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TutorialsEquivalent Static Load for Random Vibration. The static load is taken from the threesigma vibration response: eqstatic.pdfRelated Rayleigh distribution program: peak_response_random.exe 
H.M. Lee, Testing for Random Limit Load Versus Static Limit Load, NASA TM108542: Lee1.pdfH.M. Lee, A Simplistic Look at Limit Stresses from Random Loading, NASA TM108427: Lee2.pdfForcelimited Acceleration Spectra Derivation by Random Vibration Analysis: Methodological Cases and Industrial Application: Trittoni_Force_limited.pdfIntroduction to the Vibration Response Spectrum: vrs.pdfDerivation of Miles Equation for Base Excitation: Miles.pdfSee also: Vibration Response Spectrum 
Cantilever Beam AnalysisEquivalent Static Load for a Cantilever Beam Subjected to Base Excitation, Part I: Sine Input: eqs_cantilever.pdfSteadyState Vibration Response of a Cantilever Beam Subjected to Base Excitation: steady_cant.pdf

Robert L. Towner, NASAPractical Approach for Random Load Factors RLF.pdfPowerPoint Presentation, FEA model, and Handcalculation notes RandomLoadFactors.pdf 
Software Description 


Vibration response spectrum of a singledegreeoffreedom system subjected to base excitation. 
vrs.exe 
vrs.cpp 
SDOF fatigue calculation for a given PSD input. The fatigue metric is in terms of acceleration raised to a fatigue exponent. 
vrs_fatigue.exe 
vrs_fatigue.cpp 
SDOF fatigue calculation for a given base excitation time history. The fatigue metric is in terms of acceleration raised to a fatigue exponent. 
qsrs_fatigue.exe 
qsrs_fatigue.cpp 
Response of an individual singledegreeoffreedom system to base excitation. 
sdof_ran.exe 
sdof_ran.cpp 
Response of an individual singledegreeoffreedom system to base excitation via Miles equation. 
miles.exe 
miles.cpp 