随机性
非线性系统
接头(建筑物)
打滑(空气动力学)
表面粗糙度
随机建模
随机过程
表面光洁度
鉴定(生物学)
计算机科学
结构工程
工程类
机械工程
材料科学
数学
物理
植物
航空航天工程
统计
复合材料
生物
量子力学
作者
Hassan Jalali,Hamed Haddad Khodaparast,Hadi Madinei,Michael I. Friswell
标识
DOI:10.1016/j.ymssp.2019.04.003
摘要
Dynamic properties of the contact interfaces in joints and mechanical connections have a great influence on the overall dynamic properties of assembled structures. Uncertainty and nonlinearity are two major effects of contact interfaces which introduce challenges in accurate modeling. Randomness in surface roughness quality, surface finish and contact preload are the main sources of variability in the contact interfaces. On the other side, slip and slap are two mechanisms responsible for nonlinear behavior of joints. Stochastic linear/nonlinear models need to be developed for such uncertain structures to be used in dynamic response analysis or system parameter identification. In this paper, variability in linear behavior of an assembled structure containing a bolted lap-joint is investigated by using experimental results. A stochastic model is then constructed for the structure by employing a stochastic generic joint model and the uncertainty in the joint model parameters is identified by using a Bayesian identification approach.
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