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EFFECTS OF SIDE GROOVE ON FRACTURE TOUGHNESS

机译:侧面沟槽对断裂韧性的影响

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This paper describes ductile tearing simulation for compact tension (C(T)) specimens using FE damage analysis based on the stress-modified fracture strain model. The side groove effect on J-resistance curve was estimated by experimental and analytical ways. In this paper, SA508 Grade 1A low alloy steel pipe material was considered. Tensile and C(T) specimens are simulated to determine the failure criteria with finite element method. Then, different shapes of C(T) specimens are analysed and the results from simulations are compared with test data for verification of proposed method. Overall, the predicted simulation results show good agreement with test data.
机译:本文基于基于应力修正断裂应变模型的有限元损伤分析,描述了致密拉伸(C(T))标本的延性撕裂模拟。通过实验和分析方法估计了侧槽对J电阻曲线的影响。本文考虑了SA508 1A级低合金钢管材料。模拟拉伸和C(T)试样,以有限元方法确定破坏准则。然后,分析不同形状的C(T)标本,并将模拟结果与测试数据进行比较,以验证所提出的方法。总体而言,预测的仿真结果与测试数据显示出良好的一致性。

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