可变弯度导叶调节机构柔性多体仿真

Flexible Multi-body of Variable Inlet Guide Vane Actuation Systems

中文关键词:  可变弯度导叶调节机构  角度调节  柔性多体动力学  运动副  联动环  摇臂  风扇

英文关键词:variable inlet guide vane (VIGV) actuation systems  vane angle adjustment  flexible multi-body dynamic  kinematic pairs  unison ring  lever arms

中文摘要:

      为考察可变弯度导叶（VIGV）调节机构在运动过程中各零件的变形以及变形对调节精度、各叶片调节角度一致性的影 响，利用有限元软件ABAQUS建立VIGV调节机构的柔性和刚性多体动力学3维模型。研究了柔性与刚体模型调节机构运动差 异，并分析了变形量对叶片角度调节的影响。在此基础上，对联动环径向限位、驱动力加载速率以及运动副摩擦阻力对机构调节 精度等影响进行分析。结果表明：在调节角度较小时，柔性模型与刚体模型分析结果基本相当，随着调节角度的增大，各零件的变 形对调节角度的影响逐渐增大，当L形杆转动0.5 rad时，二者可调叶片调节角度相差约0.9。；在运动过程中，运动副摩擦阻力的增 大将增大机构运动所需的驱动力，驱动力加载速率对叶片角度调节的影响在一定范围内可以忽略；联动环径向限位的取消或分布 的不均匀均将引起叶片调节角度不同程度的差异，无联动环径向限位下，各摇臂之间的调节角度存在最大相差约0.3°的差异。

英文摘要:

      In order to investigate the deformation of parts during the movement of variable inlet guide vane (VIGV) actuation systems and the effect of deformation on adjustment accuracy and consistency, the flexible and rigid multi-body dynamic 3D models of VIGV actuation systems were established in the commercial package ABAQUS. The difference between flexible and rigid body models was studied, and the deformation effect on vane angle adjustment was analyzed. On this basis, the effects of radial limit of unison ring, driving loading rate and friction of kinematic pairs on VIGV actuation systems were analyzed. It is found that the analysis results of the flexible and rigid models are basically same under a small adjustment angle. While, with the increase of the adjustment angles, the influence of part deformation is gradually enhanced, when the L-shaped rod is rotated by 0.5 rad, the difference of adjustment angle is about 0.9。 between two models. In the adjusting process, the frictional augment will need more force to drive the systems, and the loading rate can be ignored in a certain range. Meanwhile, the cancellation and uneven distribution of unison ring radial limit will cause the inconsistency of vane adjustment angles, the maximum difference of adjustment angles between lever arms is about 0.3°under unison ring radial limit is cancelled.