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Author: Chien-Chia Huang Publisher: ISBN: Category : Computer graphics Languages : en Pages : 243
Book Description
Abstract: Visualized construction information may provide more impressive and interactive effects to information users. For construction operation designers and operators, enhanced visualization information may promote their skill and knowledge level and in turn elevate the performance of each individual operation they designed or operated in a construction project. Construction operations can be real-timely simulated with fully visualized computer graphics to convey users even more direct and effective construction information. However, the path for constructing fully visualized, dynamic and three-dimensional simulations for construction operations is not straightforward. Construction operation simulation is a program of an abstracted system to represent the key characteristics and properties of the real construction operation system. Therefore, a construction operation simulation system should be capable of at least generating virtual simulation environment, performing operational calculations and handling uncertainties of the represented system. This research proposes a system structure of simulation frameworks that provide approaches for constructing construction operation simulations that are real-timely visualized and three dimensional. This framework concept enhances the ideas of software modularity and reusability for facilitating creating complex applications. The proposed structure of simulation frameworks is consisted of three parts: the visualization framework, the modeling framework and the control modules framework. These three simulations frameworks, as their names suggest, in the simulation system will perform visualizing, model calculating and controlling tasks respectively. Outputs of these tasks combined enable the simulation to appear like real, operate like real and react like real. In the visualization framework, general models and methodologies in computer graphics for real-timely rendering simulation scene and graphical user interface are included. This framework is indeed the rendering power house that will promptly perform calculations in objects transformations, viewing transformation, generating lighting and textures, displaying simulation data, and providing interactive operation functions. The second simulation framework, the modeling framework, contains libraries and functions needed for simulation operation calculations. In this research, a rigid body physics engine is implemented and included as the main component of this framework. This physics engine can dynamically compute three dimensional motions and movements of rigid bodies simulated in the scene; and in turn calculate the corresponding reactions between rigid bodies if collisions occur. The third simulation framework, the control module framework, holds libraries and functions that enable the simulation system to better handle uncertainties and vagueness in the real situations. Due to the framework modularity and reusability, purpose-specific simulation applications can be created easily. Simulation applications can be created based on the need of specific study objective by just generating objects or retrieving needed functions from the three established simulation frameworks. Demonstrations of application examples are included in this research. The convenience and power of utilizing simulation frameworks in creating simulation application is also satisfactorily proved.
Author: Chien-Chia Huang Publisher: ISBN: Category : Computer graphics Languages : en Pages : 243
Book Description
Abstract: Visualized construction information may provide more impressive and interactive effects to information users. For construction operation designers and operators, enhanced visualization information may promote their skill and knowledge level and in turn elevate the performance of each individual operation they designed or operated in a construction project. Construction operations can be real-timely simulated with fully visualized computer graphics to convey users even more direct and effective construction information. However, the path for constructing fully visualized, dynamic and three-dimensional simulations for construction operations is not straightforward. Construction operation simulation is a program of an abstracted system to represent the key characteristics and properties of the real construction operation system. Therefore, a construction operation simulation system should be capable of at least generating virtual simulation environment, performing operational calculations and handling uncertainties of the represented system. This research proposes a system structure of simulation frameworks that provide approaches for constructing construction operation simulations that are real-timely visualized and three dimensional. This framework concept enhances the ideas of software modularity and reusability for facilitating creating complex applications. The proposed structure of simulation frameworks is consisted of three parts: the visualization framework, the modeling framework and the control modules framework. These three simulations frameworks, as their names suggest, in the simulation system will perform visualizing, model calculating and controlling tasks respectively. Outputs of these tasks combined enable the simulation to appear like real, operate like real and react like real. In the visualization framework, general models and methodologies in computer graphics for real-timely rendering simulation scene and graphical user interface are included. This framework is indeed the rendering power house that will promptly perform calculations in objects transformations, viewing transformation, generating lighting and textures, displaying simulation data, and providing interactive operation functions. The second simulation framework, the modeling framework, contains libraries and functions needed for simulation operation calculations. In this research, a rigid body physics engine is implemented and included as the main component of this framework. This physics engine can dynamically compute three dimensional motions and movements of rigid bodies simulated in the scene; and in turn calculate the corresponding reactions between rigid bodies if collisions occur. The third simulation framework, the control module framework, holds libraries and functions that enable the simulation system to better handle uncertainties and vagueness in the real situations. Due to the framework modularity and reusability, purpose-specific simulation applications can be created easily. Simulation applications can be created based on the need of specific study objective by just generating objects or retrieving needed functions from the three established simulation frameworks. Demonstrations of application examples are included in this research. The convenience and power of utilizing simulation frameworks in creating simulation application is also satisfactorily proved.
