Unlock instant, AI-driven research and patent intelligence for your innovation.

Shell structural part deformation prediction method, device and equipment and storage medium

A prediction method and technology for structural parts, applied in design optimization/simulation, instrumentation, calculation, etc., can solve the problems of high dependence on experimental results and unsatisfactory result accuracy, and achieve the effect of reducing accuracy loss

Active Publication Date: 2020-01-14
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the key technologies for welding deformation simulation calculations of large and complex structures using shell elements are mostly based on the inherent strain method, which is simple in form and highly dependent on experimental results, and the accuracy of the calculated results often cannot meet the growing critical Demand for Advanced Welding Manufacturing of Components

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
  • Shell structural part deformation prediction method, device and equipment and storage medium
  • Shell structural part deformation prediction method, device and equipment and storage medium
  • Shell structural part deformation prediction method, device and equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] see Figure 1 to Figure 5 , the first embodiment of the present invention provides a method for predicting the deformation of a shell structure, which can be performed by a deformation prediction device for a shell structure (hereinafter referred to as the prediction device). In particular, one or executed by a plurality of processors, and at least include the following steps:

[0072] S101. Obtain the finite element model of the welded joint of the shell structure and the finite element model of the shell structure.

[0073] In this embodiment, the prediction equipment first obtains the pre-established three-dimensional geometric model of the shell structure; according to the three-dimensional geometric model of the shell structure, obtains the welded joint geometric model of the shell structure, and then performs a geometric analysis of the welded joint The finite element model of the welded joint is generated after the model is divided into meshes, and the finite el...

no. 2 example

[0089] see Image 6 , an embodiment of the present invention also provides a deformation prediction device for a shell structure, including:

[0090] A finite element model acquisition unit 100, configured to acquire a welded joint finite element model of the shell structure and a finite element model of the shell structure;

[0091] An analysis unit 200, configured to perform thermoelastoplastic finite element analysis on the finite element model of the welded joint to obtain welding residual plastic strain information;

[0092] A plastic strain load and moment acquisition unit 300, configured to obtain the plastic strain load and moment according to the welding residual plastic strain information;

[0093] The mapping unit 400 is configured to map the plastic strain load and moments of the local welded joint finite element model to the global shell structure finite element model based on the principle of energy conservation, so as to predict the deformation of the shell str...

no. 3 example

[0114] The third embodiment of the present invention provides a deformation prediction device for a shell structure, including a processor, a memory, and a computer program stored in the memory, the computer program can be executed by the processor to achieve the above-mentioned The deformation prediction method of the shell structure.

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 deformation prediction method, device and equipment for a shell structural part and a computer storage medium. The method comprises the steps that a welding joint finite element model and a shell structural part finite element model of the shell structural part are acquired; performing thermoelastic-plastic finite element analysis on the welded joint finite element modelto obtain welding residual plastic strain information; according to the welding residual plastic strain information, obtaining a plastic strain load and a torque; and based on an energy conservation principle, mapping the plastic strain load and the moment of the local welding joint finite element model into a global shell structural part finite element model so as to predict the deformation condition of the shell structural part. According to the method, deformation of the large complex shell structural part is accurately predicted, and design and optimization references are provided for welding of the shell structural part in practice.

Description

technical field [0001] The invention relates to the application field of welding numerical simulation, in particular to a deformation prediction method, device, equipment and storage medium of shell structural parts. Background technique [0002] Shells are widely used in engineering practice, especially in the field of welding. For example, various containers in industries such as aerospace, marine, and machinery manufacturing are typical shell structures made by welding processes. Among them, the welding deformation control of this type of structure is a major key issue in the manufacturing process, and the use of shell elements for simulation calculations can simplify the three-dimensional space problem into a two-dimensional problem, which greatly shortens the time for finite element modeling and simulation calculation. time. However, at present, the key technologies for welding deformation simulation calculations of large and complex structures using shell elements are...

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): G06F30/23G06T17/20
CPCG06T17/20
Inventor 庞盛永王靖升梁吕捷李一凡黄安国
Owner HUAZHONG UNIV OF SCI & TECH