COVIRDS: Shape Modeling in a Virtual Reality Environment

1997 ◽  
Author(s):  
Tushar H. Dani ◽  
Chi-Cheng P. Chu ◽  
Rajit Gadh
Keyword(s):  
Computer Aided Design ◽  
Visual Display ◽  
Design Stage ◽  
Design System ◽  
Concept Design ◽  
Virtual Design ◽  
Cad Systems ◽  
Product Concept ◽  
Shape Models ◽  
Solid Models

Abstract Rapid shape creation and visualization of solid models remains a tedious task despite advances in the field of Computer Aided Design (CAD)/Solid Modeling. CAD systems require a significant level of detail, such as vertices, edges, and faces to be specified by the user, even before the simplest of shapes can be created and viewed. In addition, most CAD systems have an essentially 2D interface for designing artifacts. This makes artifact visualization, for example by interactive rotation, difficult since all manipulations have be achieved by 2D translation of the mouse or by typing in the required angles of rotation. The limited visualization capability and the requirement to create shapes through the specification of low level entities is especially cumbersome in the concept shape design stage. This paper describes the Conceptual Virtual Design System, COVIRDS, a tool for product concept design. COVIRDS provides an intuitive voice and hand input-based interface for modeling of products using a ‘construction’ approach. Product shape models are created by ‘attaching’ simpler parametrically defined ‘Shape Elements’ to other elements to create more complex models. Voice commands are used to instantiate shape elements and change their parameters, for example, the width, length and height of a block element. 3D hand input is used for positioning shape elements during element attachment. The voice and hand input-based interface together with a stereoscopic visual display facilitates rapid creation and visualization of concept shape models.

Highways Design Taking into Account Climatic Features in the Route Area

2021 ◽  
pp. 125-136
Author(s):  
Т. В. Самодурова ◽  
Н. Ю. Алимова ◽  
О. А. Волокитина ◽  
О. В. Гладышева
Keyword(s):  
Bearing Capacity ◽  
Computer Aided Design ◽  
Systematic Approach ◽  
Weather Conditions ◽  
Design Stage ◽  
Design System ◽  
Computer Aided ◽  
Calculation Methodology ◽  
Aided Design ◽  
Climatic Features

Постановка задачи. Для получения оптимальных проектных решений, удовлетворяющих условиям безопасности движения в сложных погодных условиях, необходимо сравнение вариантов автомобильных дорог по условиям снегонезаносимости. Такие расчеты должны стать составной частью системы автоматизированного проектирования САПР-АД. Результаты. Предложен системный поход к решению задачи, определен перечень информации, необходимой для проведения расчетов. Выполнен анализ результатов исследований по снегозаносимости дорог, проводимых в России и за рубежом. Предложены расчетные схемы и модели для оценки вариантов продольного профиля и земляного полотна автомобильной дороги по снегозаносимости. Предложены решения для оценки вариантов плана трассы с использованием карт с расчетными параметрами метелей. Выводы. Реализация предложенной методики проведения расчетов позволит на стадии проектирования оценить варианты автомобильной дороги по условиям снегозаносимости. Statement of the problem. In order to obtain optimal design solutions that meet the conditions of safety traffic in difficult weather conditions, it is necessary to compare the options of highways according to the snow tolerance conditions. Such calculations should become an integral part of the CAD-AD computer-aided design system. Results. A systematic approach to solving the problem is set forth, a list of information necessary for calculations is identified. The results analysis of studies on the snow-bearing capacity of roads conducted in Russia and abroad is carried out. Calculation schemes and models are suggested to evaluate options for the longitudinal profile and the roadbed for the snow-bearing capacity. Solutions for evaluating variants of the route plan using maps with calculated parameters of snowstorms are proposed. Conclusions. The implementation of the proposed calculation methodology will make it possible at the design stage to evaluate the options of the highway according to the conditions of the snow-bearing capacity.

Research on Welded Pipe and Tube Pass Design Virtual Methods

2013 ◽  
Vol 690-693 ◽  
pp. 2643-2646
Author(s):  
Guo Chang Li
Keyword(s):  
Computer Aided Design ◽  
Design Method ◽  
Design System ◽  
Roll Pass Design ◽  
Pass Design ◽  
Virtual Design ◽  
Roll Pass ◽  
Welded Pipe ◽  
Aided Design ◽  
Pipe Manufacture

Welded pipe and special pipe get more and more applications; however, the difficulty of pass design method limits welded pipe manufacture. The paper discusses welded pipe roll pass design method based on CATIA, and roll CAD/CAPP computer aided design system based on AutoCAD, and gives roll virtual design methods which use roll CATIA, CAD/CAPP system.

