摘要
随着计算机技术的快速发展,CAE技术也越来越多的应用到工程技术领域。采用计算机有限元技术,在对换热器管板在开槽宽度不同情况下,对液压胀接接头拉脱力的有限元进行模拟分析。使用ANSYS软件进行三维建模,并施加载荷及边界约束条件进行模拟计算。根据理论设计参数进行实验,将实验结果与有限元模拟结果进行比较,结果发现:拉脱过程中支反力最大值发生在拉脱起始阶段,开槽宽度越大,拉脱力越大;当开槽宽度小于6mm时,理论与实验结果非常接近;当开槽宽度大于6mm时,理论与实验结果随宽度增大而相差越大,主要是由于管子和槽边缘之间的严重的“刮蹭”引起的。
Along with the development of the computer, the CAE technology is more and more broadly used in engineering. The simulation of pull-out force in hydraulically expanded joint was made in the case of different width grooves of tube holes between tube and tubesheet in heat exchanger by finite element technology. Three dimensions moldel was built by ANSYS software, then simulation was made on condition that load was put on tubes and border restriction was given. Comparing the results between finite element analysis and experiment, it shows that the maximal value of the reaction force occurs at the beginning of pull-out process; the larger the groove width, the greater the pull-out forces; the result of finite element analysis is very close to the experiment when the groove width is less than 6 mm; when the groove width is larger than 6 mm, the larger the groove width, the greater the difference between two results. The reason is mainly owing to the serious scratch between tube and brink of the groove.
出处
《石油化工高等学校学报》
CAS
2005年第2期53-55,共3页
Journal of Petrochemical Universities
关键词
液压胀接
槽宽度不同
拉脱力
有限元分析
Hydraulically expanded joint
Different width of tubesheet hole groove
Pull-out force
Finite element analysis
