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圆截面扭转弹簧强扭角计算
圆截面 扭转弹簧 扭转角
2007/12/5
圆截面扭转弹簧是轮式及履带式车辆悬架的主要承载元件之一，预先进行强扭转是提高其性能的关键工艺。文章在研究圆杆经强扭转后截面残余应力分布基础上，计算了实际工作应力下降所导致的寿命提高及强扭转造成的寿命损失，为选择强扭转的角度提供了理论依据。
偏心轮推杆行星传动内齿圈齿廓及其结构特性研究
行星传动 齿廓 曲率半径 压力角
2007/12/5
对偏心轮推杆行星传动内齿圈齿廓的加工过程进行了计算机模拟；推导了实际齿廓的最小曲率半径和压力角的计算公式；定量分析了影响最小曲率半径和压力角的因素；得出了偏心距是偏心轮推杆行星传动的一个至关重要的参数的结论。
连续小波变换在齿轮磨损估计中应用研究
连续小波变换 齿轮 磨损估计
2007/12/5
通过对连续小波变换的分析研究,提出了一种提取信号在小波尺度上的能量谱的信号分析方法。该方法能有效地对不同磨损状况下的齿轮振动信号进行分析,分析结果说明信号在小波尺度上的能量谱与齿轮的磨损程度有密切的关系。求出不同磨损状况下齿轮振动信号的能量谱对尺度的积分值,并根据这些值拟合得到的曲线与齿轮磨损过程曲线非常相似,这说明可以用连续小波变换的能量谱估计齿轮磨损状况。最后提出了一种连续小波变换的齿轮...
齿轮虚拟参数化造型的新途径
三维CAD软件 齿轮虚拟参数化 实体造型
2007/12/5
提出逆向二次开发三维CAD软件的理念，利用三维CAD软件所具有的宏记录的功能，开发者避免了编写大量的程序代码，只要修改宏文件即可，降低了开发难度。通过应用Visual Basic(VB)程序语言，基于三维机械CAD软件SolidWorks2000平台，开发齿轮三维虚拟参数化造型设计系统的实例，介绍了应用该方法逆向开发三维CAD软件的全过程。解决了工业生产中齿轮三维虚拟造型设计的难题，并且提供了一种...
A Nonlinear Torsional Dynamic Model of Multi-Mesh Gear Trains Having Flexible Shafts
Gear HBM Multi-mesh Time-varying
2010/1/14
A non-linear time-varying dynamic model is developed to study torsional dynamic behavior of a typical multi-mesh gear
train. The physical system consists of M shafts (M ≥ 2 ) coupled to each other by...
Purpose: Lateral extrusion process with a lost core for cross fittings is suggested. At first, cavity of tube is filled up by low temperature melting melting alloy. Then low temperature melting materi...
Complex mathematical model and optimisation of vibration volumetric treatment for surfaces of machine parts
Mathematical modeling Vibration treatment Friable medium
2010/2/10
Purpose: The objective of this work is to develop the principles of the theoretical investigation of vibration volumetric treatment for the surfaces of articles manufactured by friable dry medium and ...
Anisotropy of physical properties injection moulded parts and its analysis
Engineering polymers Mechanical properties Injection moulding
2010/2/10
Purpose: Anisotropy of physical properties in injection mouldings is a phenomenon commonly performing and very difficult to avoid. However in some cases for its size occurring of diversity of the prop...
Modified design for the poppet in check valves
Computational mechanics Computational Fluid Dynamics (CFD) Finite Element Method (FEM)
2010/2/10
Purpose: of this paper: The check valve, which is composed of sleeve, connector and poppet, is the one direction valve that blocks fluid flow. The sleeve and connector are constrained and fixed. But t...
Technology design of composite parts
Composites Plastic forming Manufacturing technology management Artificial neural networks
2010/2/22
Purpose: Purpose of this paper is to optimize the design of the manufacturing technology process of large composite plastic products. One of the key problems is how to integrate computer-based product...