含有裂纹缺陷加筋板结构系统的可靠性分析

安海;安伟光;赵维涛

兵工学报 ›› 2011, Vol. 32 ›› Issue (3) : 348-354.

兵工学报 ›› 2011, Vol. 32 ›› Issue (3) : 348-354. DOI: 10.3969/j.issn.1000-1093.2011.03.017
实验技术与分析

含有裂纹缺陷加筋板结构系统的可靠性分析

  • 安海1, 安伟光1, 赵维涛2
作者信息 +

Reliability Analysis on Stiffened Panel Structure with Crack Defects

  • AN Hai1, AN Wei-guang1, ZHAO Wei-tao2
Author information +
文章历史 +

摘要

分析了裂纹缺陷对加筋板极限强度的影响,给出了加筋板单元的可靠性计算和敏度分分析了裂纹缺陷对加筋板极限强度的影响,给出了加筋板单元的可靠性计算和敏度分析的表达式。对含有裂纹的加筋板单元组成的结构系统进行了可靠性分析,给出结构系统总体可靠性指标的计算方法及系统可靠性指标的敏度表达式;推出了含裂纹板元失效后对残余结构影响的反向节点力计算公式,保证了计算精度和可靠性分析的合理性;最后通过船舶结构的一个舱段,对比开展了含有裂纹缺陷与不含裂纹缺陷的结构系统的可靠性分析。本文方法可为结构系统的安全设计和维修提供参考。

Abstract

The influence of crack flaw on ultimate strength of stiffened panel is analyzed, and the reliability calculation and sensitivity analysis expressions of stiffened panel element are given also. The reliability analysis calculation method of integrity reliability index and reliability index sensitivity expressions of structure system which consists of the stiffened panel elements with crack defect are presented. The calculation formula of reverse node forces applied on residual structure after failure of stiffened panel element with crack flaw is deduced. It guarantees the calculation precision and reasonableness of reliability analysis. Finally, taken a cabin section of ship structure as an example, the reliability of structure with and without crack flaw are both analyzed comparatively. The method provides a reference for the safety design and maintenance of the structure system.

关键词

固体力学 / 裂纹缺陷 / 加筋板 / 反向节点力 / 敏度表达式 / 可靠性分析

Key words

solid mechanics / crack defect / stiffened panel / reverse node forces / sensitivity expression / reliability analysis

引用本文

导出引用
安海, 安伟光, 赵维涛. 含有裂纹缺陷加筋板结构系统的可靠性分析. 兵工学报. 2011, 32(3): 348-354 https://doi.org/10.3969/j.issn.1000-1093.2011.03.017
AN Hai, AN Wei-guang, ZHAO Wei-tao. Reliability Analysis on Stiffened Panel Structure with Crack Defects. Acta Armamentarii. 2011, 32(3): 348-354 https://doi.org/10.3969/j.issn.1000-1093.2011.03.017

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