Three-Dimensional Parametric Data Exchange for Curved Steel Bridges

2013 ◽  
Vol 2331 (1) ◽  
pp. 27-34 ◽  
Author(s):  
S. Gokhan Karaman ◽  
Stuart S. Chen ◽  
Benny J. Ratnagaran
Keyword(s):  
Data Exchange ◽  
Three Dimensional ◽  
Steel Bridges ◽  
Parametric Data ◽  
Curved Steel

Non-linear seismic dynamic response of curved steel bridges equipped with LRB supports

2010 ◽  
Vol 3 (1) ◽  
pp. 34-41 ◽  
Author(s):  
Carlos Mendez Galindo ◽  
Javier Gil Belda ◽  
Toshiro Hayashikawa
Keyword(s):  
Dynamic Response ◽  
Steel Bridges ◽  
Non Linear ◽  
Curved Steel

Intermeshing: A New Concept For Rapid Steel Erection

2019 ◽  
Author(s):  
Salam Al-Sabah ◽  
Debra Laefer ◽  
Linh Truong-Hong
Keyword(s):  
Structural Steel ◽  
Three Dimensional ◽  
Steel Bridges ◽  
Digital Manufacturing ◽  
Initial Analysis ◽  
Contact Points ◽  
Steel Connection ◽  
Welding Forces ◽  
And Robotics ◽  
Steel Cutting

<p>Three-dimensional intermeshing of steel enabled by advanced digital manufacturing holds the potential to radically change how steel bridges and buildings are connected. This paper presents the concept of the first universal structural steel connection in over 100 years. The proposed Intermeshed Steel Connection (ISC) exploits recent advances in steel cutting technologies and robotics to shape member ends precisely. This vastly reduces on-site bolting and welding. Forces are transferred through common bearing surfaces at multiple contact points. The new connection is designed to accelerate structural steel deployment and offer better disassembly options. This paper introduces the geometry, manufacturing, and initial analysis of the connection approach, which holds the potential to be robust, secure, scalable, and faster to erect.</p>

Systematic Derivation of a Standard Set of Declarative Constraints for Shape Definition in CAD

1999 ◽  
Author(s):  
Bernie Bettig ◽  
Jami Shah
Keyword(s):  
Computer Aided Design ◽  
Data Exchange ◽  
Mechanical Design ◽  
Constraint Solving ◽  
Mathematical Basis ◽  
Parametric Data ◽  
Geometrical Constraints ◽  
Standard Set ◽  
Aided Design ◽  
Systematic Derivation

Abstract This paper describes the derivation of a consistent and comprehensive set of geometrical constraints for shape definition in Computer-Aided Design. These are needed to enable compatibility in parametric data exchange and to promote both standard capabilities and predictable solutions from constraint solving software kernels. The paper look at the mathematical basis for constraints present in the literature and elaborates about all types of constraints that can be described by the same mathematical basis. The approach considers all combinations of distance and angle constraints, on one point or all points of curves and surfaces, as well as transformations and mappings that are required in mechanical design.

CFD Analysis of Engines: An Advanced Approach Based on Codes Dynamically Coupled

2003 ◽  
Author(s):  
Angelo De Vita ◽  
Luca Di Angelo ◽  
Luca Andreassi
Keyword(s):  
Data Exchange ◽  
Internal Combustion Engines ◽  
Gas Flow ◽  
Three Dimensional ◽  
Test Case ◽  
3D Effects ◽  
Flow Effects ◽  
Race Cars ◽  
Direct Feedback ◽  
Physical Phenomena

An advanced approach to evaluate the gas flow in internal combustion engines has been carried out. It is based on an interactive procedure which dynamically couples one-dimensional (1D) and three dimensional (3D) computational fluid dynamics codes. Direct feedback between the codes has been assured allowing 3D fluid flow effects to be fed back into the 1D system. A cycle-by-cycle convergence of results in the data exchange sections has been guaranteed. The capability of describing physical phenomena increases and some numerical problems, as the reflection of pressure waves on the 3D grid boundaries, can be avoided. The procedure has been applied to a simple test case and to a typical engine application where 3D effects are not negligible: flow field definition within an air box for race cars. The procedure has proven effective and could be easily adapted for further different applications.

scholarly journals THE PROPERTIES OF GEOMETRICALLY MODELLING COMPUTATIONAL SCHEMES FOR BUILDING STRUCTURES

2021 ◽  
Vol 12 (1) ◽  
pp. 32-38
Author(s):  
Vladimir Popov ◽  
Eduard Kriksunov ◽  
Tatjana Grigorjeva
Keyword(s):  
Computational Model ◽  
Data Exchange ◽  
Data Transfer ◽  
Three Dimensional ◽  
Integrated Design ◽  
Integrated Analysis ◽  
Building Structures ◽  
Structural Behaviour ◽  
Actual Structure ◽  
Developmental Features

