Print Email Facebook Twitter Theoretical analysis of the tyransient response of a wing to non-stationary buffets load Title Theoretical analysis of the tyransient response of a wing to non-stationary buffets load Author Lee, B.H.K. Institution National Research Council Canada, National Aeronautical Establishment, High Speed Aerodynamics Laboratory Date 1979-04-30 Abstract A method for predicting the response of a wing to non-stationary buffet loads is presented. The wing is treated as a cantilever beam with known mass distribution. Using generalized co-ordinates, the vibration of the wing is governed by the second order mass-spring-damper oscillator equation. The buffet load on the wing is expressed as an integral of the sectional force, which is a function of the spanwise location and time. The non-stationary load is represented by the product of a deterministic time function and a statistically stationary random function. The time history of the applied load is segmented into a number of time intervals. Analytical expressions for the mean square response of the wing displacement are derived using a power spectral density for the random part of the applied load, similar to that used in the theory of isotropic turbulence. The effects of damping, ratio of the undamped natural frequency of the system to the half power frequency of the power spectral density, length of time segment, and duration of applied load on the response of the wing have been investigated for th ree examples of the load versus time histories. To reference this document use: http://resolver.tudelft.nl/uuid:0fc27abe-a49d-4519-919b-4d56d9fbddb7 Publisher National Research Council Canada Access restriction Campus only Source National Research Council Aeronautical Report LR 597 Part of collection Aerospace Engineering Reports Document type report Rights (c)1979 National Research Council Canada Files PDF LR-597.pdf 14.84 MB Close viewer /islandora/object/uuid:0fc27abe-a49d-4519-919b-4d56d9fbddb7/datastream/OBJ/view