| 舰船加筋板局部强度评估中的总纵应力折减系数研究 |
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| 引用本文： | 朱青淳,曲雪,王昕韡,陈忱. 舰船加筋板局部强度评估中的总纵应力折减系数研究[J]. 舰船科学技术, 2021, 0(2) |
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| 作者姓名： | 朱青淳 曲雪 王昕韡 陈忱 |
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| 作者单位： | 中国船舶及海洋工程设计研究院 |
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| 摘 要： | 舰船加强筋尺寸的合理确定一直是结构设计中的热点问题。本文综合考虑总纵弯曲应力和局部载荷的相互作用,研究加强筋的许用应力折减系数(Cs)的影响因素与合理取值方法。通过分析加强筋的力学模型、对比不同规范中的Cs取值,以及用非线性有限元软件Abaqus计算一系列加筋板模型,拟合Cs曲线并与规范对比,并验证剖面对称性和局部载荷作用方向对Cs取值的影响方式,丰富了舰船局部强度校核方法的技术背景,为板架设计、舰船三维局部校核程序开发提供借鉴。
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| 关 键 词： | 规范校核 局部强度 许用应力折减系数 |
Research on permissible bending stress coefficient in local strength evaluation of warship's stiffened plate |
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| ZHU Qing-chun,QU Xue,WANG Xin-wei,CHEN Chen. Research on permissible bending stress coefficient in local strength evaluation of warship's stiffened plate[J]. Ship Science and Technology, 2021, 0(2) |
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| Authors: | ZHU Qing-chun QU Xue WANG Xin-wei CHEN Chen |
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| Affiliation: | (Marine Design and Research Institute of China,Shanghai 200011,China) |
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| Abstract: | The reasonable design of warship's stiffened plate has long been a hot spot issue.Considering the interaction between the general longitudinal bending stress and the local load,this paper studies the influencing factors of the permissible bending stress coefficient(Cs)of the stiffener and the method to get value of Cs.By analyzing the mechanical model of stiffeners,comparing the values of Csin different rules,and calculating a series of stiffened plate models with the nonlinear finite element software ABAQUS,the Cscurve is fitted and compared with rules,and the influence of the section symmetry and the direction of local load on the values of Csis verified,which enriches the technical background of the method of checking the local strength of ships,and provides a reference for the stiffened plate design while promoting the development of 3D local verification program as well. |
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| Keywords: | rule check local strength permissible bending stress coefficient |
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