基于不同结构参数及工况对辊筒动力学特性影响的有限元分析

Finite Element Analysis of the Influence of Working Condition and Structure Parameters on Dynamic Characteristic of the High-speed Paper Machine Roller

关键词:  高速纸机  辊筒  动力学  特性  有限元分析

Key Words:high speed paper machine  roller  dynamics  character  finit element analysis

摘要:通过ANSYS有限元软件对不同工况和结构参数的干网导辊进行动力学特性分析,着重探究了辊筒的长度、直径、壁厚以及轴承支撑刚度对辊筒动力学特性的影响。分析得出辊筒长度对其动力学特性影响较大,直径和壁厚可以改善辊筒振幅,支撑刚度对其几乎无影响。降低纸机横幅、增大辊筒直径可以提高车速,壁厚对改善辊筒振幅效果最为明显。

Abstract:With the continuous increasing of paper machine speed, roller dynamic performance is very important and it will limit the increase of paper machine speed. The paper analyzed different working conditions and structure parameters and researched dynamic characteristics of dry felt guide roller by using the finite element software ANSYS workbench. It was emphatically investigated that the impact of the length, diameter, wall thickness and bearing supporting stiffness on the dynamic characteristics of the roller. The analysis results indicated that the roller length had greater influence on its dynamic characteristics, and increasing diameter and wall thickness could improve amplitude, but support rigidity almost had no effect on it. Reducing paper machine width and increasing roller diameter could improve the speed, wall thickness affected most obviously the vibration amplitude of the roller.