| 基于裂纹缺陷的水下耐压壳体结构强度与稳定性研究 |
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| 引用本文： | 李木易,陈飞宇,卢丙举,赵世平. 基于裂纹缺陷的水下耐压壳体结构强度与稳定性研究[J]. 舰船科学技术, 2021, 0(2) |
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| 作者姓名： | 李木易 陈飞宇 卢丙举 赵世平 |
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| 作者单位： | 海军装备部重大专项装备项目管理中心;河南省水下智能装备重点实验室 |
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| 摘 要： | 本文针对初始裂纹缺陷下的水下耐压壳体结构强度与稳定性失效问题。首先建立CT裂纹扩展试件的仿真模型,通过与试验结果比对验证裂纹仿真模型的有效性。随后建立无缺陷状态下的水下耐压结构有限元模型,对其强度与稳定性进行校核。在此基础上引入裂纹缺陷,建立非线性耐压结构强度与稳定性分析模型,研究不同裂纹缺陷参数对于结构强度与稳定性的影响规律,为结构裂纹扩展与寿命问题的研究提供技术支撑。
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| 关 键 词： | 裂纹缺陷 强度与稳定性 裂纹缺陷参数 裂纹扩展 |
Research on strength and stability of underwater structure with initial crack defect |
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| LI Mu-yi,CHEN Fei-yu,LU Bing-ju,ZHAO Shi-ping. Research on strength and stability of underwater structure with initial crack defect[J]. Ship Science and Technology, 2021, 0(2) |
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| Authors: | LI Mu-yi CHEN Fei-yu LU Bing-ju ZHAO Shi-ping |
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| Affiliation: | (Major Special Equipment Project Management Center of Department of the Naval Equipment,Beijing 100071,China;Henan Key laboratory of Underwater Intelligent Equipment,Zhengzhou 450015,China) |
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| Abstract: | In this paper,the strength and stability of underwater structure with initial crack defect was discussed.The simulation model of CT test crack growth was established firstly,by comparing with test results to verify the validity of the simulation model.Secondly,the finite element simulation model of the structure without defects was established to analyze the strength and stability of underwater structure.On above of the research,the strength and stability analysis model of nonlinear underwater structure was established by adding crack factors,and the influence law of different crack parameters on structural strength and stability were studied,a reasonable method for crack growth and fatigue life of structure was presented in this report. |
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| Keywords: | crack defect strength and stability crack parameters crack growth |
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