乏燃料模拟组件剪切断裂过程分析

目前我国乏燃料后处理关键设备之一的剪切机仍存在一些技术性问题,为了进一步合理使用,需要得到详细的剪切力变化趋势、间隙与刀具磨损对剪切力和剪切质量的影响.本文利用ABAQUS软件对乏燃料模拟组件剪切过程进行有限元分析,得到了断裂区单元应力、应变趋势和剪切过程中剪切力的变化曲线.通过建立不同间隙和倒角时单根燃料棒剪切的有限元模型,分析了主副刀间隙和刀具磨损对剪切力和剪切质量的影响.并在乏燃料剪切实验装置上进行实验研究,实验结果与模拟结果一致,为乏燃料剪切机的有效应用提供了可靠的依据.

Shear Fracture Analysis of Simulation Spent Fuel Component

At present,there still exist some technical problems in the spent fuel reprocessing key equipment shear machine.In order to further improve its operation,details of the shear force trend,clearance and tool wear''s influence on shear force and shear quality are needed.Shear fracture process has been analyzed with finite-element analysis in ABAQUS software.Stress-strain trend about crack and the change of shear force have been got.Establish single shear fuel finite element model of different clearance and chamfer,analyze the clearance between main and deputy kNife and tool wear''s influence on shear force and the quality of shearing,then set up the experiment to study the spent fuel shearing process.The experimental results are consistent with the simulation results.This provides a reliable basis for the spent fuel shear machine improving operation.