Study establishes distribution function of peak response values, based on frequency interpretation. Excitations considered include impact loading on landing gears and aircraft gust loading. Because of relative severity of excitations, prediction of fatigue and maximum response characteristics is important part of task of structural analysis and design

Shinozuka, M.

Yang, J.-N.

English

NASA Technical Reports Server

June 1971	 Brief 71-10188 
NASA TECH BRIEF	 V NASA Pasadena Office	 W 
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Peak Structural Response to Nonstationary Random Excitations 
A study was conducted to establish analytical 
expressions for the response of structures to severe 
random nonstationary (transient) excitations. Im-
pact loading on the landing gears and gust loading 
of an aircraft are typical examples of the excitations 
considered. Because of the relative severity of these 
excitations, the prediction of fatigue and maximum 
response characteristics is an important part 
of the task of structural analysis and design. 
The study established the distribution function of 
peak response values, based on a frequency inter-
pretation. The distribution can be approximated by 
the Weibull distribution with the aid of the Monte 
'Carlo technique based on simulated peak values. 
By this means, simplified expressions for the 
expected fatigue damage and the asymptotic dis-
tribution function of the maximum peak response 
of structures were derived. Applications of these 
simplified expressions are demonstrated by numerical 
examples in the report of the study.
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Reference: B71-10188 
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Source: M. Shinozuka and J.—N. Yang of

Caltech /J PL
under contract to
NASA Pasadena Office
(NPO-1 1617) 
Category 06 
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https://ntrs.nasa.gov/search.jsp?R=19710000187 2020-03-17T02:24:34+00:00Z


Peak structural response to nonstationary random excitations

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