加肋锥-环-柱结合壳连接分段极限承载能力分析
|
摘要
为研究初始几何缺陷对加肋凸型锥-环-柱结合壳连接分段极限承载能力的影响,参考现行规范对初始几何缺陷的要求,设计了初始几何缺陷的不同组合作为计算方案。建立了含不同初始几何缺陷形态的锥-环-柱结合壳连接分段模型,采用弧长法,分析连接分段的极限承载能力及破坏形式,并探讨了几何修正系数Cg的计算方法。结果表明:不同形态的初始几何缺陷对连接分段极限承载能力的影响有所区别;含加肋凸型锥-环-柱结合壳连接分段的极限承载能力几何修正系数可参考本文结论。
To study the impact of original geometrical imperfection on the sectional ultimate bearing of ring-stiffened convex cone-toroid-cylinder combined shell,referring to the requirements of existing criterion to initial geometrical imperfection,several differently combined imperfections were designed. The sectional model of convex cone-toroidcylinder combined shell was built,and the impact of imperfection on a cabin's bearing limit load and failure mode was studied via arc length method. Besides,the way of computing geometric correction factor Cgwas also discussed.The conclusion is as follows: various forms of initial geometrical imperfections affect the ultimate bearing capability of the cabin differently,and the conclusion of this paper provides a reference to the computation of Cgof the cabin with ring-stiffened convex cone-toroid-cylinder combined shell.
To study the impact of original geometrical imperfection on the sectional ultimate bearing of ring-stiffened convex cone-toroid-cylinder combined shell,referring to the requirements of existing criterion to initial geometrical imperfection,several differently combined imperfections were designed. The sectional model of convex cone-toroidcylinder combined shell was built,and the impact of imperfection on a cabin's bearing limit load and failure mode was studied via arc length method. Besides,the way of computing geometric correction factor Cgwas also discussed.The conclusion is as follows: various forms of initial geometrical imperfections affect the ultimate bearing capability of the cabin differently,and the conclusion of this paper provides a reference to the computation of Cgof the cabin with ring-stiffened convex cone-toroid-cylinder combined shell.
引文
[1]黄加强,郭日修.加肋锥-环-柱组合壳强度及稳定性模型实验研究[J]..中国造船,1998(4):57-65.HUANG Jiaqiang,GUO Rixiu.Model experimental research on stresses and stability of ring-stiffened cone-toroid-cylinder combined shell[J].Shipbuilding of China,1988(4):57-65.
[2]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,2006,10(2):65-72.BAI Xuefei,CHEN Xin,DING Jinchao,et al.Experimental research of the strength of ring-stiffened concave cone-toroidcylinder combined shell[J].Journal of ship mechanics,2006,10(2):65-72.
[3]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,2008,12(2):252-257.GUO Rixiu,LYU Yansong,HUANG Jiaqiang,et al.Experimental research on the ring-stiffened cone-toroid-cylinder combination shell[J].Journal of ship mechanics,2008,12(2):252-257.
[4]郭日修,吕岩松.凹型加肋锥-环-柱结合壳局部加强方式的研究[J].哈尔滨工程大学学报,2010,31(2):170-176.GUO Rixiu,LYU Yansong.Research on local strengthening modes for ring-stiffened concave cone-toroid-cylinder combination shell[J].Journal of Harbin engineering university,2010,31(2):170-176.
[5]吕岩松,郭日修.含凸、凹型加肋锥-环-柱结合壳的连接结构试验研究[J].哈尔滨工程大学学报,2011,32(9):1140-1143.LYU Yansong,GUO Rixiu.Experimental research on ringstiffened convex and concave cone-toroid-cylinder combination shell[J].Journal of Harbin engineering university,2011,32(9):1140-1143.
[6]吕岩松.加肋锥-环-柱结合壳应力峰值的计算方法[J].舰船科学技术,2014,36(4):63-65.LYU Yansong.Calculation of peak stress of ring-stiffened cone-toroid-cylinder combined shell[J].Ship science and technology,2014,36(4):63-65.
[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,2015,44(1):19-22,28.XIAO Wenyong,HUANG Ni.A structural parametric analysis on the strength of the cone-toroid-cylinder combined shell[J].Ship&ocean engineering,2015,44(1):19-22,28.
[8]ATHIANNAN K,PALANINATHAN R.Experimental investigations on buckling of cylindrical shells under axial compression and transverse shear[J].Sadhana,2004,29(1):93-115.
[9]PALANINATHAN R,ATHIANNAN K,THOMAS G.Investigations on stability of cylindrical shells under axial compression[C]//Proceedings of Transactions,SMiRt 16.Washington DC,2001:1-8.
[10]SINGER J.The status of experimental buckling investigations of shells[M]//RAMM E.Buckling of Shells.Berlin:Springer-Verlag,1982:501-533.
[11]ARBOCZ J.The imperfection data bank,a mean to obtain realistic buckling loads[M]//RAMM E.Buckling of Shells.Berlin:Springer-Verlag,1982:535-567.
