宽带随机载荷谱下结构疲劳寿命的计算 |
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引用本文: | 吕彭民. 宽带随机载荷谱下结构疲劳寿命的计算[J]. 长安大学学报(自然科学版), 2004, 24(1): 76-78 |
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作者姓名: | 吕彭民 |
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作者单位: | 长安大学,工程机械学院,陕西,西安,710064 |
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摘 要: | 以目前国际上普遍认可的一种雨流循环计数应力范围概率密度函数为依据,采用结构危险部位疲劳寿命曲线,利用不完全Gamma函数,建立了一种宽带随机载荷谱下结构疲劳寿命计算的一种解析解法,为在宽带随机载荷谱下服役的结构在设计阶段用频域法进行疲劳寿命计算提供了一种快捷方法。
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关 键 词: | 宽带随机载荷谱 结构 疲劳寿命计算 解析解 |
文章编号: | 1671-8879(2004)01-0076-03 |
修稿时间: | 2003-05-13 |
Calculation of structural fatigue life under broad band random loading spectrum |
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Abstract: | Based on the probability density function of stress range obtained by rain-flow range cycle counting technique, and by the virtue of fatigue life curve in the critical position of structures and incomplete Gamma function, an analytical solution to structural fatigue life under broad band random loading spectrum was established by frequency domain parameters,in which a fast calculating structural fatigue life method was presented at the stage of structural design. |
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Keywords: | broad band random loading spectrum strurcture fatigue life analytical solution |
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