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Structural Optimization for Roof Crush Test Using an Enforced Displacement Method

Title
Structural Optimization for Roof Crush Test Using an Enforced Displacement Method
Author
박경진
Keywords
Roof crush test; Structural optimization; FMVSS 216; EQUIVALENT STATIC LOADS; RESPONSE TOPOLOGY OPTIMIZATION; VEHICLE; DESIGN; STRENGTH
Issue Date
2018-04
Publisher
KOREAN SOC AUTOMOTIVE ENGINEERS-KSAE
Citation
INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY, v. 19, No. 2, Page. 291-299
Abstract
A roof crush test has been utilized to reduce passengers' injuries from a vehicle rollover. The Federal Motor Vehicle Safety Standards (FMVSS) 216 and the Insurance Institute for Highway Safety (IIHS) perform actual vehicle tests and evaluate the vehicle's ratings. Nonlinear dynamic response structural optimization can be employed not only for achievement of a high rating but also minimization of the weight. However, the technique needs a huge computation time and cost because many nonlinear dynamic response analyses are required in the time domain. A novel method is proposed for nonlinear dynamic response structural optimization regarding the roof crush test. The process of the proposed method repeats the analysis domain and the design domain until the convergence criteria are satisfied. In the analysis domain, the roof crush test is simulated using a high fidelity model of nonlinear dynamic finite element analysis. In the design domain, a low fidelity model of linear static response structural optimization is utilized with enforced displacements that come from the analysis domain. Correction factors are employed to compensate the differences between a nonlinear dynamic analysis response and a linear static analysis response with enforced displacement. A full-scale vehicle problem is optimized with a constraint on the rigid wall force from the analysis in the design domain.
URI
https://link.springer.com/article/10.1007/s12239-018-0028-xhttps://repository.hanyang.ac.kr/handle/20.500.11754/81021
ISSN
1229-9138
DOI
10.1007/s12239-018-0028-x
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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