Patiño Castro, Mónica, Merchán, Luis, and Pardo, César
Revista Cubana de Ciencias Informáticas. September 2013 7(3):85-95
COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE, COMPUTER SCIENCE, SOFTWARE ENGINEERING, Simulación, casos de uso, prototipado, diseño ágil, Simulation, use case, prototyping, and agile design
Este artículo presenta el manejo de simulación de casos de uso, la creación de prototipos y generación de escenarios como parte inicial del ciclo de vida del desarrollo del software, aplicando el concepto de diseño ágil; es decir, cómo se puede llegar a una aproximación cercana de la dinámica del negocio proporcionando interacción temprana con el cliente, para continuar luego con las etapas formales del ciclo de vida. This paper presents the use of simulation use cases, prototyping and scenario generation as an initial part of the life cycle of software development, using then concept agile design; ie how to reach a close approximation of the dynamics of the business by providing early interaction whit the client, and continues with the client, and continues with the formal stages of the life cycle.
Balkan Region Conference on Engineering and Business Education, 2017, 3, 1, 189.
virtual prototyping, simulation, powertrain, and H2iL
The paper examines the problem of developing cost effective teaching and research tools for automotive dynamics. Different available solutions are presented and the need of human feedback is emphasized. Based on the demands from industry and academia (benchmarking, virtual prototyping, comparative testing of alternative technologies, development and tuning of the automotive control etc.) a solution is proposed. At the core of the proposed tool is a H2iL (humanand- hardware-in-the-loop) simulator based on an electric vehicle. An architecture is elaborated for the simulator and the proof of concept is done in three steps.
A realidade virtual é um ambiente gerado pelo computador em que o usuário tem disponibilidade de controles tridimensionais de maneira altamente interativa, podendo manipular e explorar dados em tempo real. A realidade virtual pode ser aplicada em diversos setores da indústria, desde o planejamento de fábricas, simulação da produção, auxílio na divulgação de produtos, treinamento de funcionários, validação de protótipos. Este artigo visa mostrar a flexibilidade da utilização da realidade virtual dentro das indústrias e dos centros de pesquisas, focando principalmente as áreas relacionadas a manufatura, desenvolvimento de produto e treinamento. Virtual reality is a computer-generated environment with highly interactive three-dimensional controls which allow the user to manipulate and examine data in real time. Virtual reality can be applied in a number of industry sectors, including factory planning, product simulation, product popularization, employee training and prototype validation. This article aims to show the flexibility of virtual reality in industry and in research centers, focussing mainly on areas related to manufacturing, product development and training.
A physics-based cloth modelling system has been proposed, targeted at the virtual prototyping of garments of real interest and production. The system should allow designers to validate their styling/design choices on a digital apparel model before (or in place of) any physical prototyping. Taking into account the design complexity of real tailored apparel, CAD apparel models can be defined incorporating information about tailoring/assembly features. A graphical interface allows a user to create his/her garment by interactively specifying design elements such as layers, seams, pockets, constraints, aesthetic and functional lines. A discrete Newtonian particle-based model is considered for physics-based cloth simulation, originally defined for single textile layers and then extended to real-shaped apparel, by taking into account structural properties of materials and the previously defined design/assembly rules. Several garment models are proposed as test cases, designed for real apparel manufacturing and simulated on virtual mannequins.
Nuno M.F. Alves, Paulo J.S. Bartolo, and Jose C. Ferreira
International Journal of Product Development, 2004, 1, 2, 183.
BioCAD, calibration, computer vision, distortion, human vision, photogrammetry, reverse design, biology based CAD, surface models, simulation, rapid prototyping, and photorealistic rendering.
A new biologically based CAD tool (BioCAD), based on a hybrid modelling approach, was developed for the rapid generation of computer models from existing large objects. This hybrid method uses the more appropriated algorithms and procedures from both photogrammetry and computer vision in combination with biologically based algorithms replicating the human vision process into a computer programme. This BioCAD system, designed to automatically produce high-quality models, uses two-dimensional (2D) photos to create three-dimensional (3D) computer models, either to produce sophisticated photo-realistic renderings, 2D drawings, or to generate surface models for simulation purposes and rapid prototyping applications. To achieve accurate results on the 3D computer models, all the error sources must be analysed. The calibration procedure is crucial, as errors arising from this first process will have a great impact on the 3D model. A detailed distortion analysis of digital images for BioCAD is performed in order to achieve a higher accuracy of results through a novel and automatic calibration procedure called "ciliary".
International Journal of Product Development, 2008, 6, 1, 36.
3D FEM, finite element method, rapid prototyping, temperature distribution, simulation, fractal scanning, selective laser sintering, SLS, selective laser melting, SLM, scanning patterns, thermal conductivity, specific heat, temperature changes, phase transformations, and powder-to-solid transitions.
A 3D finite element model is used to analyse the non-linear behaviours of thermal conductivity and of specific heat due to temperature changes, phase transformations and powder-to-solid transitions. Compared to the traditional 'S' scanning pattern, the influences of three kinds of fractal scanning patterns on the evolution of sintering temperature are investigated by using the FE model. It is shown that different scanning patterns have strong influences on the temperature distribution and the fractal scanning patterns can make the temperature distribution much more symmetrical than that of the 'S' scanning pattern. In addition, powder-to-solid transition also has an obvious influence on the temperature distribution.
