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A modified nonlinear fatigue damage accumulation model based on the Manson-Halford theory was presented,and the new model was developed for fatigue life prediction under constant and variable amplitude loading, which took the effects of the load interactions and the phenomenon of material's strength degradation into account. The experimental data of the 30 Cr Mn Si A and the LY-12 cz from literature were used to verify the proposed model. And from the good agreement between the experimental data and predicted results,we can see it clear that the proposed method can be applied to predicting fatigue life under different loadings. 相似文献
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The explosive logic network( ELN) with two-input-oneoutput was designed with three explosive logic gap null gates. The time window of the output of the ELN was given,after which the dynamic fault tree analysis was implemented. Two dynamic failure modes of the ELN were obtained,and then their own Markov transition processes were established. After that,the probability of failure was calculated from the corresponding state transition diagram. The reliability of the ELN which was in different length of time under the ambient incentive was then analyzed. Based on the above processing,the reliability of the ELN can be improved. 相似文献
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根据国家对药品安全管理的要求,提出一种将信息物理融合技术引入药品监管的方法.药品监管一般包括药械物流动态追踪、应急管理和药品温湿度管理与控制等功能,根据药品监管的工作流程,结合药品本身的特殊性,构建了具有相关功能的药品监管信息物理融合系统模型,通过分析该系统体系架构,对其主要功能进行了实现.该系统的实现可以有效提高药品监管的安全性,促进药品监管向信息化方向的发展. 相似文献
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