加肋凹型锥环柱破坏机理研究
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摘要
采用Ansys有限元软件分析静水压力作用下加肋凹型锥环柱结合壳的受力特点;运用弧长法对其破坏过程进行仿真分析。通过分析锥、环、柱三部分各自位移最大点及环壳两端肋骨的载荷-应力和载荷-位移关系。对加肋凹型锥环柱结合壳的破坏模式和破坏机理进行研究,并对破坏过程中出现环壳中面应力在破坏前卸载和环壳两端肋骨的高应力的现象做出合理的解释。
An analysis by using Ansys is performed to study the stress characteristic of the Ring-stiffened concave cone-toroid-cylinder combined shell under static water pressure. Simulated analysis of its failure process is proceeded through arc length method. Research on failure mode and failure mechanics of Ring-stiffened Concave Cone-toroid-cylinder Combined Shell is studied by analysis of the load-displacement curve and load-stress curve of the nodes with maximum displacement, which are from cone, toroid, cylinder and the ribs next to toroid. Reasonable explanation for these phenomenons in the failure process are made that the mid-plane stress of toroid falls back before the destruction and the stress of ribs next to toroid is high.
An analysis by using Ansys is performed to study the stress characteristic of the Ring-stiffened concave cone-toroid-cylinder combined shell under static water pressure. Simulated analysis of its failure process is proceeded through arc length method. Research on failure mode and failure mechanics of Ring-stiffened Concave Cone-toroid-cylinder Combined Shell is studied by analysis of the load-displacement curve and load-stress curve of the nodes with maximum displacement, which are from cone, toroid, cylinder and the ribs next to toroid. Reasonable explanation for these phenomenons in the failure process are made that the mid-plane stress of toroid falls back before the destruction and the stress of ribs next to toroid is high.
引文
[1]郭日修,吕岩松,黄加强,等.加肋锥-环-柱结合壳试验研究[J].船舶力学,2008,2(12):252-257.GUO Ri-xiu,LV Yan-song,HUANG Jia-qiang,et al.Experi mental research on the ring-stiffened cone-toroid-cylinder com bination shell[J].Journal of Ship Mechanics,2008,2(12)252-257.
[2]王安稳,郭日修.锥-环-柱结合壳的应力和稳定性[J].中国造船,1995,(3):54-61.WAN An-wen,GUO Ri-xiu.Stress and stability for cone-tor oid-cylinder combination[J].Shipbuilding of China,1995,(3)54-61.
[3]黄加强,郭日修.分区样条等参元方法分析加肋轴对称组合壳[J].计算力学学报,1995,15(1):59-68HUANG Jia-qiang,GUO Ri-xiu.Sub-region isoparametric spline element analysis of strengthand stability of ring-stiffened combined of revolution[J].Chinese journal of Computationa Mechanics,1995,15(1):59-68
[4]白雪飞,陈昕,丁锦超,等.凹型加肋锥-环-柱结合壳强度的模型试验研究[J].船舶力学,2006,2(10):65-72.BAI Xue-fei,CHEN Xin,DING Jin-chao,et al.Experimenta research of the strength of ring-stiffened concave cone-toroid cylinder combined shell[J].Journal of Ship Mechanics,20062(10):65-72.
[5]白雪飞,陈昕,丁锦超,等.加肋轴对称组合壳稳定性的一个特殊问题-肋间壳板“诱导”失稳[J].船舶力学,2007,11(5)768-772.BAI Xue-fei,CHEN Xin,DING Jin-chao,et al.A special prob lem of the stability of ring-stiffenedcombined shell of revolu tion-interframe“induced”buckling[J].Journal of Ship Mech anics,2007,11(5):768-772.
[6]吴梵,陈昕,郭日修.加肋凹锥-环-柱结合壳结构参数分析[J]海军工程大学学报,2004,6(16):64-69.WU Fan,CHEN Xin,GUO Ri-xiu.Analysis of structural para meters of ring stiffened concave cone-toroid-cylinder combined shell[J].Journal of Naval University of Engineering,20046(16):64-69.
[7]肖文勇,黄旎.不同结构参数的锥环柱结构强度性能分析[J]船海工程,2015(1):19-22,28.XIAO Wen-yong,HUANG Ni.A structural parametric study on the the strength of the cone-toroid-cylindercombined shell[J]Ship&Ocean Engineering,2015(1):19-22,28.
[8]郭日修,吕岩松.凹型加肋锥-环-柱结合壳局部加强方式研究[J].哈尔滨工程大学学报,2010,2(31):170-176.GUO Ri-xiu,LV Yan-song.Research on local strengthening modes for ring-stiffened concave cone-toroid-cylinder combina tion shells[J].Journal of Harbin Engineering University,20102(31):170-176.
[2]王安稳,郭日修.锥-环-柱结合壳的应力和稳定性[J].中国造船,1995,(3):54-61.WAN An-wen,GUO Ri-xiu.Stress and stability for cone-tor oid-cylinder combination[J].Shipbuilding of China,1995,(3)54-61.
[3]黄加强,郭日修.分区样条等参元方法分析加肋轴对称组合壳[J].计算力学学报,1995,15(1):59-68HUANG Jia-qiang,GUO Ri-xiu.Sub-region isoparametric spline element analysis of strengthand stability of ring-stiffened combined of revolution[J].Chinese journal of Computationa Mechanics,1995,15(1):59-68
[4]白雪飞,陈昕,丁锦超,等.凹型加肋锥-环-柱结合壳强度的模型试验研究[J].船舶力学,2006,2(10):65-72.BAI Xue-fei,CHEN Xin,DING Jin-chao,et al.Experimenta research of the strength of ring-stiffened concave cone-toroid cylinder combined shell[J].Journal of Ship Mechanics,20062(10):65-72.
[5]白雪飞,陈昕,丁锦超,等.加肋轴对称组合壳稳定性的一个特殊问题-肋间壳板“诱导”失稳[J].船舶力学,2007,11(5)768-772.BAI Xue-fei,CHEN Xin,DING Jin-chao,et al.A special prob lem of the stability of ring-stiffenedcombined shell of revolu tion-interframe“induced”buckling[J].Journal of Ship Mech anics,2007,11(5):768-772.
[6]吴梵,陈昕,郭日修.加肋凹锥-环-柱结合壳结构参数分析[J]海军工程大学学报,2004,6(16):64-69.WU Fan,CHEN Xin,GUO Ri-xiu.Analysis of structural para meters of ring stiffened concave cone-toroid-cylinder combined shell[J].Journal of Naval University of Engineering,20046(16):64-69.
[7]肖文勇,黄旎.不同结构参数的锥环柱结构强度性能分析[J]船海工程,2015(1):19-22,28.XIAO Wen-yong,HUANG Ni.A structural parametric study on the the strength of the cone-toroid-cylindercombined shell[J]Ship&Ocean Engineering,2015(1):19-22,28.
[8]郭日修,吕岩松.凹型加肋锥-环-柱结合壳局部加强方式研究[J].哈尔滨工程大学学报,2010,2(31):170-176.GUO Ri-xiu,LV Yan-song.Research on local strengthening modes for ring-stiffened concave cone-toroid-cylinder combina tion shells[J].Journal of Harbin Engineering University,20102(31):170-176.