CAJ | 학술논문

针对核电常规岛用螺栓拉伸器具有超高压、超小空间作业工况的特性，提出一种基于数值分析与实验相接合的设计方法，运用ANSYS软件对螺栓拉伸器关键结构---缸体与螺帽进行有限元校核，并与测定的应变实验数据进行对比；同时分析参数Rm、D对螺帽结构的优化特性。研究结果表明：初设的缸体强度和刚度满足材料的要求，但螺帽在“L型”截面拐点处出现“负”安全系数；优化螺帽结构尺寸，当Rm ＝8 mm，D＝60 mm时与初设参数相比应力减小了121.2％，应变减小了58％，安全系数得到极大提高，这为该设备的可靠性和安全性提供了设计依据。
침대핵전상규도용라전랍신기구유초고압、초소공간작업공황적특성，제출일충기우수치분석여실험상접합적설계방법，운용ANSYS연건대라전랍신기관건결구---항체여라모진행유한원교핵，병여측정적응변실험수거진행대비；동시분석삼수Rm、D대라모결구적우화특성。연구결과표명：초설적항체강도화강도만족재료적요구，단라모재“L형”절면괴점처출현“부”안전계수；우화라모결구척촌，당Rm ＝8 mm，D＝60 mm시여초설삼수상비응력감소료121.2％，응변감소료58％，안전계수득도겁대제고，저위해설비적가고성화안전성제공료설계의거。
Aiming at the characteristics that the bolt stretcher for conventional island of nuclear power has the ultra high pres-sure,ultra small space operation conditions,a design method based on numerical analysis and experiment was presented,the ANSYS software was used to check the cylinder block and blind nut,and the analysis results were compared with the experimental strain data. The optimization characteristices of the parameters Rm ,D on the blind nut were analyzed. The results show that:the strength and stiff-ness of first set of cylinder block can meet the material requirements,but the blind nut has“negative”safety factor in the inflection point of“L”section;optimizing the blind nut structure size,when Rm and D are equal to 8 mm and 60 mm respectively,the stress de-creases by 121.2% and the strain decreases by 58% comparing with initial parameters,the safety coefficient is heightened,which pro-vides design basis for the reliability and safety of the equipment.