Abstract
Material properties are important design factors which affect structural crashworthiness & light-weight design level of an absorber. Collapsed modes of thin-walled circular tubes subject to axial loading with different material, including mild steel, aluminum alloy and stainless steel were simulated by LS-DYAN, and four kinds of section-shaped collapsed modes were found with one axial-symmetric section-shaped and three non-axial-symmetric section-shaped, including diamond-shaped, ellipse-shaped and square-shaped. The collapsed mode with ellipse-shaped section was found only among aluminum alloy tubes but not in mild steel and stainless steel. The energy absorption properties such as the specific load, the average specific load and the specific energy absorption were calculated quantitatively, and the effect of material on the energy absorption capability was analyzed. It transpires that the specific energy absorption of aluminum alloy tube is much more than that of mild steel tube and stainless steel tube, so aluminum alloy fits best for light-weight absorber design.
| Original language | English |
|---|---|
| Pages (from-to) | 62-65 |
| Number of pages | 4 |
| Journal | Suxing Gongcheng Xuebao/Journal of Plasticity Engineering |
| Volume | 17 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 2010 |
Keywords
- Axial collapsed behavior
- Numerical simulation
- Specific energy absorption
- Thin-walled circular tube
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