CAJ | 학술논문

基于正八边形多胞薄壁管相比其他截面形状薄壁管具有结构紧凑、比吸能高等特点，采用有限元软件Abaqus研究了其在准静态轴向压缩下的吸能特性，分析了不同截面形状和结构参数对吸能特性的影响.根据吸能特性指标，运用非支配遗传算法对正八边形多胞管边对边(S2 S)结构进行了优化.结果表明，正八边形多胞管的边对边布置形式的吸能效果优于角对角布置形式，其S2 S结构吸能特性最优.结构参数对其吸能特性影响明显，经优化后的S2S结构比吸能提高了33.11%，最大压溃力降低了3.78%，具有较好的吸能特性.
기우정팔변형다포박벽관상비기타절면형상박벽관구유결구긴주、비흡능고등특점，채용유한원연건Abaqus연구료기재준정태축향압축하적흡능특성，분석료불동절면형상화결구삼수대흡능특성적영향.근거흡능특성지표，운용비지배유전산법대정팔변형다포관변대변(S2 S)결구진행료우화.결과표명，정팔변형다포관적변대변포치형식적흡능효과우우각대각포치형식，기S2 S결구흡능특성최우.결구삼수대기흡능특성영향명현，경우화후적S2S결구비흡능제고료33.11%，최대압궤력강저료3.78%，구유교호적흡능특성.
Compared with other cross section shapes of thin-walled tubes,octagon multi-cell thin-walled tubes have the characteristics of compact structure and high specific energy absorption.The energy absorption characteristics of octagon multi-cell thin-walled tubes under quasi-static axial loading were sim-ulated with finite element software Abaqus.The effects of the cross sections shape and structural parame-ters on energy absorption characteristics of the multi-cell tubes were analyzed.According to the indicator of the energy absorption characteristics,a side to side distribution of the octagon multi-cell tubes (S2S) was optimized by using the non-dominated sorting genetic algorithm.The results show that the energy ab-sorption characteristics of the side to side distribution is better than the corner to corner distribution,and the octagon multi-cell S2S tubes is optimal;and structural parameters significantly influence its energy ab-sorption characteristics;the octagon multi-cell S2S tubes optimized has better energy absorption character-istics,the specific energy absorption is increased by 33.11%,and the peak crushing force is reduced by 3. 78%.