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正态分布双侧可靠性精确下限与Odeh&Owen近似下限 被引量:1
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作者 李宝盛 《质量与可靠性》 2007年第6期4-5,共2页
正态分布双侧可靠性下限,在产品的性能可靠性分析中,要经常用到。工程中,一般都是使用Odeh&Owen的近似下限方法。正态分布双侧可靠性精确下限的计算,曾被[1]提出过,但长久以来尚未引起重视,本文再次讨论精确下限及近似下限,并用数... 正态分布双侧可靠性下限,在产品的性能可靠性分析中,要经常用到。工程中,一般都是使用Odeh&Owen的近似下限方法。正态分布双侧可靠性精确下限的计算,曾被[1]提出过,但长久以来尚未引起重视,本文再次讨论精确下限及近似下限,并用数值例将精确下限与Odeh&Owen的近似下限作了比较,结果说明,近似下限偏于保守,而且误差不小,因此对于重要的工程问题,建议使用精确下限。 展开更多
关键词 正态分布 双侧可靠性 精确下限 Odeh&Owen近似下限
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Structural Reliability of Broadside of a Bulk Carrier
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作者 黄衍顺 涂跃红 王琳 《Transactions of Tianjin University》 EI CAS 2005年第6期417-421,共5页
The ultimate bending moment and maximal shear stress of a bulk carrier with two structural forms (single hull and double hull/ are calculated separately by using the combined moment which is determined by stochastic ... The ultimate bending moment and maximal shear stress of a bulk carrier with two structural forms (single hull and double hull/ are calculated separately by using the combined moment which is determined by stochastic process. Then the assessment of reliability is carried out. The results indicate that by introducing the double-hull structure, the shear stress of side can be decreased to half of that of the primary structure( 50.7% i. but the effect on longitudinal strength is not obvious. Finally, the effects of different double-side skin widths on ultimate bending moment and the maximal shear stress are investigated, followed by proposals of the selection of the double-side skin width. 展开更多
关键词 bulk carriers single hull double hull RELIABILITY
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