| 郑凌晨，陈洪立，李晓明，金玉珍.一种双层多节细长棒式棉纤维力学模型[J].轻工机械,2015,33(5): |
| 一种双层多节细长棒式棉纤维力学模型 |
| A Mechanical Model of Double-Layer and Multiple-Class Cotton Fiber |
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| DOI：IO. 3969/j . issn. 1005 -2895. 2015. 05. 006 |
| 中文关键词: 棉纤维 力学模型 微观结构 拉伸特性系数 |
| 英文关键词:cotton fiber mechanical model microscopic structure drawing coefficient |
| 基金项目:国家自然科学基金项目( 51205363)；浙江省自然科学基金项目(LY15E050027)；浙江省自然科学基金项目(L214E050004) |
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| 中文摘要: |
| 空气一纤维两相流的研究中，由于纤维模型不能完全真实地反映棉纤维的物理特性，因此数值模拟研究存在一定
的局限性。为了更准确地模拟棉纤维在气流场中运动，分析前人建立的纤维模型，采用高倍光学显微镜系统观测棉纤维
的微观结构，综合考虑棉纤维拉伸、扭转、弯曲、塑性、摩擦性等力学特征，提出一种双层多节细长棒式的棉纤维结构模
型。推导了相关的力学关系式，提出了该纤维结构模型中反映纤维力学性能的拉伸特性系数Ks、弯曲特性系数Kc、扭转
特性系数Kt、摩擦特性系数μ直径变化率ε共5个参数。该模型具有全面的纤维力学特性，完善了空气一纤维两相流问
题中棉纤维模型，文中的研究提高了数值模拟的真实性和准确性 |
| 英文摘要: |
| ln order to simulate the motion of cotton fiber in the airflow accurately, the model of fibers established was
expounded by domestic and overseas researchers. and adopted the system of high-power optical microscope to observe
the microscopic structure of cotton fiber. Considering the mechanical characteristics of cotton fiber. such as tension.
torsion. bending, plastic, a model of cotton fiber which was double-layer and multiple-class was put forward. The
related mechanics equation was deduced. and it put forward five parameters which were drawing coefficient Ks , bending
coefficient Kc , reversing coefficient Kt , friction coefficient μ and diameter rate ε. The model possesses comprehensive
mechanical characteristics. and it improves the research efficiency in two-phase flow problem. It improves the
authenticity and accuracy of numerical simulation. |
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