中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 1996, Vol. 15 ›› Issue (4): 14-20.

• • 上一篇    下一篇

飞机对机场道面的随机动压力

孙璐, 邓学钧   

  1. 南京:东南大学运输工程研究所, 210096
  • 收稿日期:1995-10-10 修回日期:1996-03-10 出版日期:1996-08-24 发布日期:2016-11-10
  • 作者简介:孙璐,男,1972年生,博士生.
  • 基金资助:
    国家自然科学基金

Random Pressure Generated by Airplane-Airfield Interactions

Sun Lu, Deng Xuejun   

  1. Nanjing, Southeast Univ., Dept. of Commu. & Trans
  • Received:1995-10-10 Revised:1996-03-10 Online:1996-08-24 Published:2016-11-10

摘要: 把机场道面平整度假设均值为零的平稳随机场,引入随机过程理论,描述了该随机场的几种统计特征,并把飞机简化为双自由度振动系统,利用频率响应函数的概念获得了飞机对不平整道面的随机动压力谱,还对实测随机动压力的方法进行了探讨.

关键词: 机场道面, 飞机, 平整度, 平稳过程, 随机动压力, 谱密度

Abstract: Pavement roughness of airfield is one of Primary factors causing vertical vibration of travelling airplane.In order to analyses pavement dynamics,the paper studies random force generated by air plane-airfield interactions.A two-degree-of-freedom suspenaion system that is the simplificahon model of an airplane is established,through which we can express power spectral density (PSD) of pressure as following form:Sp(ω)=(k2+C2ω2)|H1(ω)|2Sξ (ω).Here H1 (ω)is the property of thevibration system. Therefore, more statictical characterishcs can be obtained by this formula.

Key words: airplane, pavement of airfield, roughness, power spectral density, frequency response function, vibration system