Uncertainly in Structural Frequency Computations
Publish place: 5th National Conference on Earthquake and Structural
Publish Year: 1393
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CESCM05_112
تاریخ نمایه سازی: 10 شهریور 1393
Abstract:
In most structural softwares, the design parameters are defined as deterministic parameters so, the obtained frequencies are deterministic but not reliable. For understanding the output frequency’s accuracy obtained from a software, the probability distribution of frequency is needed which is here the case. In this work, the probability distribution of frequency is derived by Monte Carlo simulation. To reduce the computational time, the natural frequencies are evaluated using two methods: (1) A linear regression model, (2) An efficient algorithm with first and second order approximations. Finally the paper, the efficiency of the proposed methods is discussed through an illustrative example.
Keywords:
Monte Carlo , Eigen-vector , Probability distribution function (PDF) , Linear regression , Uncertainty analysis
Authors
Alireza Tayeri
Graduate student in Azad University of Sirjan
Asghar Vatani Oskouei
Associate Professor in Shaid Rajaee Teacher Training University, Tahran
Seyed Sadegh Naseralavi
Assistant professor in Valy-e-Asr University of Rafsanjan