CAJ | 학술논문

通过输流直管路轴向和横向振动的线性微分方程，推导出了输流管路轴向及横向振动的传递矩阵；对某直管模型进行数值分析计算得到了管路的各阶固有频率，计算结果与 ANSYS Workbench 仿真结果进行对比，二者计算结果吻合良好，验证了计算结果的准确性；最后，分析了不同约束条件、考虑和不考虑流固耦合作用下对管路固有频率的影响，并得出相应的结论。
통과수류직관로축향화횡향진동적선성미분방정，추도출료수류관로축향급횡향진동적전체구진；대모직관모형진행수치분석계산득도료관로적각계고유빈솔，계산결과여 ANSYS Workbench 방진결과진행대비，이자계산결과문합량호，험증료계산결과적준학성；최후，분석료불동약속조건、고필화불고필류고우합작용하대관로고유빈솔적영향，병득출상응적결론。
According to the fluid-filled straight pipe axial and lateral vibration linear differential equations, the axial and lat-eral vibration transfer matrix of fluid-filled straight pipe are deduced, and the natural frequency is obtained by numerical cal-culation. The two results are identical, when the calculated results comparing with the ANSYS Workbench simulation results. The accuracy of the calculated results is proved. Finally, the different effects of the natural frequency are analyzed which con-sidering the fluid-structure interaction effects or not in different constrain, and bring to the appropriate conclusion.