Non-linear dynamic response structural optimization for frontal-impact and side-impact crash tests
Vehicle crash optimization is a representative non-linear dynamic response structural optimization that utilizes highly non-linear vehicle crash analysis in the time domain. In the automobile industries, crash optimization is employed to enhance the crashworthiness characteristics. The equivalent-static-loads method has been developed for such non-linear dynamic response structural optimization. The equivalent static loads are the static loads that generate the same displacement field in linear static analysis as those of non-linear dynamic analysis at a certain time step, and the equivalent static loads are imposed as external loads in linear static structural optimization. In this research, the conventional equivalent-static-loads method is expanded to the crash management system with regard to the frontal-impact test and a full-scale vehicle for a side-impact crash test. Crash analysis frequently considers unsupported systems which do not have boundary conditions and where adjacent structures do not penetrate owing to contact. Since the equivalent-static-loads method uses linear static response structural optimization, boundary conditions are required, and the impenetrability condition cannot be directly considered. To overcome the difficulties, a problem without boundary conditions is solved by using the inertia relief method. Thus, relative displacements with respect to a certain reference point are used in linear static response optimization. The impenetrability condition in non-linear analysis is transformed to the impenetrability constraints in linear static response optimization.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/09544070
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Supplemental Notes:
- Reprinted by permission of Sage Publications, Ltd.
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Authors:
- Lee, Youngmyung
- Park, Gyung-Jin
- Publication Date: 2017-4
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 600-614
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Serial:
- Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
- Volume: 231
- Issue Number: 5
- Publisher: Sage Publications Limited
- ISSN: 0954-4070
- EISSN: 2041-2991
- Serial URL: http://pid.sagepub.com/content/current
Subject/Index Terms
- TRT Terms: Crash analysis; Crash tests; Frontal crashes; Methodology; Programming (Mathematics); Side crashes; Static loads; Time domain analysis
- Subject Areas: Highways; Vehicles and Equipment;
Filing Info
- Accession Number: 01633474
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 28 2017 10:44AM