Author: Reza Akhavian Publisher: ISBN: Category : Languages : en Pages : 105
Book Description
Automated data collection, simulation and visualization can substantially enhance the process of designing, analysis, planning, and control of many engineering processes. In particular, managing processes that are dynamic in nature can significantly benefit from such techniques. Construction projects are good examples of such processes where a variety of equipment and resources constantly interact inside an evolving environment. Management of such settings requires a platform capable of providing decision-makers with updated information about the status of project entities and assisting site personnel making critical decisions under uncertainty. To this end, the current practice of using historical data or expert judgments as static inputs to create empirical formulations, bar chart schedules, and simulation networks to study project activities, resource operations, and the environment under which a project is taking place does not seem to offer reliable results. The presented research investigates the requirements and applicability of a data-driven modeling framework capable of collecting and analyzing real time field data from construction equipment. In the developed data collection scheme, a stream of real time data is continuously transferred to a data analysis module to calculate the input parameters required to create dynamic 3D visualizations of ongoing engineering activities, and update the contents of a discrete event simulation (DES) model representing the real engineering process. The generated data-driven simulation model is an effective tool for projecting future progress based on existing performance. Ultimately, the developed framework can be used by project decision-makers for short-term project planning and control since the resulting simulation and visualization are completely based on the latest status of project entities.
Author: Xiong Liang Publisher: ISBN: Category : Construction industry Languages : en Pages : 364
Book Description
Considering the dynamic nature of construction industry, where new construction methods and equipment are being continuously adopted, coding the proposed methodologies in the computer system in an "ad hoc" manner entails substantial efforts for programming and system development, thus making application of the proposed methodology prohibitively expensive and practically infeasible. A graphic network modeling technique which is used in mechanical simulation systems is adapted to model the real-time 3D positioning and visualization applications. To summarize, this research has contributed three aspects of new knowledge in the field of construction industry. First, instead of using expensive devices, the 3D position of solid objects can be analytically fixed by tracking the least amount of control points. Second, the 3D position of articulated construction equipment can be analytically fixed by analyzing point coordinates and joint movement parameters. Last, the possibility of applying the developed methodologies in real-time 3D visualization of microtunneling operations has been evaluated. The kinematic chain of the tunnel boring machine (TBM) is modeled without the need of programming. The positioning of TBM cutter head which is not visible in most TBM guidance systems can be visualized in computer 3D graphics. Thus, a TBM operator in a remote control station can make more informed decisions as regards how to steer the TBM drilling in the complicated underground space along the as-designed tunnel alignment. The method for positioning and visualization of single solid object has been successfully validated by numerical analysis and laboratory experiments. The analytical method for positioning and visualization of articulated system has been validated by simulating a backhoe excavator in a computer environment, where the location of the backhoe' tracks is computed by using the "points to matrix" algorithm, and the positioning states of the cabin, boom, stick and bucket are deduced by using the DH technique.
Author: Susmita Bandyopadhyay Publisher: CRC Press ISBN: 1466596392 Category : Mathematics Languages : en Pages : 380
Book Description
When it comes to discovering glitches inherent in complex systems—be it a railway or banking, chemical production, medical, manufacturing, or inventory control system—developing a simulation of a system can identify problems with less time, effort, and disruption than it would take to employ the original. Advantageous to both academic and industrial practitioners, Discrete and Continuous Simulation: Theory and Practice offers a detailed view of simulation that is useful in several fields of study. This text concentrates on the simulation of complex systems, covering the basics in detail and exploring the diverse aspects, including continuous event simulation and optimization with simulation. It explores the connections between discrete and continuous simulation, and applies a specific focus to simulation in the supply chain and manufacturing field. It discusses the Monte Carlo simulation, which is the basic and traditional form of simulation. It addresses future trends and technologies for simulation, with particular emphasis given to .NET technologies and cloud computing, and proposes various simulation optimization algorithms from existing literature. Includes chapters on input modeling and hybrid simulation Introduces general probability theory Contains a chapter on Microsoft® ExcelTM and MATLAB®/Simulink® Discusses various probability distributions required for simulation Describes essential random number generators Discrete and Continuous Simulation: Theory and Practice defines the simulation of complex systems. This text benefits academic researchers in industrial/manufacturing/systems engineering, computer sciences, operations research, and researchers in transportation, operations management, healthcare systems, and human–machine systems.
Author: Yuhua Luo Publisher: Springer ISBN: 331924132X Category : Computers Languages : en Pages : 291
Book Description
This book constitutes the refereed proceedings of the 12th International Conference on Cooperative Design, Visualization, and Engineering, CDVE 2015, held in Mallorca, Spain, in September 2015. The 30 full papers presented together with 4 short papers were carefully reviewed and selected from numerous submissions. There is a group of papers dressing the big data related to the cooperative work. It includes the information modeling, intensive task management, how to use the cloud technology to foster the cooperation etc. To deal with the social network issues is the topic of another group of papers in this volume. They range from creating programming languages to automate cooperative processes, social network information visualization, and the ranking cooperative research teams by analyzing the social network data.
Author: Lu, Weisheng Publisher: Edward Elgar Publishing ISBN: 1839105526 Category : Technology & Engineering Languages : en Pages : 768
Book Description
Offering critical insights to the state-of-the-art in Building Information Modeling (BIM) research and development, this book outlines the prospects and challenges for the field in this era of digital revolution. Analysing the contributions of BIM across the construction industry, it provides a comprehensive survey of global BIM practices.
Author: Homam Al-Bahnassi Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Real-time planning the motion of heavy equipment (e.g. cranes) is an important issue in construction projects, where rapid and accurate planning directly affects the safety and productivity of operation. The work presented in this thesis is directed towards automatically generating an accurate motion plan in space and time for cranes by: (1) Investigating and utilizing motion planning algorithms to generate feasible paths with respect to all considered constraints; (2) Extending the efficiency of motion planning under complex global constraints (Le. geometrical constraints) that represent static and dynamic obstacles found in the construction site; and (3) Considering local constraints that are related to the stability of the crane itself. Local constraints include engineering constraints (e.g. workloads for cranes) in addition to kinematic and dynamic constraints for the crane joints. The methodology presented in this thesis was applied to develop a specialized motion planning system for construction equipment called Intelligent Construction Equipment motion Planner (ICE-Planner). This system was integrated into the 3D software to define, solve and visualize motion planning in real time. The proposed methodology provides: (1) A motion planning framework for supporting cranes with the ability of generalizing over different types of equipment; (2) practical equipment planning which is aware of local constraints derived from engineering and kinematics properties of the equipment itself; (3) more accurate and realistic motion planning with efficiency in re-planning dynamic cases found in actual sites; and (4) the ability of visualizing and simulating motion planning results in real-time.
Author: Chien-Chia Huang
Author: Chien-Chia Huang
Author: Reza Akhavian
Author: Xiong Liang
Author: Susmita Bandyopadhyay
Author: Yuhua Luo
Author: Amr Abdalla Oloufa
Author: Yi Wang
Author: Amr A. ElNimr
Author: Lu, Weisheng
Author: Homam Al-Bahnassi