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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  Fmax .

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