Elastik Yarı Düzlem İçin Bir Hareketli Yük Problemi

Bu çalışmada elastik bir yarı düzlemin sınırı boyu sabit hızla hareket eden bir normal kuvvetin etkisini dikkate alan bir dinamik problem konu edilmiştir. Lame hareket denklemi ve sınır koşulları boyuna ve enine dalga fonksiyonları cinsinden ilgili sınır değer problemine indirgenmiştir. Daha sonra hareketli koordinat sisteminden durağan koordinat sistemine geçilerek bu sınır değer problemi Fourier dönüşümü yardımıyla diferansiyel denklemler için sınır değer problemlerine indirgenmiştir. Fourier düzleminde boyuna ve enine dalga fonksiyonlarının ilgili integral dönüşümü belirlenmiş olup ters Fourier tekniği kullanılarak, nihayet yer değiştirme bileşenleri belirlenmiştir. Normal yükün hareket hızının Rayleigh dalga hızından küçük ve büyük olduğu durumlar incelenmiştir.

Anahtar Kelimeler:

Potansiyel Fonksiyonları, Fourier Dönüşümü, Rayleigh Dalga Hızı

A Moving-Load Problem for Elastic Half-plane

In this study, a dynamic problem that takes into account the effect of a normal force moving at a constant speed along the boundary of an elastic half-plane has been discussed. The Lame equation of motion and the boundary conditions have been reduced to the related boundary value problem in terms of longitudinal and transverse wave functions. Then, by switching from the moving coordinate system to the stationary coordinate system, this boundary value problem was reduced to boundary value problems for differential equations with the help of the Fourier transform. The corresponding integral transformation of the longitudinal and transverse wave functions in the Fourier plane was determined and the displacement components were finally determined using the inverse Fourier technique. Cases in which the moving speed of a normal load is smaller and larger than the Rayleigh wave speed have been studied.

Keywords:

Potansiyel Fonksiyonları, Fourier Dönüşümü, Rayleigh Dalga Hızı,

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