| 摘要: |
| 目的 研究卷膜在拉开过程中的动力学仿真方法。方法 卷膜在受拉过程中， 相邻卷膜层之间会发生自身接触的高度非线性行为的动力学问题， 其分析计算量大且收敛困难。通过对卷膜的离散化建模， 以减少接触区域， 从而减少计算量。该问题方法借助于ANSYS软件， 用APDL命令流参数化建立卷膜模型， 施加边界条件， 并对其求解。结果 可以通过圆心与内圆节点建立刚性梁来创建圆的绕圆心转动的转动副； 对于类似卷膜的缠绕物体， 可以通过离散且用转动副连接相邻离散体的方法建立有限元模型； 得出了计算收敛后卷膜的动力学属性及其力学行为。结论 该方法对卷膜的建模及动力学仿真具有可行性， 为类似卷膜的接触动力学分析提供了借鉴方法。 |
| 关键词: ANSYS APDL命令 卷膜 动力学 接触分析 |
| DOI： |
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| Modeling and Dynamic Simulation of Roll Film Based on ANSYS |
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LI Zu-ji, SONG Shao-yun
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School of Mechanical Engineering， Wuhan 430023， China
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| Abstract: |
| The aim of this work was to study the dynamic simulation of roll film in the opening process. During the pulling process of roll film, the self contact between adjacent film layers was a dynamic problem with highly nonlinear behavior. This analysis meant large computation and difficult convergence. It could be solved by the proposed method for discrete modeling of the roll film by reducing the contact area in order to reduce the amount of calculation. The method was based on ANSYS software, and APDL command stream was used to establish parametric roll film model and apply boundary conditions. The revolute joints of the circle rotating around the center was created by building a rigid beam using the center and the inner circle node. Finite element model could be established for wrapped objects similar to roll film applying the discrete modeling and using revolute joints to connect the adjacent discrete bodies. The dynamics properties and mechanical behavior of the roll film were obtained after the convergence of calculation. The method for modeling and dynamic simulation of roll film in this paper was feasible, and provided reference for the contact dynamic analysis of similar roll films. |
| Key words: ANSYS APDL command roll film dynamics contact analysis |
