On the Strength of Racks for Jack-up Units : No.1 Report: Fatigue Behavior of Large Scale, Torch-cut and Machined High Tensile Strength Steel Racks

概要

論文の詳細を見る
This report presents the results of fatigue testing on torch cut and machined high tensile strength steel (HT80 steel) racks of 40.4mm in module, 25 degrees in pressure angle and 63.5mm in rim thickness. Strain distributions along compressive and tensile fillets of the racks were obtained using the strain gage method and the results wore compared with those obtained using a finite element technique. The relations between the fatigue strength and the strain amplitude at the most critically stressed point in the rack fillet were then obtained utilizing the above mentioned results. Crack propagation behavior in the rack fillets was observed using plastic replicas, a magnifying glass, crack gages and the crack mark method. The results obtained are useful for fracture control of the racks.
一般社団法人日本機械学会の論文