balde

Study on Diamond Balde Dry Cutting Concrete

金刚石锯片干切削混凝土研究

Classical flutter analysis of helicopter researched the instability of the rigid balde in the coupling of the lowest flap and torsion mode .

直升机经典颤振分析是研究刚性桨叶的最低阶挥舞模态与最低阶扭转模态的耦合不稳定性。

Moreover , when the welding section length of balde outlet is from 40 mm to 90 mm , the decreasing effect of residual stress is reducing with the welding section length 's increasing of blade outlet .

当叶片出水边焊段的长度在40~90mm的范围内，残余应力的降低效果随着叶片出水边焊段长度的增加而减小。

The balde root and groove joins by the tooth , that is more advanced joint manner now . For optimizing the design of tooth , we must analyse the contact stress between the blade root and groove .

叶根与轮槽间通过齿连接是目前采用的比较先进的连接方式，为了优化齿型设计，必须对于叶轮和轮槽间的应力进行分析。

It was assumed there was a virtual velocity of grid node on blade surface . Then , the blade geometry was modified by the difference between surface pressure and target pressure of the Original balde and temporary blades during iterative procedure .

假设叶表的网格点存在虚拟移动速度，迭代过程中由原叶片、过渡叶片表面的实际静压与目标静压之差来驱动叶型修改。