Multiobjective optimization of axially varying thickness lateral corrugated tubes for energy absorption

Abstract

A new type of axially varying thickness lateral corrugated tube (AVTLCT) is proposed and optimized, and the energy absorption and multi-objective optimization of the two AVTLCTs with the number of corrugations (N) of 6 and 10 are analyzed. Research shows that for the AVTLCT with N = 6, the value ranges of A and k for the Pareto front are more evenly distributed, which implies that the AVTLCT with N = 6 has better scalability than the AVTLCT with N = 10. Compared with the original design, the optimized solution has a maximum increase of 55.36% in SEA and a maximum reduction of 69.88% in F_max.

Keywords:

• Axially varying thickness
• crashworthiness
• energy absorption
• lateral corrugated tubes
• multiobjective optimization

Disclosure statement

We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work. There is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled, “Multiobjective optimization of axially varying thickness lateral corrugated tubes for energy absorption.”

Funding

This work is supported by National Natural Science Foundation of China (No. 52065059) and Guangxi Science and Technology Base and Talent Special Project (No. 2020AC19011).