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该文通过节段模型风洞试验,以7个不同截面参数的H型吊杆为对象,系统研究了翼板开孔和截面高宽比两参数分别对H型吊杆的颤振、驰振和涡振性能的影响。试验结果表明:高宽比H/B=0.417时,增大翼板开孔可明显提高H型吊杆弱轴向驰振临界风速,同时也会改善吊杆的涡振稳定性,但对扭转颤振和强轴向驰振性能无明显作用;增大高宽比可同时提高H型吊杆弱轴向和强轴向的驰振临界风速,也可显著的影响颤振和涡振特性。总的看来,增大高宽比较翼板开孔能更好的提升H型吊杆风振稳定性。
In this paper, through the wind tunnel test of segment model, the H-boom with seven different cross-section parameters is studied. The flutter, galloping And vortex vibration performance. The results show that when the aspect ratio H / B is 0.417, increasing the wing opening can obviously increase the critical axial velocity of H-boom under weak axial vibration and also improve the vortex stability of the boom. However, Flutter and strong axial vibration performance have no significant effect; increasing the aspect ratio can improve the H-boom weak axial and strong axial Chi Chi critical wind speed can also significantly affect the flutter and vortex characteristics. In general, increasing the width and width of the wing openings can better enhance the stability of H-boom wind vibration.