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基于概率-椭球混合模型的缓冲气囊防护特性可靠性分析方法

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成果类型:
期刊论文
论文标题(英文):
Hybrid Reliability Approach for Airbag Protection Performance Based on Probability and Ellipsoidal Convex Models
作者:
刘鑫;尹来容;胡林
作者机构:
[尹来容; 胡林] Hunan Province Key Laboratory of Safety and Reliability Technology for Engineering Vehicle, Changsha University of Science and Technology, Changsha, 410004, China
State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, 710049, China
[刘鑫] Hunan Province Key Laboratory of Safety and Reliability Technology for Engineering Vehicle, Changsha University of Science and Technology, Changsha, 410004, China<&wdkj&>State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, 710049, China
语种:
中文
关键词:
缓冲气囊;装备空降;相关性;混合模型;可靠性分析
关键词(英文):
Automobile air bags;Computational efficiency;Genetic algorithms;Parachutes;Uncertainty analysis;Vehicle performance;Ellipsoidal convex model;Hybrid reliability;Hybrid reliability models;Intergeneration-projection genetic algorithms;Karush Kuhn tucker condition;Optimization problems;Protection performance;Reliability Index;Reliability analysis
期刊:
机械工程学报
ISSN:
0577-6686
年:
2020
卷:
56
期:
2
页码:
130-137
基金类别:
国家自然科学基金(51305047,51775057) 湖南省教育厅科学研究(16B014) 机械结构强度与振动国家重点实验室(西安交通大学)开放基金(SV2016-KF-09)资助项目
机构署名:
本校为第一机构
院系归属:
汽车与机械工程学院
摘要:
针对多重不确定性因素对缓冲气囊防护特性的影响,提出一种基于概率-椭球混合模型的缓冲气囊防护特性可靠性分析方法。首先,利用概率模型和椭球凸集模型对装备空降过程中的不确定性因素进行描述,并建立缓冲气囊防护特性可靠性分析模型;然后,利用Karush-Kuhn-Tucker最优化条件将可靠性指标求解时面临的双层嵌套优化问题转化成单层优化问题,实现循环嵌套优化问题的解耦,从而提高可靠性指标的求解效率;最后,利用隔代映射遗传算法对气囊防护可靠性指标进行求解,并通过开展装备落地碰撞试验对缓冲气囊的防护特性进行验证。结果表明,该方法能有效对缓冲气囊的防护特性进行可靠性评估,并确保空降装备的安...
摘要(英文):
Considering the influence of multi-source uncertainties on airbag protection performance, a hybrid reliability approach based on probability and ellipsoidal convex models is presented for airbag protection performance. Firstly, the probability and ellipsoidal convex models are used to quantify the uncertainty, and the reliability analysis model of airbag protection performance will be constructed. Then, considering the original hybrid reliability analysis belongs to a complex nesting optimization problem, an efficient decoupling strategy is sug...

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