| 董娜1'2，倪益华1'2，刘达列1'2，许为群1'2，倪忠进1'2.欧姆形对称型双螺杆的参数化建模与数值模态分析[J].轻工机械,2015,33(6): |
| 欧姆形对称型双螺杆的参数化建模与数值模态分析 |
| Parametric Modeling and Numerical Modal Analysis of Omega Shaped Symmetrical Double Screw |
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| DOI：IO. 3969/j . issn. 1005 -2895. 2015. 06. 001 |
| 中文关键词: 双螺杆泵 螺旋套 摆线 型线 参数化建模 模态 |
| 英文关键词:twin screw pump helical units cycloid profile line parametric modeling modal |
| 基金项目:国家自然科学基金( 61175125)；浙江省白然科学发展基金(L215 E050003)；浙江省教育厅资助项目(Y201329351)；浙江农林大学发展基金( 2012FR027)；浙江省高校发展基金（FX2013061） |
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| 中文摘要: |
| 针对已有螺杆型线方程参数化建模过程复杂、时间长的问题。根据型线的设计原则与要求，利用坐标系转换，构
建了一种易于参数化建模且密封性、啮合性好的欧姆(Q)形对称型端面型线方程，方程的滚圆相对于节圆的公转角￡，根
据螺杆传动几何关系推导并界定范围；以Visual Basic程序设计语言为开发工具，三维软件SolidWorks为二次开发平台，
实现了螺旋套的参数化实体建模；建立了螺杆的固有特性分析模型，用ANSYS软件对螺杆的轴承处进行了刚性与弹性
约束下的模态分析，并考虑了不同的弹性单元刚度对固有频率的影响。结果表明：弹性约束下螺杆的固有频率明显降
低，2种约束下的振型一致，弹性单元的刚度对弹性约束下的固有频率没有影响。文中研究为双螺杆泵型线改进设计及
螺杆模态分析提供理论依据，大大提高设计效率 |
| 英文摘要: |
| For the existing screw type line equation,parametric modeling complex, long-time problems, according to the
design principles and requirements of profiles, by using of coordinate transformation,Q一shaped symmetrical end face
profile equations with easy-parametric modeling and good sealing,engagement properties were built. With respect to the
pitch circle . rounded corners public t of the equations were deduced and defined ranges based on geometric relationships
of screw driving; Visual Basic program language for the development tools. three-dimensional software SolidWorks for
secondary development platform. achieved a parametric solid modeling of screw spiral sets; established the inherent
characteristics of the screw analysis model. with ANSYS software did modal analysis of the bearing on screw under the
constraints of rigidity and flexibility and considered the effects of different elastic stiffness of the natural frequency. The
results show that: the natural frequency of the screw under elastic constraints is decreased obviously, the modes under
two constraints are consistent. stiffness of the elastic element has no effect on the natural frequency of the elastic
constraints. The research provided the theoretical basis for the improvement design of the double screw pump and the
screw mode analysis, and greatly improved the design efficiency. |
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