基于虚拟样机技术的转鼓有限元仿真研究

Simulation Analysis of the Drum Based on Virtual Prototype Technology

利用Pro/Engineer建立了离心机转鼓的实体模型和虚拟样机模型,在MSC.VisualNastran环境下,采用有限元方法进行了运动学分析、模态分析和静力学分析,得到了转鼓两端轴承的力学状态、系统的多阶固有振动频率、振型以及应力、应变、位移等参数值。根据仿真结果,进行了强度和刚度的校核,分析了转鼓的主要破坏形式和危险位置以及液池深度的变化对转鼓强度和刚度产生的影响。结果表明:现有结构基本满足设计要求,同时给出了的优化方案,为离心机结构设计提供有价值的理论参考。

The solid model and virtual prototype model of the centrifuge drum were built.Dynamic,kinematics and vibration mode analysis were completed by use of the FEM.The analysis results of vibration mode,stress,strain and displacement by using MSC. VisualNastran were presented.Based on the simulation,the mechanics capability was proved,the main destroy form and location were indexed.The influence of fluid tank depth on the stress intensity and deformation was discussed.The result shows that the rigidity,strengthen meet the design requirement.An optimization structure was given and analyzed.The study is valuable for horizontal screw centrifuge.