of impact problem, the traditional finite element method cannot accurately simulate the large-scale deformation during the hail impact process, and cannot derive the displacement at the discontinuity, but the peridynamics method can solve this problem well

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
  • Modeling method for impact of hail on aircraft composite laminated plate based on near-field dynamics
  • Modeling method for impact of hail on aircraft composite laminated plate based on near-field dynamics
  • Modeling method for impact of hail on aircraft composite laminated plate based on near-field dynamics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] 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 may be combined with each other as long as they do not conflict with each other.

[0070] Step 1: Establish a hail peridynamics simulation model, the diameter D of the hail is 15mm, and the density of the hail is 846kg m -3 ;

[0071] Establish a laminated board peridynamics simulation model. The length of the laminated board is L=101mm, the width W=101mm, the thickness is C=8mm, and the thickness of a single layer is T=1mm. There are 8 layers in total. The material parameters of the lami...

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 a modeling method for impact of hail on an aircraft composite laminated plate based on near-field dynamics, and belongs to the field of near-field dynamics and impact problems. On the basis of the near-field dynamics theory, a fiber bond, a matrix bond, an interlayer normal bond and an interlayer shear bond are introduced to simulate damage in the impact process; based on a bi-material interface model, a key constant expression capable of describing impact effects of different materials is established. Besides, a near-field kinetic model is established, the damage evolution law and the dynamic mechanical property of the composite laminated plate are considered by using a numerical analysis method, so that the damage mechanism and the influence factors when the composite laminated plate structure is stressed under the high-speed impact of hail are disclosed.

Description

technical field [0001] The invention belongs to the field of peridynamics and impact problems, and in particular relates to a research on the damage behavior of hail impact aircraft composite laminated plate structure based on the peridynamic bond-base theory. Background technique [0002] Compared with single materials, composite materials have higher specific stiffness and specific modulus, and have significant advantages in strength, stiffness, fatigue resistance and designability, and are widely used in engineering structures, especially in the aerospace field. During the service phase, composite material structures on aircraft, such as wing leading edges and radomes, may usually be damaged by the high-speed impact of hail. In order to ensure and improve the design and safety of aircraft composite laminate structures, it is particularly important to study the dynamic damage behavior of aircraft composite structures under the impact of hail. For this kind of impact probl...

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): G06F30/15G06F30/20G06F113/26G06F119/14
CPCG06F30/15G06F30/20G06F2113/26G06F2119/14Y02T90/00
Inventor 张峰韩诚侯欣婷王新河武明英王冬月张旭徐夏雨
Owner NORTHWESTERN POLYTECHNICAL 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