大型往复式除灰泵曲轴受力最危险工况的优化确定及其强度和刚度的三维有限元计算

【摘要】 本文针对三缸单作用式往复除灰泵曲轴断裂的问题,通过建立目标函数σ_i=f（x,θ）和σ_a=F(x,θ_max,θ_min),优化确定了三曲拐二支点曲轴静强度和疲劳强度的最危险工况,给出了曲轴的受力特性曲线。利用三维有限元法,对所研究曲轴的静强度和刚度以及疲劳强度进行了计算。分析指出了解决曲轴断裂问题的措施。更多还原

【Abstract】 On the problem of giant flushing plunger pump crankshaft breaking, by setting up the objective function σ_i=f（x, θ） and σ_a= F(x, θ_max（?） θ_min), the dangerous condition of three crank two bearing crankshaft is optimized and it’s load characteristic is given in this paper. By three dimentional element method, a static and fatigure strength and rigidity computation of studied crankshaft is made. Measures solving the problem of crankshaft breaking have been put out by analysis.更多还原