CAJ | 학술논문

为提高高速车辆零部件的可靠性和稳健性，结合可靠性优化设计理论和稳健设计方法，将可靠性灵敏度融入轴箱弹簧的可靠性稳健优化设计模型中，并将其归结为多目标优化问题。采用NSGA‐Ⅱ遗传算法对数值算例进行计算，获得其 Pareto解，根据经验和目标函数的重要性从中选出优化设计最满意的解。分析结果表明：在轴箱弹簧进行可靠性稳健优化设计后，降低了弹簧的质量，提高了弹簧的可靠性，同时使弹簧的可靠性对各基本设计参数的灵敏度数值明显降低，轴箱弹簧的安全可靠性和稳健性得以提高，验证了该设计方法的实用性和有效性。
위제고고속차량령부건적가고성화은건성，결합가고성우화설계이론화은건설계방법，장가고성령민도융입축상탄황적가고성은건우화설계모형중，병장기귀결위다목표우화문제。채용NSGA‐Ⅱ유전산법대수치산례진행계산，획득기 Pareto해，근거경험화목표함수적중요성종중선출우화설계최만의적해。분석결과표명：재축상탄황진행가고성은건우화설계후，강저료탄황적질량，제고료탄황적가고성，동시사탄황적가고성대각기본설계삼수적령민도수치명현강저，축상탄황적안전가고성화은건성득이제고，험증료해설계방법적실용성화유효성。
In order to improve the reliability and robustness of the parts of high‐speed vehicles , based on the re‐liability optimization design theory and the robust design method , the reliability sensitivity was integrated into reliability‐based robust design model of the axle‐box spring ,which was described as a multi‐objective optimiza‐tion problem . The paper calculated the numerical example for the Pareto solutions by using the NSGA‐Ⅱ ge‐netic algorithm , and selected the best solution to the optimal design according to the experience and the impor‐tance of the objective function . The analysis results showed that the mass of spring was reduced and the relia‐bility of spring was improved after the reliability‐based robust optimization design for axle‐box spring . Fur‐ther , the sensitivity value of each basic design parameters relative to the reliability of spring decreased signifi‐cantly w hile the reliability and robustness increased , verifying the practicability and effectiveness of the design method .