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Optimization of the loading path for the tube-hydroforming process

Title
Optimization of the loading path for the tube-hydroforming process
Author
박경진
Keywords
Structural optimization; equivalent static loads method; tube-hydroforming process; non-linear dynamic response optimization; optimization of the external force; EQUIVALENT STATIC LOADS; DESIGN SENSITIVITY ANALYSIS; METAL FORMING PROCESS; DYNAMIC LOADS; STRUCTURAL OPTIMIZATION; EXPERIMENTAL-VERIFICATION; SHAPE OPTIMIZATION; SIMULATION; PARAMETERS; ALGORITHM
Issue Date
2016-10
Publisher
SAGE PUBLICATIONS LTD
Citation
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, v. 230, No. 12, Page. 1605-1623
Abstract
In general, hydroforming optimization aims to make a desired shape of a plastically deformed structure under dynamic forces. The automotive industry has shown great interest in tube hydroforming, which is a metal-forming process. The forces from the hydraulic fluid are utilized to deform a tube. The internal pressures and the axial feedings (of the axial forces) determine the quality of the deformed product. In this research, an optimization process is employed to evaluate the appropriate external forces but defects are prevented. The equivalent static loads method for non-linear static response structural optimization is used for the optimization process because the tube-hydroforming process is analysed by non-linear dynamic response analysis. The equivalent static loads are the static loads that generate the same response field as that of non-linear dynamic analysis and are utilized as the loading conditions in linear static response optimization. A novel process is added to the original equivalent static loads method for non-linear static response structural optimization to address the objective function and the design variables for tube-hydroforming optimization. A new technique is proposed to use the external forces as the design variables in linear static response optimization. A few hydroforming examples are solved by using the newly proposed techniques.
URI
http://journals.sagepub.com/doi/abs/10.1177/0954407015618051https://repository.hanyang.ac.kr/handle/20.500.11754/70665
ISSN
0954-4070; 2041-2991
DOI
10.1177/0954407015618051
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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