现代应用物理
現代應用物理
현대응용물리
Modern Applie Physics
2014年
1期
59-62
,共4页
王特捷%付应乾%俞鑫炉%周刚毅%董新龙
王特捷%付應乾%俞鑫爐%週剛毅%董新龍
왕특첩%부응건%유흠로%주강의%동신룡
固体力学%帽型梁%落锤%冲击能量吸收%有限元方法
固體力學%帽型樑%落錘%遲擊能量吸收%有限元方法
고체역학%모형량%락추%충격능량흡수%유한원방법
solid mechanics%hat-beam structure%hammer%energy absorption%finite ele-ment method
对长300 mm的帽型梁试件在落锤轴向冲击下的变形及能量吸收特性进行了实验及有限元分析。比较了不同厚度试件的力位移响应及屈曲过程，分析了其能量吸收特性。研究结果表明：随厚度减少，试件会发生弯曲失稳，厚度为1．0 mm的试件较厚度为1．2 mm和0．8 mm的试件具有更好的能量吸收效率。有限元模拟结果与实验结果吻合较好。
對長300 mm的帽型樑試件在落錘軸嚮遲擊下的變形及能量吸收特性進行瞭實驗及有限元分析。比較瞭不同厚度試件的力位移響應及屈麯過程，分析瞭其能量吸收特性。研究結果錶明：隨厚度減少，試件會髮生彎麯失穩，厚度為1．0 mm的試件較厚度為1．2 mm和0．8 mm的試件具有更好的能量吸收效率。有限元模擬結果與實驗結果吻閤較好。
대장300 mm적모형량시건재락추축향충격하적변형급능량흡수특성진행료실험급유한원분석。비교료불동후도시건적력위이향응급굴곡과정，분석료기능량흡수특성。연구결과표명：수후도감소，시건회발생만곡실은，후도위1．0 mm적시건교후도위1．2 mm화0．8 mm적시건구유경호적능량흡수효솔。유한원모의결과여실험결과문합교호。
Experiments were carried out on a hat-beam structure with a length of 300 mm to investigate its deformation and energy absorption characteristics under axial crash of a drop-ping hammer.The force-displacement curves got from the tests on the samples with different thickness were comparedand their buckling behaviors and energy absorption characteristics were analyzed based on the finite element simulation with LS-DYNA.The results indicate that the thinner samples would likely bendand the samples with the thickness of 1 .0 mm have better energy absorption efficiency than the ones with the thickness of 1.2 and 0.8 mm. The simulation results agree well with the experimental results.
