Aluminum alloy plate with a hole fracture experiment and numerical analysis

This article studies aluminum alloy plate through 16 to 3mm thick with a hole under room temperature fracture test. The experimental results show: the initial macroscopic crack initiation at the notch of the center of the surface, along the thickness direction through, then along the width direction of expanded rapidly until complete fracture. Specimen cracking load in the load displacement curve of descent, less than the limit load. Test piece opening more and more sharp, fracture ductility worse. Perforated plate cracking load depends mainly on the cross-sectional area, does not depend on the gap ratio (b/a). The test of aluminium alloy sheets for fracture mechanism and fracture design provides a reliable test data.