Automatic Assembly and Key Technologies of Expansion Joints

2011 ◽  
Vol 109 ◽  
pp. 420-423
Author(s):  
Yan Kai Fang
Keyword(s):  
Parametric Modeling ◽  
Modeling Method ◽  
Cycle Life ◽  
Secondary Development ◽  
Automatic Assembly ◽  
Expansion Joint ◽  
Expansion Joints ◽  
Key Technologies ◽  
Graphics Software

Expansion joints are non-standard devices whose shape and parameters could vary with temperature, pressure, displacement and cycle life, so it's drawing work is very burdensome. Expansion joint industry is badly in need a set of accurate, reliable and stong practical professional graphics software. Therefore this paper carried out targeted secondary development of the software on the basis of digestion and absorption of SolidWorks2010 so as to meet the urgent needs of expansion joints industry. The structure of most parts of bellows expansion joints is not complex, and their geometry are relatively simple and fixed, so it is very suitable for parametric modeling method.

Development of Graphics Software of Bellows Expansion Joint

2011 ◽  
Vol 101-102 ◽  
pp. 3-6 ◽  
Author(s):  
Yan Kai Fang
Keyword(s):  
Parametric Modeling ◽  
Modeling Method ◽  
Cycle Life ◽  
Secondary Development ◽  
Expansion Joint ◽  
Expansion Joints ◽  
Graphics Software

Expansion joints are non-standard devices which shape and parameters could vary with temperature, pressure, displacement and cycle life. The drawing work of expansion joints is rather important. A set of accurate, reliable and strong practical professional graphics software is needed for expansion joint industry. On the basis of digestion and absorption of SolidWorks 2010, secondary development of the software was carried out in this paper so as to meet the urgent needs of expansion joints industry. The structures of most bellows expansion joints are not complex, and their geometries are relatively simple and fixed. It is very suitable for bellows expansion joints solved with parametric modeling method.

The Parametric Modeling of Hydraulic Turbine Based on Pro/E Secondary Development

2014 ◽  
Vol 577 ◽  
pp. 258-262
Author(s):  
Meng Sha Zhang ◽  
Zhong Ping Hua ◽  
Chen Shen ◽  
Zhou Zhang
Keyword(s):  
Hydraulic Turbine ◽  
Parametric Modeling ◽  
Secondary Development ◽  
Design System ◽  
Systematic Analysis ◽  
Synchronous Mode ◽  
Key Technologies ◽  
Development Processes ◽  
Design Idea ◽  
Menu Design

In this paper, combining with PRO/E4.0 software, getting the general design idea of the hydraulic turbine, and aiming at systematic analysis and research the key technologies of development design system process of hydraulic turbine. The key technologies include the pro/toolkit interface technology, menu design MFC dialog box as well as the establishment and access of database. Based on the two modes’ characteristics of PRO/TOOLKIT application, determining to use the DLL mode of the synchronous mode for the system design model's mode; Combining with the structure of the main parts of the hydraulic turbine, aiming at the characteristics of the pro/toolkit interface technology, menu design and MFC dialog box ,concluded the development processes of the pro/toolkit interface technology, menu design and MFC dialog box; Combining with the PRO/TOOLKIT interface technology and the characteristics of technology of MFC dialog box, selected the required software which is used to create and access database, and the specific development process. This provides important technical Supports for design system of Hydraulic turbine's development.

Parametric Modeling for Globoidal Cam Based on CATIA/CAA

2011 ◽  
Vol 88-89 ◽  
pp. 236-239 ◽  
Author(s):  
Guang Guo Zhang ◽  
Zhi Bin Chang ◽  
Hai Tao Liu
Keyword(s):  
Design Process ◽  
Parametric Modeling ◽  
Modeling Method ◽  
Feature Model ◽  
Curved Surface ◽  
Secondary Development ◽  
Working Surface ◽  
Parameterized Modeling

The design and machining of globoidal cam is difficult,because the shape of working surface is complex,and the curved surface of its space is undevelopable. Based on the above reasons,we proposed the parametric Modeling method for globoidal cam based on CATIA/CAA. Through the secondary development of CATIA,we realized the parameterized modeling of globoidal cam using the modelling mothods based on the feature model,it made the design process simplified,improved the efficiency of design,provided a new solution for the design of globoidal cam.

