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Proving the Integrity of the Weighted Sum Squared Error (WSSE) Loran Cycle Confidence Algorithm
Proving Integrity Squared Error (WSSE) Loran Cycle Confidence Algorithm
2015/6/25
For Loran to provide redundancy to GPS for aviation,Loran must meet aviation integrity requirements. The integrity under nominal conditions derives from being able to bound the horizontal position err...
基于试验场实测应变的车辆下摆臂疲劳寿命分析(Fatigue Life Analysis of Vehicles Lower Suspension Arm Based on Strain Signal Measured in Proving Ground)
车辆 下摆臂 准静态法
2009/8/11
在海南汽车试验场强化路面环境下对某轿车下摆臂应变模拟控制点的应变进行测定,得到其应变时间历程,并进行了频谱分析。讨论了在动态环境下准静态方法的使用条件。结合有限元静力分析结果通过准静态法获得危险点的应力时间历程,利用名义应力法对下摆臂疲劳寿命进行了计算和分析。在此基础上,研究了应变模拟控制点的选取、平均应力修正算法对计算结果的影响,所得结论有助于应变模拟控制点的合理选取,并对提高疲劳寿命估算的准确...