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Computer-aided engineering

 
Sci-Tech Dictionary: computer-aided engineering
 
(kəm′pyüd·ər ′ād·əd ′en·jə′nir·iŋ)

(engineering) The use of computer-based tools to assist in solution of engineering problems.


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Sci-Tech Encyclopedia: Computer-aided engineering
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Any use of computer software to solve engineering problems. With the improvement of graphics displays, engineering workstations, and graphics standards, computer-aided engineering (CAE) has come to mean the computer solution of engineering problems with the assistance of interactive computer graphics. See also Computer graphics.

CAE software is used on various types of computers, such as mainframes and superminis, engineering workstations, and even personal computers. The choice of a computer system is frequently dictated by the computing power required for the CAE application or the level (and speed) of graphics interaction desired. The trend is toward more use of engineering workstations, especially a new type known as supergraphics workstations. See also Digital computer; Microcomputer.

Design engineers use a variety of CAE tools, including large, general-purpose commercial programs and many specialized programs written in-house or elsewhere in the industry. Solution of a single engineering problem frequently requires the application of several CAE tools. Communication of data between these software tools presents a challenge for most applications. Data are usually passed through proprietary neutral file formats, data interchange standards, or a system database.

A typical CAE program is made up of a number of mathematical models encoded by algorithms written in a programming language. The natural phenomena being analyzed are represented by an engineering model. The physical configuration is described by a geometric model. The results, together with the geometry, are made visible via a user interface on the display device and a rendering model (graphics image). See also Algorithm; Computer programming; Programming languages.

Computer-aided design and manufacturing (CAD/CAM) systems were created by the aerospace industry in the early 1960s to assist with the massive design and documentation tasks associated with producing airplanes. CAD/CAM systems have been used primarily for detail design and drafting along with the generation of numerical control instructions for manufacturing. Gradually, more CAE functions are being added to CAD/CAM systems. Modeling with CAD/CAM systems has become fairly sophisticated. Most popular commercial systems support 2D and 3D wireframe, surface models and solid models. Rendered surface models differ from solid models in that the latter have full information about the interior of the object. For solid models a combination of three types of representation is commonly used: constructive solid geometry, boundary representation, and sweep representation. See also Computer-aided design and manufacturing.

The CAE methods for electrical and electronics engineering are well developed. The geometry is generally two-dimensional, and the problems are primarily linear or can be linearized with sufficient accuracy. Chemical engineering makes extensive use of CAE with process simulation and control software. The fields of civil, architectural, and construction engineering have CAE interests similar to mechanical CAE with emphasis on structures. Aerospace, mechanical, industrial, and manufacturing engineering all make use of mechanical CAE software together with specialized software.


 
Abbreviations: CAE
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is short for:

Meaning Category
Caffeine Aspirin And EphedrineMedical->Physiology
Canadian Aviation ElectronicsBusiness->Firms
Capillary Array ElectrophoresisMedical->Human Genome
Cascade CorporationBusiness->NYSE Symbols
Center For Academic ExcellenceAcademic & Science->Universities
Certified Association ExecutiveBusiness->Positions
Child Abduction EmergencyCommunity->Law
Client Application EnablerComputing->Networking
Collective Agriculture EnterpriseBusiness->Firms
Columbia, South Carolina USARegional->Airport Codes
Comité d'Acción d'EnsenyantsInternational->Spanish
Common Application EnvironmentGovernmental->Military
Computing->General
Compositeur Auteur EditeurBusiness->Positions
Computer Aided EngineeringAcademic & Science->Electronics
Governmental->Military
Computing->General
Computer Aided EstimatingBusiness->General
Computer Assisted EducationComputing->General
Control Y AplicacionesInternational->Spanish
Control and Actuation ElectronicGovernmental->NASA
Critical Art EnsembleCommunity->Media
Customer Aided EstimatingBusiness->General

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Wikipedia: Computer-aided engineering
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Nonlinear static analysis of a 3D structure subjected to plastic deformations with Code-Aster.

