【摘要】 当前航空产品要求高可靠性、高环境适应性,以适应日趋严酷的产品使用环境。由于随机振动激励环境的复杂性,难以有效分析产品在振动环境下的疲劳寿命和可靠性。基于Miner准则和干涉模型,提出了典型电路板在随机激励下疲劳寿命和疲劳寿命可靠性的分析方法和步骤。并通过ANSYS分析与试验结果相结合,验证了方法和步骤的有效性。为电路板在振动环境下的环境适应性设计与分析提供了一个强有力的分析手段。更多还原

【Abstract】 Aerial products require high reliability and high environment worthiness to adapt more rigorous using environment.Because of the complexity of the random-vibration exciting signal,it is difficult to availably analyze the fatigue life and the reliability of the products in random-vibration environment.Based on Miner rule and interference model,this paper presents an analysis approach and process on the fatigue life and the reliability of typical circuit board in the random-vibration excitation.In this paper,it is proved that the analysis approach and process are valid by the combination of the analysis by ANSYS and the test result of the product.The paper gives out a good means of the environment worthiness design and analysis for the circuit board under the random-vibration environment.更多还原