3533 溶接構造体の疲労き裂伝播シミュレーション解析(S14-3 FLARPによる疲労き裂発生伝播シミュレーション(3),S14 FLARPによる疲労き裂発生伝播シミュレーション)
詳細
Fatigue Cracks may initiate and propagate due to repeated load in welded structures. To maintain the fitness for the structure, we had developed system in prediction fatigue crack path, named CP-SYSTEM, which can make use of the FEM model for structural design. Further we have combined FLARP with CP-SYSTEM to improve accuracy of fatigue crack propagation life estimation. FLARP is able to simulate behavior of crack opening and closing and obtain parameter ΔK_<RP> correspond to repeated plastic deformation at the crack tip. To investigate applicability of the modified system, the predicted crack propagation lives are compared with experimental result of fatigue test of welded structure.
