Ship whole elastic-plastic movement response predication method and system under action of underwater explosion

A technology of motion response and underwater explosion, applied in special data processing applications, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2015-05-27
NAVAL UNIV OF ENG PLA
View PDF3 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a lack of a set of theoretical calculation methods in China that fully consider the joint act...

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
  • Ship whole elastic-plastic movement response predication method and system under action of underwater explosion
  • Ship whole elastic-plastic movement response predication method and system under action of underwater explosion
  • Ship whole elastic-plastic movement response predication method and system under action of underwater explosion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] 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.

[0048] The invention provides a method for predicting the overall elastoplastic motion response of a ship under the action of an underwater explosion, such as figure 1 As shown, the method first equates the ship motion to the free hull girder motion, comprehensively considers the impact of shock waves and air bubbles on the ship, divides the free hull girder load pressure under the action of und...

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 discloses a ship whole elastic-plastic movement response predication method and system under the action of underwater explosion. The method comprises the following steps: S1, simplifying a ship into a free ship body beam with an equal section; S2, dividing load pressure of the free ship body beam into five time phases under the action of the underwater explosion; S3, solving movement displacement of the free ship body beam in the five time phases under the action of the underwater explosion; S4, solving a bending moment of the ship body beam; S5, solving forward plastic movement parameters of the ship body beam; S6, solving backward elastic unloading movement parameters of the ship body beam; S7, solving backward plastic movement parameters of the ship body beam; S8, solving forward plastic movement parameters of the ship body beam. The invention further provides a system for realizing the method. According to the method and the system disclosed by the invention, the ship plastic movement process is analyzed on the basis of comprehensively considering the impact effect on the whole ship body by impact waves and air bubble loads, and engineering predication of ship whole elastic-plastic movement deformation under the action of the underwater explosion can be accurately and conveniently realized.

Description

technical field [0001] The invention belongs to the technical field of anti-underwater explosion impact deformation of the overall structure of a ship, and more specifically relates to a method and system for predicting the overall elastic-plastic motion response of a ship under the action of an underwater explosion. Background technique [0002] In modern naval warfare, the underwater explosive attacks suffered by ships are mostly close-range effects. The impact of underwater short-range non-contact explosions pervades the entire ship, often causing large-scale equipment damage or even breaking the ship as a whole. On March 26, 2010, the Korean "Cheonan" frigate was instantly broken and sank when it was attacked by an underwater explosion, which can be regarded as a typical example of the breaking and damage of a ship caused by an underwater near-distance non-contact explosion. [0003] For a ship under the action of an underwater near-distance non-contact explosion, it is ...

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): G06F19/00
Inventor 李海涛朱石坚何其伟牟金磊楼京俊王晓强刘锦春
Owner NAVAL UNIV OF ENG PLA
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