| 深海钛合金压力容器在静水压力作用下的弹塑性分析 |
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| 引用本文： | 罗冬梅,汪文学,高雄善裕.深海钛合金压力容器在静水压力作用下的弹塑性分析[J].船舶力学,2009,13(4). |
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| 作者姓名： | 罗冬梅 汪文学 高雄善裕 |
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| 作者单位： | 1. 佛山科学技术学院环境与土木建筑学院,广东佛山,528000
2. 九州大学应用力学研究所,日本,春日公园 |
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| 摘 要： | 利用MSC.Marc Mentat 2005通用有限元软件对深海探测用压力容器受静水压力作用时的弹塑性失稳问题进行了计算与分析,弹性失稳数值计算的结果与用现有规范计算公式所得结果一致,均大于塑性失稳数值分析时的临界载荷。由此得出结论,对于厚壁且形状复杂的压力容器的失稳计算,用理论公式或仅用厚壳单元的弹性失稳分析是不够的,应该用3维立体单元的弹塑性失稳计算才能给出比较精确的强度预测。MSC.Marc Mentat2005强大的计算和仿真功能有效地模拟了深海精密探测容器受静水压力作用时的弹塑性失稳问题,为深海精密探测容器在材料、外观等方面做进一步的设计改进提供了可靠的工具。
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| 关 键 词： | 深海压力容器 弹塑性失稳 数值分析 MSC.Marc Mentat 2005 |
Elastic-plastic analysis for the deep-sea Ti-alloy pressure vessel subjected to external hydrostatic pressure |
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| LUO Dong-mei,WANG Wen-xue,Yoshihiro TAKAO.Elastic-plastic analysis for the deep-sea Ti-alloy pressure vessel subjected to external hydrostatic pressure[J].Journal of Ship Mechanics,2009,13(4). |
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| Authors: | LUO Dong-mei WANG Wen-xue Yoshihiro TAKAO |
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| Affiliation: | 1 Environment and Civil Engineering School;Foshan University;Foshan 528000;China;2 Research Institute for Applied Mechanics;Kyushu University;Kazuka;816-8580;Japan |
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| Abstract: | By using the general FEM software of MSC.Marc Mentat 2005,the elastic-plastic buckling analysis of deep-sea submarine pressure vessel was conducted.The critical load obtained from elastic buckling analysis is consisted with those from classical theories,and they are much larger than those from plastic buckling analysis.It shows that structural plastic buckling due to the high external hydrostatic pressure is dominant risk factor for deep-sea pressure vessel,and plastic buckling with three-dimensional 8-node... |
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| Keywords: | deep-sea pressure vessel elastic-plastic buckling numerical analysis MSC Marc Mentat 2005 |
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