期刊
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
卷 63, 期 -, 页码 106-117出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijimpeng.2013.08.007
关键词
Multi-cell lattice tube; Plastic deformation mode; Mean crushing force; Energy absorption
资金
- National Natural Science Foundation of China [11172089, 11372095]
- Program for New Century Excellent Talents in University, Fund of State Key Laboratory of Structural Analysis for Industrial Equipment [GZ1002]
- Fund of State Key Laboratory of Automotive Safety and Energy of Tsinghua University [KF11031]
- Science Fund for Creative Research Groups of the National Natural Science Foundations of China [51021001]
To enhance the energy absorbing ability of thin-walled structures, multi-cell tubes with triangular and Kagome lattices were designed and manufactured. Quasi-static axial compression experiments were carried out to reveal the progressive collapse mode and folding mechanism of thin-walled multi-cell tubes. Combining with the experiments, deformation styles were revealed and classical plastic models were suggested to predict the mean crushing forces of multi-cell tubes. Compared with anti-crushing behaviors of single-cell tubes, multi-cell lattice tubes have comparable peak loads while much greater mean crushing forces, which indicates that multi-cell lattice tubes are more weight efficient in energy absorption. (C) 2013 Elsevier Ltd. All rights reserved.
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