This paper introduces an approach towards modelling and validation of mechanisms in the conceptual design phase applying virtual reality techniques and kinematics simulation. The presented system allows to interactively assemble mechanisms and to experience their behaviour within the same process. The described approach incrementally builds kinematic chains reducing stepwise degrees of freedom. Kinematics is expressed in terms of joints by geometric constraints, which are solved in real time during interaction with the virtual prototype.
Jack Goulding, Martin Sexton, Xiaonan Zhang, Mike Kagioglou, Ghassan Aouad, and Peter Barrett
Construction Management and Economics, 2007, 25, 12, 1239.
Design method, virtual prototyping, organizational learning, decision making, and simulation
The use of hybrid concrete technologies as a viable solution to traditional frame design has been inhibited by a general lack of information. The uptake of this technology has therefore been slow and parochial, as designers have tended to stay loyal to 'traditional', tried and tested technologies—their 'comfort zone'. This research identifies the barriers associated with technology adoption at industry, organization and individual levels; and uses hybrid concrete as the core context for discussion. The role of an enabling design support tool (HyCon) is presented, which can allow designers to overcome these inhibitors by providing an immersive, interactive and information-rich environment through which design solutions can be explored. This collaborative research project describes a 'proof of concept' design support tool to promote the use of hybrid concrete in structural frames. It encompasses knowledge creation, application and sharing functionality, to envision support and use of this new technology—thereby promoting organizational learning. Research findings note that, while design tools have a valuable role to play, it is also important to appreciate that the uptake of any new technology is a social phenomenon, and that subsequent adoption/uptake requires careful embedding and augmentation into company organizational systems in order to leverage advantage.
Joshi, Anupam, Drashansky, Tzvetan, Rice, John, Weerawarana, Sanjiva, and Houstis, Elias
Mathematics and Computers in Simulation (MATCOM), 1997, 44, 1, 43.
Distributed problem solving, Agent-based computing, Simulation, Heterogeneous models, and Software reuse and evolution
Electronic protoyping is becoming a part of every scientific inquiry and product design, and is the focus of research in the new scientific field of Computational Science and Engineering. The new grand challenge here is the rapid prototyping of manufactured artifacts and the rapid solution to problems with numerous interrelated elements. This, in turn, requires the fast, accurate simulation of physical processes and design optimization using knowledge and computational models from multiple disciplines in science and engineering. In this paper, we formulate a mathematical and software framework for complex rapid prototyping. Its design utilizes the current computer network infrastructures and high performance computation technologies. Its functionality includes adaptability and intelligence with respect to end-users and hardware platforms. We present the architecture of this framework, named SciAgents, using a multi-agent software model encapsulating a collaborating mathematical method. We also briefly discuss some issues related to legacy software reuse that we faced in the implementation. The design of SciAgents allows wholesale reuse of scientific software and provides a natural approach to parallel and distributed problem solving.
Impact of Socio-economic and Technological Transformations at National, European and International Level (ISETT), 2015, 8.
Smoothed Particle Hydrodynamics, modelling, simulation, and meshing
In challenging with a modern, complex and advanced engineering system, specialists must use a very sophisticated process in modelling, simulation, visualisation, analysis, designing, prototyping, testing, fabrication and construction. In analysis of advanced engineering systems there are a large number of physical phenomena, so many that is not possible to model and simulate them all, just the major phenomena which affect the performance of the system. In this paper will try to establish the benefits of using meshfree methods (SPH). In the traditionally FEM (finite element method), the problem spatial domain is discretized into meshes. The meshfree method is used to establish a system of algebraic equations for the whole problem domain without the use of predefined mesh. The most important goal is developing meshfree methods reduced cost to create a quality meshes for practical problems with complicated geometries.
International Journal of Information Technology and Management, 2006, 5, 1, 37.
project size, productivity measurement, software business, software projects, process management, information flow, system dynamics, simulation, and project management.
Process management tools aim to reduce information flow complexity in product development, in the function where most work is organised through projects. In technically challenging project environments, the total number of known technological solutions is high, reuse of old work is low and productivity improvement is rare. This paper analyses the management of a software company by using system dynamics simulation. The model results are compared with real project data collected from a software company; we evaluate six different Java-projects with two operative productivity measures. According to the results, it seems that even smaller projects have opportunities to achieve high productivity, but this only happens occasionally. Analysis further reveals that the most important limitation for productivity enhancement is the final stage of a particular software project (last 15â€“20% of completion). Therefore, we propose that managing information flows in the final stages of software project is vital for future success of the software, and we argue that performance is strongly connected in the used project management approach (waterfall, increment, prototyping).
queues, simulation, professional, and OR/MS education
Process-driven spreadsheet queuing simulation is a better vehicle for understanding queue behavior than queuing theory or dedicated simulation software. Spreadsheet queuing simulation has many pedagogical benefits in a business school end-user modeling course, including developing students' intuition, giving them experience with active modeling skills, and providing access to tools. Spreadsheet queuing simulations are surprisingly easy to program, even for queues with balking and reneging. The ease of prototyping in spreadsheets invites thoughtless design, so careful spreadsheet programming practice is important. Spreadsheet queuing simulation is inferior to dedicated simulation software for analyzing queues but is more likely to be available to managers and students.