Axial crashworthiness analysis and optimization of a bionic thin-walled tube based on bamboo structure

作者：Xu Shucai; Zou Meng^*; Wei Cangang; Wang Longzhen; Zhang Jinhuan; Yu Yongjun

来源：Journal of Tsinghua University(Science and Technology), 2014, 54(3): 299-304.

• Axial impact
• Bamboo structures
• Bionic joints
• Optimal structures
• Response surface method
• Response surface optimization
• Specific energy absorption
• Thin walled tubes

A bionic tube composed of bionic joints, bionic units and bionic inner tubes was developed based on the bamboo structure to improve the crashworthiness and the energy absorption of thin walled tube resistance structures. The finite element method was used to simulate the axial impact with the response surface method used to obtain the optimal structure of the bionic energy-absorbing tube. The results show that the optimal structure of the bionic tube has a thickness of 1mm for the bionic units and a thickness of 0.628 mm for the bionic inner tubes, with the specific energy absorption being 157.57 kN and 34.33 kJ/kg, respectively. These studies provide new methods and ideas for improving crashworthiness energy absorption of thin-walled structures.

• 出版日期2014
• 单位清华大学