曲がりかつねじれた片持薄板の自由振動 : 解析および実験結果

抄録

Free vibrations of curved and twisted cantilevered thin plates are investigated analytically and experimentally. A numerical method based on the Rayleigh-Ritz procedure is presented using algebraic polynomials as displacement functions and an approximate integration, dividing the plate into elements. Convergency studies of nondimensional frequency parameters are made with increase of the number of elements dividing the plate and of terms in the assumed functions. Then, effects of initial twist and curvature on vibrating characteristics are discussed for typical curved and twisted cantilevered plates. Finally, experimental tests are carried out and resonance frequencies and mode shapes obtained are compared with analytical results.