Simulation Analysis of Contact Force of Semi-flexible Wall Nozzle Throat
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摘要: 在刚柔耦合动力学理论基础上，联合PATRAN/NASTRAN与ADAMS软件对喉块柔板进行动力学仿真，让喉块与柔板运动到目标位置，仿真结果显示，忽略喉块和柔板接触点运动轨迹规划，会使得喉块与柔板连接处接触力过大不满足要求。为此对喉块与柔板接触点运动轨迹进行轨迹规划，考虑喉块和柔板的运动协调性，调整喉块和柔板接触点运动轨迹，结果表明：该方法既满足喉块与柔板接触力大小，又能保证喉块和柔板的型面精度，为喉块柔板协调运动提供必要的理论依据。Abstract: Based on the theory of rigid-flexible coupling dynamics, the PATRAN/NASTRAN and ADAMS software are used to simulate the dynamics of the laryngeal plate, so that the laryngeal block and the flexible plate move to the target position. The simulation results show that if the contact point motion trajectory of laryngeal block and the flexible plate is ignored, the calculated contact force between the laryngeal block and the flexible plate will be too large to meet the requirements. To this end, the trajectory planning of the contact trajectory of the laryngeal block and the flexible plate is considered. Considering the motion coordination of the laryngeal block and the flexible plate, the trajectory of the laryngeal block and the flexible plate contact point is adjusted. The results show that the method satisfies both the laryngeal block and the flexible plate, the contact force can ensure the profile accuracy of the laryngeal block and the flexible plate. This study provides the necessary theoretical basis for the coordinated movement of the laryngeal block.
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Key words:
- ADAMS /
- rigid-flexible coupling /
- contact force /
- track naturalization /
- simulation /
- nozzle throat
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表 1 柔板前6组铰点位置
柔板铰点 1 2 3 4 5 6 铰点坐标 xi 0.019 0.099 0.405 1.201 2.773 4.698 yi -5.84 -19.11 -46.011 -88.86 -148.59 -208.65 
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表 2 9组滑块位移
滑块 1 2 3 4 5 6 7 8 9 位移/mm -5.837 -19.11 -46.01 -88.86 -148.6 -208.6 -350 -520 -659
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表 3 规划前后对比
指标类型 柔板应力/MPa X向最大接触力/104N Y向最大接触力/105N 柔板与目标型面误差/mm 喉块与目标型面误差/mm 未规划 180.45 964.98 6.186 0.956 1.021 规划后 180.35 18 3.668 0.956 1.021
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