| Popis: |
This work reveals the interaction effect on energy absorption of bi-tubular, a combination of outer circular tube with inner polygonal tube structures under quasi-static axial crushing. First, the experimental mean crushing force of single tubes was compared with theoretical prediction, and it witnesses good agreement between them. In bi-tubular arrangement, the inscribed diameter of inner polygonal tubes plays an important role in improving the mean crushing force by interaction effect. The mean crushing force of bi-tubular specimens D3T, D3S, and D3H has 35, 26, and 10.1% higher than the summation of their individual single tubes that is SC with S3T or S3S or S3H. |
