【作者】 晋萍；

【导师】 聂宏；

【作者基本信息】 南京航空航天大学 ， 飞行器设计， 2003， 硕士

【摘要】 关于起落架的设计及分析，现阶段在我国主要还是采用传统的方法，尚未有利用仿真软件进行起落架动态性能分析的报道，更未见利用仿真软件开发起落架数值样机设计平台。 本文以具体的支柱式起落架结构作为研究对象，应用动力学基本原理，建立了起落架及全机的着陆和滑跑动力学仿真模型，尽可能多地考虑了各种参数的影响，并对仿真结果进行了较深入的分析和探讨。其主要内容有； 1．以支柱式起落架飞机为原型，建立了一个适用于ADAMS软件的起落架着陆动态性能分析模型，并进行了仿真分析和参数优化设计。仿真分析结果与试验结果比较有着较好的一致性，参数优化设计有着很好的参考价值，表明基于ADAMS软件进行飞机起落架仿真分析是切实可行的。 2．基于ADAMS／Aircraft模块定义了一个由机身、起落架、刹车和机轮子系统构成的全机模型，并进行了整机着陆仿真分析(包括降落和落震两部分)。研究结果表明，利用ADAMS／Aircraft进行起落架或全机仿真分析不仅可信度高，而且事半功倍。 3．利用ADAMS／Aircraft模块创建全机仿真分析模型，进行飞机地面滑行动态响应仿真分析，仔细考虑了多种性能参数如轮胎刚度特性、轮胎与地面摩擦系数、跑道不平度等对起落架性能的影响。更多还原

【Abstract】 At present we still adopt traditional method about the design and analysis of landing gear in China. We seldom see the simulation analysis reports of dynamic behavior of landing gear, say nothing of exploiting design platform of digital model of landing gear based on simulation software.In the paper material post landing gear structure is developed by applying dynamics basic theory. Dynamic simulation models of landing and taxiing of undercarriage and full-aircraft are established, in which influence of parameter of sorts is as possibly considered as we can. The main contents are included as followings:A model for dynamic analysis of post landing gear is established based on ADAMS. By the model the simulation analysis and parameter optimization can be conducted in terms of the software. The output curves and results have good correspondence to those from drop tests. Parameter optimization has good reference worthiness. It proves reliable for ADAMS software to perform digital simulating analysis.A full-aircraft assembly model based on ADAMS/Aircraft is defined, which includes wheel subsystems, landing-gear subsystems, a brake subsystem, and an airframe subsystem, and performs full-aircraft landing simulation analyses (including aircraft landing and drop). It proves not only highly reliable for ADAMS/Aircraft to perform landing-gear or full-aircraft simulation analyses, but also get twice the result with half the effort.Another full-aircraft simulation analysis model based on ADAMS/Aircraft is established, and performs full-aircraft taxiing simulation analysis. Influence of behavior parameters of sorts is carefully considered such as tire stiffness,friction coefficient with ground> runway profile.更多还原