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首页> 外文期刊>Mathematical Problems in Engineering >Dynamics Analysis of the Rigid-Flexible Coupling Lifting Comprehensive Mechanism for a Rotary Dobby
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Dynamics Analysis of the Rigid-Flexible Coupling Lifting Comprehensive Mechanism for a Rotary Dobby

机译：旋转DOBBY刚性耦合提升综合机理的动力学分析

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摘要

This paper addresses the problem of dynamics analysis of the rigid-flexible coupling lifting comprehensive mechanism for a rotary dobby, which is the important part of the loom. To provide a physical model basis for a precise dynamics model, the finite element method was used to discretize the bending arm of the rotary dobby effectively. Combining with the modal synthesis techniques, the dynamic model of the bending arm was established by using Kane's formulation, and it laid a foundation for analyzing the dynamic performance of the heald frame. By comparing virtual prototype simulation results with the numerical calculation results of the bending arm, the correctness of this model was verified. Based on the established dynamic model, the modal truncation method is used to simplify the dynamic model; in addition, the influence of parameters such as the speed of the dobby, the warp tension, the movement distance of the heald frame, and the thickness of the bending arm on the dynamic characteristics of the heald frame was analyzed. Last, the sensitivity analysis (SA) method is used to analyze the effects of each parameter. The results show that it is appropriate to select the first four modes to calculate, and increasing the speed greatly or increasing the warp tension, the shedding performance is obviously worse, while the shedding performance of the loom can be optimized by reducing the shedding range or increasing the thickness of the bending arm.
机译：本文介绍了旋转多方刚性耦合升降综合机制的动力学分析问题，这是织机的重要组成部分。为了提供精确的动力学模型的物理模型基础，使用有限元方法有效地离散旋转多方的弯曲臂。结合模态合成技术，通过使用Kane的配方建立了弯曲臂的动态模型，并为分析了综框的动态性能奠定了基础。通过将虚拟原型模拟结果与弯曲臂的数值计算结果进行比较，验证了该模型的正确性。基于已建立的动态模型，模态截断方法用于简化动态模型;另外，分析了诸如多方的速度的参数，横框的速度，综帧的移动距离以及弯曲臂的厚度对综架的动态特性的影响。最后，使用灵敏度分析（SA）方法来分析每个参数的效果。结果表明，选择前四种模式计算，并增加速度大大或增加翘曲张力，但脱落性能明显差，而织机的脱落性能可以通过减少脱落范围或缩减范围来优化增加弯曲臂的厚度。

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  • 来源
    《Mathematical Problems in Engineering》 |2019年第12期|4896162.1-4896162.14|共14页
  • 作者

    Wei Xiaoyong; Jin Guoguang; Wei Zhan; Chang Boyan; Song Yanyan;

  • 作者单位

    Tianjin Polytech Univ Sch Mech Engn Tianjin 300387 Peoples R China|Tianjin Key Lab Adv Equipment Technol Tianjin 300387 Peoples R China|Nanjing Univ Aeronaut & Astronaut Sch Mech & Elect Engn Nanjing 210016 Jiangsu Peoples R China;

    Tianjin Polytech Univ Sch Mech Engn Tianjin 300387 Peoples R China|Tianjin Key Lab Adv Equipment Technol Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mech Engn Tianjin 300387 Peoples R China|Tianjin Key Lab Adv Equipment Technol Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mech Engn Tianjin 300387 Peoples R China|Tianjin Key Lab Adv Equipment Technol Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mech Engn Tianjin 300387 Peoples R China|Tianjin Key Lab Adv Equipment Technol Tianjin 300387 Peoples R China;

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