Research on Virtual Prototyping Development of Product Information Modeling Method

2010 ◽  
Vol 129-131 ◽  
pp. 658-663 ◽  
Author(s):  
Tian Chen
Keyword(s):  
Virtual Environment ◽  
Information Exchange ◽  
Product Information ◽  
Virtual Prototyping ◽  
Information Modeling ◽  
Product Development Process ◽  
Design Stage ◽  
Concept Design ◽  
Virtual Design ◽  
Virtual Product

In the heterogeneous environment, fast and real-time information exchange is the requirements of rapid developing and information integrated for mechanical products. Meanwhile, it is also the basis and guarantee of virtual prototyping. This paper analyzes the process of mechanical product design, particularly starts from the concept design stage of virtual product to achieve information sharing and building information models, put forward a software network environment based on objects and STEP standards for integrated information model and the basic PVPIIM framework, application protocol's development, leaf characteristics of the definition and expressions. Furthermore, we proposed a distributed virtual environment in the virtual prototyping development and make it support the whole pump virtual product development process on basis of PVPIIM for an integrated virtual environment, where we use virtual reality modeling language VRML to describe the 3D geometric shape, material, texture, color and virtual design background of pump parts.

Geometric Modeling and Collaborative Design in a Multi-Modal Multi-Sensory Virtual Environment

2000 ◽  
Author(s):  
Rajarathinam Arangarasan ◽  
Rajit Gadh
Keyword(s):  
Virtual Environment ◽  
Design Process ◽  
Collaborative Design ◽  
Computer Aided Design ◽  
Geometric Modeling ◽  
Shape Modeling ◽  
Design System ◽  
Design Environment ◽  
Virtual Design ◽  
Design Cycle

Abstract Shape modeling plays a vital role in the design process but often it is the most tedious task in the whole design cycle. In recent years the Computer Aided Design (CAD) industry has evolved through a number of advances and developments in design methodology. However, modeling in these CAD systems requires expertise and in-depth understanding of the modeling process, user interface and the CAD system itself, resulting in increased design cycle time. To overcome these problems a new methodology and a system called “Detailed Virtual Design System” (DVDS) has been developed for detailed shape modeling in a multi-modal, multi-sensory Virtual Environment (VE). This system provides an intuitive and natural way of designing using hand motions, gestures and voice commands. Due to the lack of effective collaborative design, visualization and analysis tools, designers spend a considerable amount of time and effort in the group discussion during design process. To enable multiple designers to effectively and efficiently collaborate in a design environment, framework of a collaborative virtual environment, called “Virtual Environment to Virtual Environment” (V2V), has been discussed. This framework allows same site and remote site multi-modal, multi-sensory immersive interface between designers.

Development of a semi-automated die casting die design system

2002 ◽  
Vol 216 (12) ◽  
pp. 1575-1588 ◽  
Author(s):  
J Y H Fuh ◽  
S H Wu ◽  
K S Lee
Keyword(s):  
Computer Aided Design ◽  
Die Casting ◽  
Die Design ◽  
Design System ◽  
Prototype System ◽  
Market Demand ◽  
Cad Systems ◽  
Cad System ◽  
Die Casting Die ◽  
Computer Aided

The die casting industry has an imperative need for an automated or semi-automated approach for die casting die design. One of the key challenges that die makers face is how to shorten the lead-time to the market and reduce the cost in die design and manufacturing. Most die makers have employed computer aided design (CAD) systems to improve the efficiency and quality of die design. However, conventional CAD systems do not have the functionality specially for the die casting die design, therefore, a specific computer aided system for die casting die design is needed to meet the market demand. This paper describes a prototype system structured by several functional modules as specific add-on applications on a commercial CAD system for die casting die design. These modules include data initialization, cavity layout, gating system design, die-base, parting, standard component design, etc. Focus of the development will be placed on gating, runner and die-base design.

