The condensability of liquid,the Westphal's effect and the continuous flow condition are not only comprehensively considered,but also the dynamic property of the ball valve being established.

结合现场试验,根据直线电机采油泵运动特性,综合考虑了液体的可压缩性、魏氏效应、液体连续流动条件和球阀的动力特性,建立了直线电机采油泵球阀运动规律的精确运动微分方程组。

The effect of the mesh density, the change of dynamic plasticity property of mild steel with strain rate and the spotweld mechanical property on the simulation results is analyzed.

分析了网格密度、身用低碳钢材料塑性特性随应变率的变化及焊点力学特性因素对仿真结果的影响。