Pimli bağlantılarda çatlak ilerleme yönünün sonlu elemanlar metodu ile bulunması

Bu çalışmada, içinde pim bulunan, yamuk şekilli bir levhanın çatlak ilerleme yönü $(theta)$ ve gerilme şiddeti faktörleri (KI, KII) sonlu elemanlar metodu (SEM) ile bulundu. Sonlu elemanlar analizi için Frank2DL programı kullanıldı. Levhanın delik kenarında 0°, 30°, 45°, 60°, 90°, 120°, 135°, 150°, 180° açılarında, 2 mm uzunluğunda çatlak oluşturulup; her bir açı değeri için gerilme şiddeti faktörleri ve ilk çatlak ilerleme açıları tespit edildi. Ayrıca ilk çatlak ilerleme açısı analitik olarak da bulunup, sonuçlar çizelge halinde verildi. SEM ve analitik olarak bulunan ilk çatlak ilerleme açılan birbirine yakın değerde olduğu sonucuna varıldı.

Determination of the crack growth direction by finite element method in pinned joints

In this study, the crack growth direction $(theta)$ and stress intensity factors (KI, KII) of a trapezium shaped plate containing pinned joint were found by means of finite element method (FEM). For the finite element calculations, Frank2DL program code was used. A crack which has 2 mm precrack length and 0 ,30 ,45 , 60°, 90°, 120 ,135 ,150 ,180 angle direction was formed in the border of the plate hole, and the stress intensity factors and the direction of the first crack growth angle were found for each angle directions. In addition, the first crack growth angle was also found analytically and the results were given in a table. The crack growth angle calculated by FEM and by analytic appoach were found to be close to each other.

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