Construction of Computer-Aided Design System for Shoes

2014 ◽  
Vol 644-650 ◽  
pp. 2647-2651
Author(s):  
Ming Hui Li ◽  
Xu Liu
Keyword(s):  
Computer Aided Design ◽  
Design Methods ◽  
Design Tool ◽  
Design System ◽  
Design Verification ◽  
Concept Design ◽  
Customer Needs ◽  
Design Performance ◽  
Computer Aided ◽  
Aided Design

Based on the shoes design methods and processes of analysis and summary, the computer-aided design as a design tool to intervene to determine concept , design performance and design verification stages. TO build a market to meet customer needs as the guiding ideology of the computer-aided design system shoes finally.

scholarly journals МАШИНА ДЛЯ ОБРОБКИ ДЕТАЛЕЙ З СЕМИЛАНКОВИМ ПРОСТОРОВИМ МЕХАНІЗМОМ - СИНТЕЗ ТА ДОСЛІДЖЕННЯ

2021 ◽  
Vol 148 (4) ◽  
pp. 38-47
Author(s):  
М. Г. Залюбовський ◽  
І. В. Панасюк ◽  
В. В. Малишев
Keyword(s):  
3D Modeling ◽  
Computer Aided Design ◽  
Machine Building ◽  
Geometric Parameters ◽  
Practical Significance ◽  
Design Stage ◽  
Design Parameters ◽  
Design System ◽  
Structural Synthesis ◽  
Spatial Mechanism

Synthesis of a seven-link spatial statically determined mechanism without redundant (passive) connection with an additional moving link of a machine for processing parts, followed by an analytical study of its main structural and geometric parameters. Methodology.  An  analytical  research  method  was  used  based  on  the  geometric  and  structural synthesis  of  a  spatial  seven-link  statically  defined  mechanism  with  an  additional  movable  link  without redundant communication of the machine for processing parts; 3D modeling of the machine was performed in the SolidWorks 2016 computer-aided design system. Results.  On  the  basis  of  structural  synthesis,  the  design  of  a  seven-link  spatial  statically  defined mechanism  with  an  additional  movable link  of  the machine for processing  parts is  proposed,  there is  no redundant  connection  in  the  kinematic  chain  of  the  spatial  mechanism,  3D  modeling  of  the  machine  is performed  in  the  CAD  system  SolidWorks  2016.  Analytical  studies  of  the  main  geometric  and  design parameters of the developed machine are carried out. Scientific novelty. The relationship between various geometric parameters of the spatial seven-link statically determined mechanism is established, which makes it possible to calculate the optimal ratio of the lengths of the links of the mechanism to ensure the smooth functioning of the machine without jamming its spatial mechanism.  Practical significance. A new design of a machine for processing parts has been developed, based on  a  seven-section  spatial  statically  determined  mechanism  with  an  additional  moving  link  without redundant  communication.  Mathematical  dependences  are  obtained  for  calculating  its  basic  design  and geometric parameters. These dependencies can be used by the corresponding machine-building enterprises at the design stage of this type of equipment.

Collaborative development using EMProDS: The electromechanical product design system

2002 ◽  
Vol 216 (3) ◽  
pp. 453-457 ◽  
Author(s):  
R Farr ◽  
A Gayretli ◽  
H Speller ◽  
N Gindy
Keyword(s):  
Computer Aided Design ◽  
Software Tool ◽  
Design Stage ◽  
Design System ◽  
Common Source ◽  
Design Environment ◽  
Electromechanical Products ◽  
Detailed Computer ◽  
Aided Design ◽  
Electromechanical Product

Among manufactured products, electromechanical devices are something of a special case, requiring input at the earliest design stage of experts from two (or more) distinctly separate branches of engineering. This tends to promote a modular approach under which products are partitioned by function, with each module being either purely electrical or purely mechanical. However, customers' demands for smaller lighter, less expensive items with greater functionality force manufacturers to produce integrated systems. Furthermore, modules which function optimally in isolation may not produce an optimal assembly. This paper describes an alternative approach to the conceptual design of electromechanical products, in which a software tool promotes the communication of ideas and opinions. EMProDS provides an easy-to-use distributed design environment, meant to preserve as far as possible the intent of the design team—an aspect of design which can easily be lost once detailed computer aided design drawings are made. This makes any redesign activity which is required simpler and eliminates a common source of conflict between specialists with different technical backgrounds.

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