分瓣式内卡瓦有限元分析及结构参数优化设计

Finite Element Analysis &Structural Parameters Optimization Design on Valvular Slip

以分瓣式内卡瓦力学性能为研究目标,以卡瓦锥角γ、牙倾角α、螺距d及螺纹啮合深度h为参数,采用ANSYS有限元分析法及正交试验法对内卡瓦结构进行参数优化设计。通过极差法和方差法对试验结果进行分析,得出卡瓦锥角和螺距为影响其力学性能的显著性因素。当γ、α、d和h分别取6°、20°、2.5mm和0.5mm时,卡瓦力学性能最优。

Recognizing the mechanical properties of valvular slip as the research object,and using slip cone-angle,teeth-angle,pitch and depth of the thread engagement as the parameters for factors,finite element analysis method and the orthogonal experiment method are adopted to conduct parameters optimization design on the structure of ship,and the range-method and variance-method were used to analyze the testing result,it is concluded that slip cone-angle and pitch were the significant factors affecting its mechanical performance,and the valvular slip would achieve the optimal mechanical performance whenγ,α,d were 6°,20°,2.5mm and 0.5mm respectively.