摘要
针对现有的伺服缸,对其内部的静压支承进行特性分析,建模后进行流固耦合分析,计算得到其内部的压力分布情况,进而求得静压支承进出口的流量和产生的承载力大小。运用MOGA算法,对静压支承机理及结构提出优化研究,结果表明,在一阶模态升高4.9%的情况下,油腔内部压力增加5%,油膜刚度增加了5.55%。可以看出,在不影响静压支承整体性能的情况下,通过优化静压支承结构尺寸,油腔内的油膜刚度可以显著提高。最后用优化前后的结构尺寸,在空载下伺服缸系统性能试验予以验证静压支承的整体性能,证明本静压支承设计与优化合格。
In view of the existing servo cylinder,the characteristics of its internal hydrostatic support were analyzed,and the fluid-structure coupling analysis was carried out after modeling.The internal pressure distribution was calculated,and then the flow rate and bearing capacity of the inlet and outlet of the hydrostatic support were obtained.MOGA algorithm was used to optimize the hydrostatic bearing mechanism and structure.The results showed that when the first-order mode increased by 4.9%,the internal pressure of the oil chamber increased by 5%,and the stiffness of the oil film increased by 5.55%.It can be seen that,without affecting the overall performance of the hydrostatic support,the oil film stiffness in the oil cavity can be significantly improved by optimizing the structure size of the hydrostatic support.Finally,using the structure size before and after optimization,the whole performance of the static pressure support is verified by the performance test of the servo cylinder system under no-load,which proves that the design and optimization of the static pressure support is qualified.
作者
王学国
张锐
张德华
安高成
陈峙
WANG Xue-guo;ZHANG Rui;ZHANG De-hua;AN Gao-cheng;CHEN Zhi(Shenzhen Kersten Hydraulic Equipment Co.,Ltd.,Shenzhen 518000,China;School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030000,China;Shanxi Pingyang Heavy Machinery Co.,Ltd.,Linfen 043003,China)
出处
《液压气动与密封》
2023年第5期23-28,32,共7页
Hydraulics Pneumatics & Seals
基金
2022年太原科技大学研究生教育创新项目(SY2022054)。
关键词
静压支承
流体分析
结构优化
油膜刚度
hydrostatic bearing
fluid analysis
structure optimization
oil film stiffness