Experimental Study on Mix Ratio Design and Road Performance of Medium and Small Deformation Seamless Expansion Joints of Bridges

2021 ◽  
pp. 036119812098474
Author(s):  
Pengzhen Lu ◽  
Chenhao Zhou ◽  
Simin Huang ◽  
Yang Shen ◽  
Yilong Pan
Keyword(s):  
Traffic Safety ◽  
Performance Test ◽  
Asphalt Mixture ◽  
Small Deformation ◽  
Expansion Joint ◽  
Expansion Joints ◽  
Mixture Ratio ◽  
The Road ◽  
Marshall Test ◽  
Road Performance

Expansion joints are a weak and fragile part of bridge superstructure. The damage or failure of the expansion joint will lead to the decline of bridge durability and endanger the bridge structure and traffic safety. To improve the service life and performance of bridge expansion joints, the ideal method is to use seamless expansion joints. In this study, starting from the commonly used asphalt mixture gradation of seamless expansion joint, and taking into account the actual situation of bridge expansion joint structure and environment in China, the gradation and asphalt-aggregate ratio are preliminarily designed. Through a Marshall test, the corresponding asphalt mixture is evaluated and analyzed according to the stability, flow value, and void ratio, and the optimal gradation and asphalt-aggregate ratio are determined. Finally, the asphalt mixture is prepared with the mixture ratio design, and the test results of an immersion Marshall test, fatigue performance test, and full-scale test verify that the asphalt mixture meets the road performance requirements of seamless expansion joints. On the basis of the experimental data, the performance of large sample asphalt mixture is continuously tested, compared, and optimized. The results show that the asphalt mixture ratio designed is true and reliable, which can provide reference for the optimal design of seamless expansion joint filler.

Study on Crankshaft Design Based on CAD/CAE

2011 ◽  
Vol 201-203 ◽  
pp. 830-835
Author(s):  
Chang Gao Xia ◽  
Jian Kuan Su ◽  
Mao Hui Pan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Parametric Modeling ◽  
Analysis Procedure ◽  
Secondary Development ◽  
Design Quality ◽  
Element Analysis ◽  
Integrated Method ◽  
Engine Crankshaft

This paper presents an integrated method, which is based on the CAD/CAE, for engine crankshaft design. A parametric modeling system of engine crankshaft is established with the CATIA secondary development tools. Taking advantage of the finite element analysis procedure of engine crankshaft strength which is programmed with ANSYS APDL programming language, the parametric loading, automatic solution and result analysis of the crankshaft strength can be realized. Integrating the parametric modeling system of engine crankshaft and the special finite element analysis procedure of the engine crankshaft strength, the three-dimensional digital model of the crankshaft can be generated rapidly. By changing the structure dimension, the crankshaft series design is achieved and the design and analysis can be improved. Therefore, it is helpful to improve the design quality and efficiency of crankshaft and shorten the design cycle.

The Study of CAD/CAE Integrated Technology in Network Environment

2010 ◽  
Vol 145 ◽  
pp. 567-572
Author(s):  
Hua Ding ◽  
Zhao Jian Yang ◽  
Xue Wen Wang ◽  
Zhi Yong Ding
Keyword(s):  
Parametric Design ◽  
Parametric Modeling ◽  
Component Technology ◽  
Secondary Development ◽  
Element Analysis ◽  
Development Tool ◽  
Database Technology ◽  
Remote Design ◽  
Parametric Finite Element Analysis ◽  
Analysis Platform

