仿生抗冲蚀阀芯的数值与实验研究
首发时间:2019-05-13
摘要:水液压技术中的冲蚀磨损现象严重影响了水液压系统的安全性与稳定性。本文针对水液压技术中的冲蚀磨损现象进行研究分析,分别从能量吸收和表面仿生结构两方面对阀芯结构进行改进。运用LS-dyna显示动力学软件进行仿真计算,分析密封面处所受的等效应力、塑性应变和柔性结构的能量吸收效果,并应用Fluent对阀芯表面流场及冲蚀磨损状况进行仿真分析,根据贝类耐冲蚀原理建立不同类型的表面结构,提升阀芯表面抗冲蚀能力。最后,搭建水液压冲蚀实验系统,对具有不同结构的阀芯进行冲蚀实验,验证不同结构抗冲蚀能力的有效性,最终获得性能最优的仿生抗冲蚀阀芯。
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Numerical and Experimental Study of Bionic Anti-erosion Valve Plug
Abstract:The erosion wear phenomenon in water hydraulic technology seriously affects the safety and stability of the water hydraulic system. In this paper, the erosion and wear phenomena in water hydraulic technology are studied and analyzed, the valve plug structure is improved from energy absorption and surface biomimetic structure. The LS-dyna display dynamics software was used to analyzethe equivalent stress, plastic strain and energy absorption effect of the flexible structure at the sealing surface. The flow field and erosion wear condition of the valve plug surface were simulated by Fluent. According to the erosion resistance principle of shellfish, different types of surface structures are established to improve the erosion resistance of the valve plug surface. Finally, the hydraulic hydraulic erosion test system was set up, and the valve plug with different structures was subjected to erosion test. Finally, obtain the best performance bionic anti-erosion valve plug.
Keywords: water hydraulic technology erosion wear energy absorption surface biomimetic structure
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