For launching a project on a structural object, the calculation of building structures stands as one of the most important stages of project development. In order to correctly analyse structural behaviour, determine the stress-strain state and solve design or inspection problems, the designer is forced to adequately formalize the actual structure turning it into a faultless computational scheme. Virtual testing is one of the main features of the single graphical-information model. Interoperable systems for three-dimensional modelling and analysis, calculation and design ensure smooth data transfer between the physical and computational model. Modern object-modelling techniques and integrated analysis systems allow achieving the defined goal. The article deals with the forms of data exchange, the developmental features of the designed and computational (analysis) BIM model, the integrated design process of CAD/CAE as well as the conversion problems of the physical and computational model.

scholarly journals Highway Alignment Optimization: An Integrated BIM and GIS Approach

2019 ◽  
Vol 8 (4) ◽  
pp. 172 ◽  
Author(s):  
Linlin Zhao ◽  
Zhansheng Liu ◽  
Jasper Mbachu
Keyword(s):  
Data Exchange ◽  
Three Dimensional ◽  
Proper Function ◽  
Data Interoperability ◽  
Semantic Web Technologies ◽  
Integration Model ◽  
Semantic Level ◽  
Proposed Model ◽  
Highway Alignment ◽  
Highway Project

Highway infrastructure plays an important role in assuring the proper function of the nation’s transportation. Highway alignment is an essential part of the highway planning and design phase, which has significant effects on the surroundings. Identifying optimal highway routes while using traditional methods requires significant time, cost, and effort, since it requires a comprehensive assessment of multiple factors, such as cost and environmental impacts. This study proposes an approach for managing highway alignment in the context of a larger landscape that integrates building information modelling (BIM) and geographic information system (GIS) capabilities. To support this integration, semantic web technologies are used to integrate data on a semantic level. Moreover, the approach also uses genetic algorithms (GAs) for optimizing highway alignments. A fully automated model is developed that enables data interoperability between BIM and GIS systems and also allows for data exchange between the integration model and the optimization algorithm. The model enables the full exploitation of features of the project and its surroundings for highway alignment planning. The proposed model is also applied to a real highway project to validate its effectiveness. The visualization model of the highway project and its surroundings provides a realistic three-dimensional image that produces a comprehensive virtual environment, where the project could be effectively planned and designed. That can help to reduce design errors and miscommunication, which, in turn, reduces project risks. Moreover, geological and geographical analyses help to identify geohazards and environmentally sensitive regions. The proposed model facilitates highway alignment planning by providing a cross-disciplinary approach to close the gap between the infrastructural and geotechnical planning processes.

Three Dimensional Micro Detection Scheme of Fatigue Cracks in Steel Box Girder with HIROX Testing System

2014 ◽  
Vol 1049-1050 ◽  
pp. 281-284
Author(s):  
Jian Zhang ◽  
Tao Hong ◽  
Yan Yuan Gao ◽  
Jian Shu Ye ◽  
Jun Ai
Keyword(s):  
Fatigue Crack ◽  
Fatigue Cracks ◽  
Three Dimensional ◽  
Steel Bridges ◽  
Detection Technique ◽  
Testing System ◽  
Box Girder ◽  
Detection Scheme ◽  
Steel Box Girder ◽  
Testing Design

In practical steel box girder, the fatigue cracks are inevitably existed in steel bridges after they are burdened with the overloading vehicles and larger numbers of automobiles. How to efficiently detect the fatigue cracks, especially the initial fatigue cracks, become one of the most important question to be solved for the steel box girder. HIROX testing system is based on three dimensional micro detection technique, which was successfully used into the domains of aeronautics and astronautics. Three dimensional micro detection scheme of fatigue cracks in steel box girder with HIROX testing system is studied in this paper. Through the data from the testing design, the important characteristic width and length of the fatigue crack can be achieved, which can be used for the grasping of the mechanism of the steel box girder.

Development of Alignment-Based Parametric Data Exchange Schema for Bridge Geometry

2014 ◽  
Vol 2460 (1) ◽  
pp. 22-30 ◽  
Author(s):  
Hanjin Hu ◽  
Stuart S. Chen ◽  
Rohit Srikonda ◽  
Najaf Ali
Keyword(s):  
Data Exchange ◽  
Parametric Data
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