Computer-aided engineering (often referred to as CAE) is the use of information technology to support engineers in tasks such as analysis, simulation, design, manufacture, planning, diagnosis, and repair.

Contents

Overview

Software tools that have been developed to support these activities are considered l tools. CAE tools are being used, for example, to analyze the robustness and performance of components and assemblies. The term encompasses simulation, validation, and optimization of products and manufacturing tools. In the future, CAE systems will be major providers of information to help support design teams in decision making.

In regard to information networks, CAE systems are individually considered a single node on a total information network and each node may interact with other nodes on the network.

CAE systems can provide support to businesses. This is achieved by the use of reference architectures and their ability to place information views on the business process. Reference architecture is the basis from which information model, especially product and manufacturing models.

The term CAE has also been used by some in the past to describe the use of computer technology within engineering in a broader sense than just engineering analysis. It was in this context that the term was coined by Dr. Jason Lemon, founder of SDRC in the late 70's. This definition is however better known today by the terms CAx and PLM.

CAE fields and phases

CAE areas covered include:

In general, there are three phases in any computer-aided engineering task:

  • Pre-processing – defining the model and environmental factors to be applied to it. (typically a finite element model, but facet, voxel and thin sheet methods are also used)
  • Analysis solver (usually performed on high powered computers)
  • Post-processing of results (using visualization tools)

This cycle is iterated, often many times, either manually or with the use of commercial optimization software.

CAE in the automotive industry

CAE tools are very widely used in the automotive industry. In fact, their use has enabled the automakers to reduce product development cost and time while improving the safety, comfort, and durability of the vehicles they produce. The predictive capability of CAE tools has progressed to the point where much of the design verification is now done using computer simulations rather than physical prototype testing. CAE dependability is based upon all proper assumptions as inputs and must identify critical inputs (BJ). Even though there have been many advances in CAE and it is widely used in the engineering field. Physical testing is still used as a final confirmation for subsystems due to the fact that CAE cannot predict all variables in complex assemblies (i.e. metal stretch, thinning).

Software such as Altair RADIOSS, LSTC’s LS-DYNA, Cranes CAE suite [1] and ESI’s PAM-CRASH is used for Automotive crashworthiness and Occupant safety. Tools like eta/VPG, NISA [2], Altair HyperWorks[3], BETA CAE Systems' [4], MSC’s Patran, MSC’s ADAMS, LMS's Virtual.Lab [5], SIMPACK [6], NEi Nastran and UGS’s Scenario and Nastran packages are used in a variety of structural and dynamic analysis tasks. Other tools like LMS's AMESim are used to analyze functional performance of multi-disciplinary systems.

See also

References

Further reading

  • B. Raphael and I.F.C. Smith (2003). Fundamentals of computer aided engineering. John Wiley. ISBN 978-0-471-48715-9.

External links


 
Translations: Cae
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Dansk (Danish)
abbr. - Computer Aided Engineering; computerstøttet design

Français (French)
abbr. - (abrév = computer-aided engineering) IAO ingénierie assistée par ordinateur

Deutsch (German)
abbr. - rechnergestützte Technik

Ελληνική (Greek)
abbr. - μηχανική ανάλυση με τη βοήθεια υπολογιστή

Español (Spanish)
abbr. - Ingeniería Asistida por Ordenador (Computer-aided Engineering)

Svenska (Swedish)
abbr. - CAE (datorstödd konstruktion)

中文(简体)(Chinese (Simplified))
计算机辅助教育, 计算机辅助工程

中文(繁體)(Chinese (Traditional))
abbr. - computer-aided engineering 之縮寫, 電腦輔助教育, 電腦輔助工程

한국어 (Korean)
abbr. - computer-aided engineering (전산 공학)

עברית (Hebrew)
abbr. - ‮ביצוע פעולות הנדסיות בסיוע מחשב‬


 
 

 

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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Sci-Tech Encyclopedia. McGraw-Hill Encyclopedia of Science and Technology. Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved.  Read more
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Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Computer-aided engineering" Read more
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