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computer-aided design models

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003523
EISBN: 978-1-62708-180-1
... consists of simple mathematical modeling of a physical system or more complex computer modeling of a system or part, the modeling technique may directly or indirectly give insight to the cause of an accident. Accident Reconstruction The term “accident reconstruction” has traditionally been used...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... and mainframe platforms. Generating models through interactive design and importing model geometry from computer-aided design software is making FEA analysis much easier. However, with this increased ease comes the increased need to correctly understand and interpret FEA results. Care must be taken so...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
.... Currently there are numerous commercial software packages available with a variety of options designed for use on all types of personal computer (PC) and mainframe platforms. Generating models through interactive design and importing model geometry from computer-aided design (CAD) software is making FEA...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
... of integrated computational materials engineering (ICME) has also emerged in materials selection. This goes one step further and is intended to actually design materials for specific applications by modeling processing/structure/property relationships. It is necessary in ICME to use a number of different models...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
... principles of FEA, as described in more detail in the article “Finite-Element Modeling in Failure Analysis” in this Volume. Originally, the most common use for FEA was design. However, with the increasing speed of computers and the number of qualified personnel capable of performing FEA, it is more commonly...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003503
EISBN: 978-1-62708-180-1
... in Fig. 2 . This type of hierarchical model reflects the way in which the system design develops by first defining the system functions, then subdividing the system into smaller subsystems. The levels in the model are often called levels of indenture —a result of documentation techniques in which...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006942
EISBN: 978-1-62708-395-9
... is then analyzed by a computer, and the scans are stitched together to create a 3D model of the surface. When used from multiple orientations, a 3D model of the entire component can be created. The resultant model can then be incorporated into a computer-aided design (CAD) file, which can then be used to generate...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006868
EISBN: 978-1-62708-395-9
... review prior to fabrication of custom part tooling, is vital in mitigating the development risks and ensuring a successful project outcome. Making changes and alterations to a computer-aided design (CAD) file takes some investment of time, but making these changes is nothing when compared to repairing 8...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... include failure mode and effects analysis, failure mode, effect, and criticality analysis, fault tree analysis, and fault hazard analysis. These formalized methodologies use systematic evaluation and sophisticated computer programs to predict failure in complicated designs and can be an invaluable aid...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001788
EISBN: 978-1-62708-241-9
... Abstract Several failed dies were analyzed and the results were used to evaluate fatigue damage models that have been developed to predict die life and aid in design and process optimization. The dies used in the investigation were made of H13 steels and fractured during the hot extrusion of Al...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006938
EISBN: 978-1-62708-395-9
... in everything from full-featured dedicated software platforms to add-ins or packages in computer aided design (CAD) software platforms. As a result of this democratization of FEA, designers should not be limited in their access to sophisticated stress analysis. However, while the tools are available...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... to a machine, and control the build. A solid model is obtained by computer-aided-design software or 3D object scanners, and the part is additively built, typically layer upon layer, into the precise geometric shapes of the digital model. Polymers were used first in the development of modern AM technology...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001309
EISBN: 978-1-62708-215-0
... compounded by the stress concentration factors at the tube joints and the dynamic loading seen in service, the frame could be regularly subjected to stresses over the fatigue limit of the material. Besides being used as an analytical tool, the ANSYS program was used as a design aid to develop the frame...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... programs, enhanced analytical modeling and prediction techniques, accurate life assessment methods, and a fortified commitment to avoid the recurrence of these failures through improved designs. The examples cited in Table 1 were serious and often tragic failures that had a great impact on structural...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006802
EISBN: 978-1-62708-329-4
... Consideration given to causes for brittle fracture Tacoma bridge failure ( Ref 6 , 7 ) 1940 Aerodynamic instability and failure caused by wind vortices and bridge design Sophisticated analytical models developed for resonance Bridge design changed to account for aerodynamic conditions World War II...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
... in cyclic service to mitigate fatigue damage and to optimize damage tolerance and useful operating life. Modern computing capabilities also make detailed analytical and design by analysis (DBA) techniques feasible for critical fatigue problems. For in-service equipment that originally may not have been...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001732
EISBN: 978-1-62708-218-1
.... The Weibull distribution is the statistical model used as a basis for these techniques. This method of failure analysis provides the engineer with clear, positive design direction. Door lock assembly Fatigue (materials) Statistical analysis Weibull distribution Metal (Other, miscellaneous...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001149
EISBN: 978-1-62708-232-7
... indicate that the actual gas inlet temperature at the hot end of the duct was in the range from 540°C To 595°C (1000°F to 1100°F) during the period of south duct operation at 22 megawatts. The computer model illustrated on Figs. 10 and 11 shows a gap between the duct and the stiffener ring. Field...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006919
EISBN: 978-1-62708-395-9
... analyses, using either simple closed-form equations or the more precise numerical predictions often used in design. For example, with an elastic material model, the strain rate in an impacted component can be approximated. Using this approximation for strain rate and the temperature to which the component...