computer-aided design

(redirected from 3D CAD)
Also found in: Dictionary, Thesaurus, Medical, Financial.

computer-aided design

computer-aided design (CAD) or computer-aided design and drafting (CADD), form of automation that helps designers prepare drawings, specifications, parts lists, and other design-related elements using special graphics- and calculations-intensive computer programs. The technology is used for a wide variety of products in such fields as architecture, electronics, and aerospace, naval, and automotive engineering. Although CAD systems originally merely automated drafting, they now usually include three-dimensional modeling and computer-simulated operation of the model. Rather than having to build prototypes and change components to determine the effects of tolerance ranges, engineers can use computers to simulate operation to determine loads and stresses. For example, an automobile manufacturer might use CAD to calculate the wind drag on several new car-body designs without having to build physical models of each one. In microelectronics, as devices have become smaller and more complex, CAD has become an especially important technology. Among the benefits of such systems are lower product-development costs and a greatly shortened design cycle. While less expensive CAD systems running on personal computers have become available for do-it-yourself home remodeling and simple drafting, state-of-the-art CAD systems running on workstations and mainframe computers are increasingly integrated with computer-aided manufacturing systems.
The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.

Computer-aided design

The analysis and/or design, modeling, simulation, or layout of building design with the aid of a computer.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

computer-aided design

[kəm′pyüd·ər ‚ād·əd də′zīn]
(control systems)
The use of computers in converting the initial idea for a product into a detailed engineering design. Computer models and graphics replace the sketches and engineering drawings traditionally used to visualize products and communicate design information. Abbreviated CAD.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

computer-aided design (CAD)

The analysis and/or design, and/or modeling, and/or simulation, and/or layout of building design with the aid of a computer.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.


(Computer-Aided Design) Using high-speed desktop computers to design products. Either a mouse or graphics tablet is used for the physical drawing, and a scanner may be attached for additional input. The output of a CAD system is often electronically transmitted to a computer-aided manufacturing (CAM) system or 3D printer, which builds the objects (see CAD/CAM and 3D printing).

Generic or Specialized
CAD software is available for generic design or specialized uses, such as architectural, electrical and mechanical. The software may also be highly specialized for creating products such as printed circuits and integrated circuits.

Solid and Parametric Modeling
More complex forms of CAD are solid modeling and parametric modeling, which allows objects to be created with real-world characteristics. For example, in solid modeling, objects can be sectioned (sliced down the middle) to reveal their internal structure. In parametric modeling, objects have meaningful relationships with each other (a door must be on a wall, not the floor; holes cannot be drilled too close to the edge, etc.). See wireframe modeling, surface modeling, solid modeling, parametric modeling, graphics and CAE.

Two or Three Dimensions
While 2D CAD programs work for some applications, they are essentially the computer counterpart to hand-drawn objects. In contrast, 3D CAD enables objects to be drawn with sides, top and bottom so they can be manipulated as a whole and viewed from any angle.

From Rivets to Trees
Some CAD software suites can take the finished object and render it as a real-world entity. This building was designed in MicroStation Modeler and rendered in MicroStation MasterPiece from Bentley Systems. (Image courtesy of Bentley Systems, Inc. and Cooper Carry.)
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Each component is realized as a rigid body (Fig.5b), whose mass and geometric properties are automatically calculated from SOLIDWORKS 3D CAD models.
The global 3D CAD market is also witnessing several partnerships among the 3D CAD providers, and government and non-government organizations.
The 3D CAD image of template with patient mandible is shown in Figure 4b below.
The higher-end Visionary Render software allows users to animate models and feed back changes made in VR to the original 3D CAD environment.
These experiences can incorporate or make use of 3D CAD data and ThingWorx IoT data, which can be identified by the ThingMark(TM), a code that is unique to the object or product.
The extremely large size of 3D CAD files means data is shared by sending DVDs or e-mail, network syncing or other method.
With the diversification of customer needs as well as the application of 3D CAD systems, product design process gradually exhibits features of parameterization, repeatability, feature-driven and information integration.
In order to assist engineers in sharing and acquiring project knowledge linked within a CAD-based environment, the main purpose for conducting this research is to develop CBIMKM system for involved engineers to enhance visual knowledge sharing and management efficiency in the 3D CAD environment.
Since its introduction earlier this year in Chennai, Express 3D has been very well received by users all across South Express 3D a multi-format 3D CAD viewer.
* 3D CAD models will help customers to search, select, design and buy from RS;
ProcessFlows and Desktop Engineering (DTE), supplier of CAD design software and Product Lifecycle Management (PLM) solutions to the automotive, aerospace, motor sport and architectural industries, are partnering to deliver 3D parts management and enhanced shape search functionality for Dassault Catia 3D CAD Design customers.
At INDEX 2010, (hall 2, stand B94), D2M Solutions will be showing a range of technology solutions (hardware and software), that can create value for the designer, amongst which are: 'Catia Design', from Dassault Systemes, (an advanced 3D CAD environment for challenging design projects), a Dimension 3D Printer from Stratasys Inc.