Simulation of Hammering Hydroforming by Static Explicit FEM
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- Hama Takayuki
- Department of Mechanical Engineering, Waseda University Institute of Physical and Chemical Research-RIKEN
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- Asakawa Motoo
- Department of Mechanical Engineering, Waseda University
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- Fukiharu Hiroshi
- Advanced Simulation Technology of Mechanics R&D, Co. Ltd.
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- Makinouchi Akitake
- Institute of Physical and Chemical Research-RIKEN
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Abstract
Recently, tube hydroforming is receiving increasing attention. Knowledge on the process is, however, still insufficient to produce high-quality products in an efficient way. Hammering hydroforming, in which the hydraulic pressure is pulsated synchronously with axial feeding, is an effective method of improving forming ability. However, the factors that cause the improvement are still unclear. In the research reported in this paper, simulations of an automotive component produced by hammering hydroforming have been performed using a static explicit finite-element method code, which was developed in this study. The simulation results showed a good agreement with the experiment, thus validating the hammering hydroforming simulation by the developed code. The factors that improve the forming ability were also investigated by simulation. It was clarified that the hammering forming has the advantage of obtaining enough expansion as well as the regular forming with the lower friction force by using the lower pressure history. Moreover, that roughly the same effect as lowering the friction coefficient could be achieved by the hammering hydroforming.
Journal
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- ISIJ International
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ISIJ International 44 (1), 123-128, 2004
The Iron and Steel Institute of Japan
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Keywords
Details
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- CRID
- 1390282681429671296
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- NII Article ID
- 10012899270
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- NII Book ID
- AA10680712
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- ISSN
- 13475460
- 09151559
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed