scholarly journals Aircraft digital assembly process design technology based on 3D Model

2018 ◽  
Vol 202 ◽  
pp. 02004 ◽  
Author(s):  
Zhen Chen ◽  
Jianjun Tang
Keyword(s):  
Process Design ◽  
3D Model ◽  
Simulation Optimization ◽  
Three Dimensional ◽  
System Structure ◽  
Assembly Process ◽  
Working Process ◽  
Product Model ◽  
Aircraft Assembly ◽  
Application Mode

In order to improve the quality, efficiency and cooperativity of aircraft assembly, based on the analysis of the characteristics of aircraft assembly process, a method for assembly process design, simulation and application based on three dimensional (3D) product model was proposed. The basic working process and system structure of the method were introduced, and the 3D digital assembly process planning, design and simulation optimization application mode was explored. This method has been applied in the design of aircraft assembly process, the efficiency and synergy of process design have been greatly improved.

Research on Aircraft Assembly Sequence Planning Technology Based on Key Characteristics

2013 ◽  
Vol 328 ◽  
pp. 9-16 ◽  
Author(s):  
Zhan Lei Sun ◽  
Peng Fei Han ◽  
Gang Zhao
Keyword(s):  
Process Design ◽  
Assembly Sequence Planning ◽  
Assembly Process ◽  
Assembly Sequence ◽  
Assembly Quality ◽  
Constraint Matrix ◽  
Aircraft Assembly ◽  
Sequence Planning ◽  
Key Characteristics ◽  
Assembly Sequences

Assembly Sequence Planning (ASP) is an essential question for aircraft assembly process design. Modern aircraft assembly contains plenty of complex shape components, which have so many assembly features to ensure, this leads to a large number of feasible assembly sequences using traditional sequence planning algorithms; and it is hard to evaluate the contribution to assembly quality for every sequence. A methodology called Key Characteristics Based ASP is proposed in this paper, which can significantly reduce unavailable sequences and ensure key features for quality in assembly process designing compared with previous methods. The methodology focuses on the final assembly quality and considers it as Assembly Key Characteristics (AKCs) in the beginning of assembly process design. With tools such as AKCs decomposition, Datum Flow Chain, precedence constraint matrix, the methodology describes the main process for ASP. To verify the technologys effectiveness, this paper presents an application of the algorithm in an aircraft component assembly by an 863 program.

Based on Flexible Automation Fixture of Siding Components of Assembly Craft Planning and Simulation

2012 ◽  
Vol 224 ◽  
pp. 109-112 ◽  
Author(s):  
Da Wei Wu ◽  
Jun Chao Yuan
Keyword(s):  
Process Design ◽  
Critical Role ◽  
Process Research ◽  
Assembly Process ◽  
Automatic Assembly ◽  
It Use ◽  
Aircraft Assembly ◽  
Flexible Automation ◽  
Assembly Unit

The research of assembly process design based on flexible automatic assembly process plays a critical role in improving the efficiency of aircraft assembly. it use the characteristics of flexible fixture reconfignrability to simplify assembly unit partition and make a kind of craft ideas apply to different assembly unit. Through wing assembly process research that obtains flexible automatic assembly assembly process can be versatile.

The Application of Three-Dimensional Digital Technology in Aircraft Assembly Process Design System

2013 ◽  
Vol 365-366 ◽  
pp. 565-568 ◽  
Author(s):  
Hong Jun Liu ◽  
You Ding ◽  
Qing Ming Fan
Keyword(s):  
Process Design ◽  
System Integration ◽  
Design Thinking ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Design System ◽  
Assembly Process ◽  
Reconstruction Process ◽  
Manufacturing Enterprises ◽  
3D Assembly

3D digital assembly process design technology is the combination of the three dimensions and information with the new software technology in traditional process design. This article is based on an aviation manufacturing enterprises priority to the realization of the whole assembly process design, simulation and verification business process, which mainly with Dassault Companys DELMIA and 3DVIA Composer platform. In this paper, some process design thinking and methods are introduced to the aircraft product process about the separation technology division, BOM reconstruction, process simulation, 3d assembly instruction compiling, and the like. It also introduces some application methods of system integration.

A Study on Static Features of a High-Speed Solenoid Valve Used in Diesel Engine

2012 ◽  
Vol 189 ◽  
pp. 393-397
Author(s):  
Na Chen ◽  
Yan Song Wang ◽  
Hui Guo ◽  
Jie Lei ◽  
Tao Zhang
Keyword(s):  
High Speed ◽  
3D Model ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Theoretical Method ◽  
Solenoid Valve ◽  
Analysis Method ◽  
Working Process ◽  
Electrical Unit ◽  
Ansys Workbench

Based on the Maxwell equation and simulation analysis method, this paper investigates and retains the optimized parameters of a high-speed solenoid valve, which is very important for electrical unit pump (EUP) diesels. According to the electromagnetic theory, firstly, a three-dimensional (3D) model of the solenoid valve is established, and working process of the electromagnets is analyzed by using both the theoretical method and Ansys Workbench software. In view of the electromagnetic force, furthermore, several parameters related to the solenoid valve performance are considered and their effects on solenoid valve are analyzed and discussed. Finally, the optimized parameters are proposed for the analyzed solenoid valve and proved by theoretical equations. The studied approach can be extended to any other field related to the electromagnetic device design.