Based on the concept of parametric design, this paper realizes the parametric modeling and parametric finite element analysis by utilizing UG/OPEN secondary development tool and APDL module of ANSYS software respectively. This paper also achieves data sharing of CAD/CAE through compiling interface program between UG6.0 and ANSYS10.0. In addition, the remote design and analysis platform has been built by using ASP.NET technology, component technology, and database technology. We take piston-piston rod part of coal mining machine’s cutting unit as an example to verify the system. Meanwhile, it proves system can effectively shorten design and analysis cycle time, and reduce workload of designer. Therefore, this software has potential application value in engineering.

scholarly journals A Novel Parametric Modeling Method and Optimal Design for Savonius Wind Turbines

Energies ◽  
2017 ◽  
Vol 10 (3) ◽  
pp. 301 ◽  
Author(s):  
Baoshou Zhang ◽  
Baowei Song ◽  
Zhaoyong Mao ◽  
Wenlong Tian ◽  
Boyang Li ◽  
...  
Keyword(s):  
Optimal Design ◽  
Wind Turbines ◽  
Parametric Modeling ◽  
Modeling Method

Optimization of Aircraft Mid-Fuselage Structure Design Based on Parametric Modeling

2014 ◽  
Vol 933 ◽  
pp. 423-427 ◽  
Author(s):  
Chao Ying Zhang ◽  
Hu Liu ◽  
Yun Peng Ma
Keyword(s):  
Structural Response ◽  
Aircraft Design ◽  
Element Model ◽  
Parametric Model ◽  
Structure Design ◽  
Parametric Modeling ◽  
Secondary Development ◽  
Typical Structure ◽  
Development Technology ◽  
Cae Technology

In aircraft preliminary design, fuselage structure design is important, and to reach the lightest weight is the main target for aircraft design, especially for civil aircraft. Based on CAD/CAE technology, the paper selects a typical structure layout form of aircraft mid-fuselage to study the method of structure model quickly creation and optimization. First, it focuses on fuselage parameterized modeling method, based on CATIA secondary development technology, to create the mid-fuselage parametric model. Then, based on Patran command language, the CAD model achieves automatic meshing. Finally, selecting an appropriate strategy and using iSIGHT integrated with fuselage parametric model and finite element model, and referring to the calculated the structural response by Nastran to realize mid-fuselage structure optimization.

scholarly journals Influence of the Acoustic Cover of the Modular Expansion Joint on the Acoustic Climate in the Bridge Structure Surroundings

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2842
Author(s):  
Janusz Bohatkiewicz ◽  
Michał Jukowski ◽  
Maciej Hałucha ◽  
Marcin Dębiński
Keyword(s):  
Sound Level ◽  
Structural Elements ◽  
Expansion Joint ◽  
Expansion Joints ◽  
The Road ◽  
Sound Levels ◽  
Road Surfaces ◽  
Before And After ◽  
Bridge Structures

The noise generated at the interface between the wheels of vehicles and the road surface is well recognized in the literature worldwide. Many publications describe the phenomenon of reducing this kind of impact by silent road surfaces. A specific type of this noise is the sound generated by vehicles passing over the expansion joints of bridge structures. Due to the impulsive nature of this sound, it is very onerous for people living in the close vicinity of bridge structures. The passage of vehicles over expansion joints causes the formation of vibrations that are transmitted to the structural elements of bridge structures, which may cause the formation of the material sounds (especially arduous in the case of bridges with steel elements). An attempt to reduce this impact was made by making a prototype acoustic cover of the expansion joint on the selected bridge. The paper presents the results of research on the “in situ” acoustic effectiveness of this cover. Additionally, the noise was modelled in the object surroundings before and after the cover’s application. The acoustic efficiency of the cover in the whole measured frequency range was 5.3 dBA. In the narrower frequency bands (1/3 octave bands), larger sound level reductions were observed. The maximum sound levels measured under the tested dilatation were less than 10.0 dBA lower than the maximum sound levels measured under the reference dilatation.

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