[12]ZHU Enchun,KHAKINA P N,ZHOU Huazhang.Buckling load of thin spherical shells and single-layer reticulated spherical shells[J].Information engineering letters,2012,2(3):35-42.
[13]张二,吴梵,吕岩松.局部初始几何缺陷对凸型锥-环-柱结合壳应力影响的分析[J].中国造船,2015,56(2):11-21.ZHANG Er,WU Fan,LYU Yansong.Effect of local original geometrical imperfection on stress of ring-stiffened convex shell integrated with cone-toroid and cylinder[J].Shipbuilding of China,2015,56(2):11-21.
[14]张二,吴梵,吕岩松,等.含局部初始几何缺陷的凸型锥-环-柱结合壳舱段稳定性仿真分析[J].海军工程大学学报,2015,27(4):70-74.ZHANG Er,WU Fan,LYU Yansong,et al.Simulation analysis of stability of cabin of convex cone-toroid-cylinder combined shell with local initial imperfection[J].Journal of naval university of engineering,2015,27(4):70-74.
[15]GJB/Z 21A-2001.潜艇结构设计计算方法[S].北京:国防工业技术委员会,2001.
[2]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,2006,10(2):65-72.BAI Xuefei,CHEN Xin,DING Jinchao,et al.Experimental research of the strength of ring-stiffened concave cone-toroidcylinder combined shell[J].Journal of ship mechanics,2006,10(2):65-72.
[3]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,2008,12(2):252-257.GUO Rixiu,LYU Yansong,HUANG Jiaqiang,et al.Experimental research on the ring-stiffened cone-toroid-cylinder combination shell[J].Journal of ship mechanics,2008,12(2):252-257.
[4]郭日修,吕岩松.凹型加肋锥-环-柱结合壳局部加强方式的研究[J].哈尔滨工程大学学报,2010,31(2):170-176.GUO Rixiu,LYU Yansong.Research on local strengthening modes for ring-stiffened concave cone-toroid-cylinder combination shell[J].Journal of Harbin engineering university,2010,31(2):170-176.
[5]吕岩松,郭日修.含凸、凹型加肋锥-环-柱结合壳的连接结构试验研究[J].哈尔滨工程大学学报,2011,32(9):1140-1143.LYU Yansong,GUO Rixiu.Experimental research on ringstiffened convex and concave cone-toroid-cylinder combination shell[J].Journal of Harbin engineering university,2011,32(9):1140-1143.
[6]吕岩松.加肋锥-环-柱结合壳应力峰值的计算方法[J].舰船科学技术,2014,36(4):63-65.LYU Yansong.Calculation of peak stress of ring-stiffened cone-toroid-cylinder combined shell[J].Ship science and technology,2014,36(4):63-65.
[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,2015,44(1):19-22,28.XIAO Wenyong,HUANG Ni.A structural parametric analysis on the strength of the cone-toroid-cylinder combined shell[J].Ship&ocean engineering,2015,44(1):19-22,28.
[8]ATHIANNAN K,PALANINATHAN R.Experimental investigations on buckling of cylindrical shells under axial compression and transverse shear[J].Sadhana,2004,29(1):93-115.
[9]PALANINATHAN R,ATHIANNAN K,THOMAS G.Investigations on stability of cylindrical shells under axial compression[C]//Proceedings of Transactions,SMiRt 16.Washington DC,2001:1-8.
[10]SINGER J.The status of experimental buckling investigations of shells[M]//RAMM E.Buckling of Shells.Berlin:Springer-Verlag,1982:501-533.
[11]ARBOCZ J.The imperfection data bank,a mean to obtain realistic buckling loads[M]//RAMM E.Buckling of Shells.Berlin:Springer-Verlag,1982:535-567.
[12]ZHU Enchun,KHAKINA P N,ZHOU Huazhang.Buckling load of thin spherical shells and single-layer reticulated spherical shells[J].Information engineering letters,2012,2(3):35-42.
[13]张二,吴梵,吕岩松.局部初始几何缺陷对凸型锥-环-柱结合壳应力影响的分析[J].中国造船,2015,56(2):11-21.ZHANG Er,WU Fan,LYU Yansong.Effect of local original geometrical imperfection on stress of ring-stiffened convex shell integrated with cone-toroid and cylinder[J].Shipbuilding of China,2015,56(2):11-21.
[14]张二,吴梵,吕岩松,等.含局部初始几何缺陷的凸型锥-环-柱结合壳舱段稳定性仿真分析[J].海军工程大学学报,2015,27(4):70-74.ZHANG Er,WU Fan,LYU Yansong,et al.Simulation analysis of stability of cabin of convex cone-toroid-cylinder combined shell with local initial imperfection[J].Journal of naval university of engineering,2015,27(4):70-74.
[15]GJB/Z 21A-2001.潜艇结构设计计算方法[S].北京:国防工业技术委员会,2001.