首页> 外文会议>PVP-vol.493; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20051105-11; Orlando,FL(US) >CORRELATION OF TEST AND FEA STUDIES ON EFFECT OF BEND RADIUS AND THICKNESS ON RATCHETING IN PIPE BENDS SUBJECTED TO INTERNAL PRESSURE AND IN-PLANE BENDING MOMENT
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CORRELATION OF TEST AND FEA STUDIES ON EFFECT OF BEND RADIUS AND THICKNESS ON RATCHETING IN PIPE BENDS SUBJECTED TO INTERNAL PRESSURE AND IN-PLANE BENDING MOMENT

机译:弯曲半径和厚度对受内部压力和平面弯曲力矩影响的管道弯曲的影响的测试和有限元分析的相关性

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The paper deals with the results from the analytical study on ratcheting in pipe bends. There has been no well-defined material model and analysis procedure to predict this phenomenon accurately. A recent development in parameter selection of Chaboche's Kinematic hardening model has resulted in close predictions in ratcheting analysis. A problem has been selected from existing experimental results published in literature, and an analysis incorporating these parameters has been carried out and presented. The amount of stresses induced and strain accumulated in pipe bends with long and short radius and subjected to internal pressure and in-plane bending moment is studied. The results and their inferences are included. The analysis was carried out on 2-inch NPS SS304 pipe bends with different bend radius and two thickness (Schedule 40 and Schedule 80) using ABAQUS, non-linear FEA software to predict the strain accumulation and their influences on ratcheting failure is presented.
机译:本文讨论了弯管棘轮的分析研究结果。尚无明确的材料模型和分析程序来准确预测此现象。 Chaboche运动硬化模型的参数选择方面的最新发展已导致棘轮分析的紧密预测。从文献中发表的现有实验结果中选择了一个问题,并进行并提出了包含这些参数的分析。研究了在长短半径的弯管中受内压和面内弯矩作用的应力和应变累积量。结果及其推断也包括在内。使用ABAQUS在具有不同弯曲半径和两个厚度的2英寸NPS SS304管弯头(计划40和计划表80)上进行了分析,非线性FEA软件预测了应变累积及其对棘轮破坏的影响。

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