An Assembly Simulation Optimization Method Based on View Transformation

2013 ◽  
Vol 658 ◽  
pp. 455-459
Author(s):  
Jian Jun Tang ◽  
Xi Tian Tian ◽  
Jun Hao Geng ◽  
Ming Xing Bai ◽  
Xiang Wei Liu
Keyword(s):  
Coordinate System ◽  
Process Simulation ◽  
Simulation Optimization ◽  
Optimization Method ◽  
Assembly Process ◽  
System Transformation ◽  
Aircraft Assembly ◽  
Assembly Simulation ◽  
The One ◽  
View Transformation

In order to improve showing effect of the aircraft assembly simulation, a new assembly process simulation optimization method was proposed with combining evaluation of viewpoints with view transformation. First, viewpoints evaluation principle was put forward according to assembly simulation features; then a new view coordinate system was calculated based on the view coordinate system transformation matrix by integrating the direction of assembly paths with the viewpoints evaluation principle; finally, entire optimized process of assembly simulation was analyzed. Efficiency of this method was verified by comparing the result of the optimized wing box assembly simulation with the one which had not been optimized.

scholarly journals Direct 3D model extraction method for color volume images

2021 ◽  
Vol 29 ◽  
pp. 133-140
Author(s):  
Bin Liu ◽  
Shujun Liu ◽  
Guanning Shang ◽  
Yanjie Chen ◽  
Qifeng Wang ◽  
...  
Keyword(s):  
3D Model ◽  
Clinical Medicine ◽  
Three Dimensional ◽  
Laplacian Matrix ◽  
Segmentation Method ◽  
Human Organs ◽  
Model Segmentation ◽  
Treatment Objective ◽  
Organ Models ◽  
Different Parts

BACKGROUND: There is a great demand for the extraction of organ models from three-dimensional (3D) medical images in clinical medicine diagnosis and treatment. OBJECTIVE: We aimed to aid doctors in seeing the real shape of human organs more clearly and vividly. METHODS: The method uses the minimum eigenvectors of Laplacian matrix to automatically calculate a group of basic matting components that can properly define the volume image. These matting components can then be used to build foreground images with the help of a few user marks. RESULTS: We propose a direct 3D model segmentation method for volume images. This is a process of extracting foreground objects from volume images and estimating the opacity of the voxels covered by the objects. CONCLUSIONS: The results of segmentation experiments on different parts of human body prove the applicability of this method.

Aircraft Assembly Ramp-Up Planning Using a Hybrid Simulation-Optimization Approach

2020 ◽  
Author(s):  
Amos H.C. Ng ◽  
Jacob Bernedixen ◽  
Martin Andersson ◽  
Sunith Bandaru ◽  
Thomas Lezama
Keyword(s):  
Simulation Optimization ◽  
Hybrid Simulation ◽  
Optimization Approach ◽  
Aircraft Assembly

scholarly journals On Sequential-Pattern-Based Intelligent Compilation of Aircraft Assembly Process

2021 ◽  
Vol 1820 (1) ◽  
pp. 012106
Author(s):  
Sen-Shan Ouyang ◽  
Liang Song ◽  
Xiang-Feng Liu ◽  
Chen Chen ◽  
Zhen-Yu Chen
Keyword(s):  
Sequential Pattern ◽  
Assembly Process ◽  
Aircraft Assembly

Modeling of Thermoplastic Materials for the Process-Simulation of Press-Fit Interconnections on Moulded Interconnected Devices

2012 ◽  
Vol 134 (3) ◽  
Author(s):  
Thomas Fellner ◽  
Elena Zukowski ◽  
Jürgen Wilde ◽  
H. Kück ◽  
H. Richter ◽  
...  
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Base Material ◽  
Creep Model ◽  
Assembly Process ◽  
Temperature Dependent ◽  
Reliability Modeling ◽  
Finite Element Software ◽  
Press Fit ◽  
Temperature Loads

This investigation is aimed at the modeling of both the fabrication process and the reliability of press-fit interconnections on moulded interconnect devices (MID). These are multifunctional three-dimensional substrates, produced by thermoplastic injection moulding for large-series applications. The assembly process and subsequently the durability of press-fit interconnections has been modeled and proved with a finite element software. Especially, a simulation tool for process optimizations was created and applied. In order to obtain realistic results, a creep model for the investigated base material, a liquid-crystal polymer (LCP), was generated and verified by experiments. Required friction coefficients between metal pin and base material were determined by adapting simulations and experiments. Retention forces of pins pressed into substrate holes during as well after the assembly process, and after temperature loads were predicted by simulations. Additionally, the decreasing extraction forces over time due to creep in the thermoplastic base material have been predicted for different storage temperatures as well with finite element analyses. Following, the numerical results of the process and reliability modeling were verified by experiments. It is concluded that the behavior of the mechanical contact of the pin-substrate system, can be suitably described time- and temperature-dependent.

An Assembly Process Model Involved Resource for Complex Products

2012 ◽  
Vol 268-270 ◽  
pp. 845-850
Author(s):  
Gang Sun ◽  
Yuan Li ◽  
Jian Feng Yu ◽  
Jie Zhang ◽  
Liang Dong
Keyword(s):  
Graph Theory ◽  
Process Planning ◽  
Process Model ◽  
Modeling Method ◽  
Assembly Process ◽  
Product Model ◽  
Typical Structure ◽  
Complex Products ◽  
3D Environment ◽  
Interactive Relationship

Fixtures, tools, and other assembly resources have an important role in the assembly of complex products, so it is very necessary to consider the interactive relationship between the resources model and the product model for assembly order planning in 3D environment. Firstly, the features of assembly process planning involved resources are analyzed. Secondly, the concept of the assembly process intention（AsmPI） is introduced，and an assembly process can be divided into an AsmPI sequence. Thirdly, based on the graph theory, a resource-involved assembly process model is built up. At last, setting a typical structure as an example, the validity of this modeling method is verified.

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