Science Progress ( IF 2.1 ) Pub Date : 2020-09-03 , DOI: 10.1177/0036850420950122 Yu Hou 1 , Ming Zhang 1 , Hong Nie 2
The finger lock in the retractable actuator of the landing gear will wear during repeated unlocking and locking. Therefore, the effects of six parameters including the material of the finger lock, the length of the finger lock, the diameter of the finger lock, the number of petals, and the angle of the fingertip on the unlocking force after 500 unlocking cycles are researched. Archard wear theory was performed to obtain the unlocking force after wear and the influence of six key parameters on the unlocking force in this paper. Then, wear experiment was designed and the effectiveness of model and the influence of six parameters were verified. The results show that the chamfers of the finger lock was most worn, causing the value of the axial unlocking force during the transition phase to increase, but it has little effect on the maximum unlocking axial force. The material of the lock has little effect on the axial force; the length, diameter and the number of petals are inversely proportional to the axial force, and the angle of the fingertip is proportional to the axial force. Using Archard method can effectively calculate the finger pattern wear of locks.
中文翻译:
起落架不同设计参数的指锁磨损分析。
起落架伸缩致动器中的指锁在反复解锁和锁定过程中会磨损。因此,研究了指锁材质、指锁长度、指锁直径、花瓣数、指尖角度等6个参数对500次解锁循环后解锁力的影响。 。本文利用Archard磨损理论得到了磨损后的解锁力以及六个关键参数对解锁力的影响。然后设计了磨损实验,验证了模型的有效性以及六个参数的影响。结果表明,指锁倒角磨损最严重,导致过渡阶段轴向解锁力值增大,但对最大解锁轴向力影响不大。锁具的材料对轴向力影响不大;花瓣的长度、直径和数量与轴向力成反比,指尖的角度与轴向力成正比。利用Archard方法可以有效地计算锁具的指纹磨损情况。