加肋凹型锥-环-柱结合壳稳定性几何修正方法
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摘要
针对加肋凹型锥-环-柱结合壳这一新型连接结构,分析了初始几何缺陷的形态及其可能出现的位置,并运用有限元仿真技术,得到影响最大的初始几何缺陷形态组合以研究壳板稳定性几何修正方法.通过单因素数值试验,分析了各结构参数对几何修正系数Cg的影响.并提出了Cg的计算方法.结论如下:(1)距环壳临近一档圆锥壳的Cg与各结构参数的关系同普通圆锥壳的Cg有差异;(2)经算例检验,提出的Cg计算方法精度较高,可在工程计算中应用.
The ring-stiffened concave cone-toroid-cylinder combined shell is a new joint structure.The shape of geometric imperfection and location of the joint was analyzed and the typical imperfection which had the greatest impact was calculated by using finite element simulation to study the method of correcting shell's stability.Besides,the effect of structural parameters on geometric correction coefficient Cgwas analyzed by conducting single-factor numerical experiment.It is found that the Cgof cone which is next to the toroid has a different relationship with structural parameters compared with that of common cone.The method to calculate Cgis proved to be very precise,which justifies that it can be used in engineering calculation.
The ring-stiffened concave cone-toroid-cylinder combined shell is a new joint structure.The shape of geometric imperfection and location of the joint was analyzed and the typical imperfection which had the greatest impact was calculated by using finite element simulation to study the method of correcting shell's stability.Besides,the effect of structural parameters on geometric correction coefficient Cgwas analyzed by conducting single-factor numerical experiment.It is found that the Cgof cone which is next to the toroid has a different relationship with structural parameters compared with that of common cone.The method to calculate Cgis proved to be very precise,which justifies that it can be used in engineering calculation.
引文
[1]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,1998,15(1):58-68.HUANG Jia-qiang,GUO Ri-xiu.Sub-region isoparametric spline element analysis of strength and stability of ring-stiffened combined shell of revolution[J].Chinese Journal of Computational Mechanics,1998,15(1):58-68.
[2]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,1998,143(4):57-65.HUANG Jia-qiang,GUO Ri-xiu.Model experiment research on stress and stability of ring-stiffened conetoriod-cylinder combined shell[J].Ship Building of China,1988,143(4):57-65.
[3]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,2004,16(6):64-69.WU Fan,CHEN Xin,GUO Ri-xiu.Analysis of structural parameters of ring stiffened concave cone-toroidcylinder combined shell[J].Journal of Naval University of Engineering,2004,16(6):64-69.
[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,2006,10(2):65-72.BAI Xue-fei,CHEN Xin,DING Jin-Chao,et al.Experimental research of the strength of ring-stiffened concave cone-torid-cylinder combined shell[J].Journal of Ship Mechanics,2006,10(2):65-72.
[5]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 Ri-xiu,LYan-song.Research on local strengthening modes for ring-stiffened concave conetoriod-cylinder combination shell[J].Journal of Harbin Engineering University,2010,31(2):170-176.
[6]黄加强.加肋锥-环-柱结合壳初始几何缺陷形态分析[J].中国舰船研究,2015,10(3):51-56.HUANG Jia-qiang.Shape analysis of ring-stiffened cone-toroid-cylinder combined shell’s initial gcometrical imperfection[J].Chinese Journal of Ship Research,2015,10(3):51-56.
[7]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].哈尔滨工程大学学报,2015,56(2):11-21.ZHANG Er,WU Fan,LU Yan-song.Effect of Original Geometrical Imperfection on Stress of Ring-stiffened Convex Shell Integrated with Cone-toroid and cylinder[J].Shipbulding of China,2015,56(2):11-21.
[8]朱锡,吴梵.舰艇强度[M].北京:国防工业出版社,2005.
[9]许辑平.潜艇强度[M].北京:国防工业出版社,1980.
[2]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,1998,143(4):57-65.HUANG Jia-qiang,GUO Ri-xiu.Model experiment research on stress and stability of ring-stiffened conetoriod-cylinder combined shell[J].Ship Building of China,1988,143(4):57-65.
[3]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,2004,16(6):64-69.WU Fan,CHEN Xin,GUO Ri-xiu.Analysis of structural parameters of ring stiffened concave cone-toroidcylinder combined shell[J].Journal of Naval University of Engineering,2004,16(6):64-69.
[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,2006,10(2):65-72.BAI Xue-fei,CHEN Xin,DING Jin-Chao,et al.Experimental research of the strength of ring-stiffened concave cone-torid-cylinder combined shell[J].Journal of Ship Mechanics,2006,10(2):65-72.
[5]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 Ri-xiu,LYan-song.Research on local strengthening modes for ring-stiffened concave conetoriod-cylinder combination shell[J].Journal of Harbin Engineering University,2010,31(2):170-176.
[6]黄加强.加肋锥-环-柱结合壳初始几何缺陷形态分析[J].中国舰船研究,2015,10(3):51-56.HUANG Jia-qiang.Shape analysis of ring-stiffened cone-toroid-cylinder combined shell’s initial gcometrical imperfection[J].Chinese Journal of Ship Research,2015,10(3):51-56.
[7]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].哈尔滨工程大学学报,2015,56(2):11-21.ZHANG Er,WU Fan,LU Yan-song.Effect of Original Geometrical Imperfection on Stress of Ring-stiffened Convex Shell Integrated with Cone-toroid and cylinder[J].Shipbulding of China,2015,56(2):11-21.
[8]朱锡,吴梵.舰艇强度[M].北京:国防工业出版社,2005.
[9]许辑平.潜艇强度[M].北京:国防工业出版社,1980.