| 多种随机载荷下的结构动态可靠性计算 |
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| 引用本文： | 方永锋,陈建军,马洪波.多种随机载荷下的结构动态可靠性计算[J].振动与冲击,2013,32(1):118-121. |
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| 作者姓名： | 方永锋 陈建军 马洪波 |
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| 作者单位： | 西安电子科技大学机电工程学院 西安 710071 |
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| 基金项目： | 国家自然科学基金项目(50905134);中央高校基本科研资金项目(JY10000904012)资助 |
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| 摘 要： | 考虑随机载荷的加载形式分为动载荷累加，等幅且服从参数为 的泊松分布，和载荷随时间变化且不服从任何分布的三种情况，利用应力-强度干涉理论和随机过程理论分别建立了结构强度退化情况下的结构动态可靠性预测的三种计算公式。该公式形式简单、便于计算，且可获得结构的可靠度随时间变化的规律。最后通过算例说明文中计算公式的合理性，可行性，实用性。
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| 关 键 词： | 随机载荷 结构 动态可靠度 计算 |
| 收稿时间： | 2012-4-11 |
| 修稿时间： | 2012-5-25 |
Structural dynamic reliability calculation under three types of stochastic loads |
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| FANG Yong-feng,CHEN Jian-jun,MA Hong-bo.Structural dynamic reliability calculation under three types of stochastic loads[J].Journal of Vibration and Shock,2013,32(1):118-121. |
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| Authors: | FANG Yong-feng CHEN Jian-jun MA Hong-bo |
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| Affiliation: | School of Electronic & Mechanical Engineering. Xidian University, Xi ’an 710071, China |
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| Abstract: | Stochastic loads are classified three types: dynamic load accumulation, amplitude and obey the Poisson distribution whose parameter is , loads changing with time and not obey any distribution. As these conditions, their dynamic reliability computing formulas are established under structural strength without degeneration and structural strength with degeneration by using stress-strength interference theory and stochastic process theory; it shows that the reliability of the structure is gradually reduced with time, but not unchanged. Finally, three numerical examples to illustrate the models are correct, feasible and practicable. |
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| Keywords: | stochastic load structure dynamic reliability computation |
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