共查询到19条相似文献,搜索用时 78 毫秒
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基于有限元弹性接触分析理论,利用MASTA有限元软件对某车床齿轮进行了齿面加载接触分析。仿真结果表明:齿轮最大接触应力出现在接触齿轮的齿面中部,齿轮在啮合过程中的接触应力呈现先增大再保持平稳波动后减小的趋势。分析结果显示相互啮合齿轮的齿面接触区域为椭圆形,且受压面的接触应力比受拉面的接触应力要大。 相似文献
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以81/2″MP1型牙轮钻头滚动轴承为研究对象,对常规直母线圆柱滚子与内圈滚道的接触状况进行了三维有限元数值模拟,采用网格自适应技术展现了端部几何边界突变处的奇异性,指出了最大法向接触应力和最大等效应力的分布区域。克服了以往类似数值模拟所存在的缺陷,为滚子轴承的承载性能预测和结构优化设计奠定了坚实基础。 相似文献
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以81/2″MP1型牙轮钻头滚动轴承为研究对象,对常规直母线圆柱滚子与内圈滚道的接触状况进行了三维有限元数值模拟,采用网格自适应技术展现了端部几何边界突变处的奇异性,指出了最大法向接触应力和最大等效应力的分布区域。克服了以往类似数值模拟所存在的缺陷,为滚子轴承的承载性能预测和结构优化设计奠定了坚实基础。 相似文献
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运用有限元和动力学分析方法,针对单圆弧PCE型离合器的接触状态进行了动、静力学分析;在Marc平台上建立了由楔块和内外环组成的PCE型离合器的三维有限元模型,通过分析,得到了各接触体的等效Mises应力、法向应力和接触变形,结果表明,单圆弧型离合器的接触应力和变形相对较大。通过Admas对PCE型离合器的动力学仿真,得到了离合器的楔合时间、楔入冲击力及稳态楔合力等参数。结果表明,单圆弧型离合器楔合时间长、楔入冲击力大、稳态楔合力大。由有限元和动力学计算的结果和解析法一致,证明了有限元和动力学模型的正确性。 相似文献
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由于电力机车上的触头牵引电器的损坏,会影响电力机车的正常运行,而接触电阻的大小可直接影响触头牵引电器的运行质量,根据自已多年工作经验,主要阐述一下接触电阻的型式、作用、触头接触电阻产生的原因及减少接触电阻的方法和影响接触电阻的因素。 相似文献
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HE Yi ZHANG Xiao-hui WANG Yong-ming LIU Feng-long 《材料研究与应用》2005,(3):399-404
The cladding preparation technology for the micro contact profile is investigated through the way of seam welding. The effects of the seam welding on different conditions including welding electrical current, welding time, electrode force and electrode material were contrasted through the way of metallographic structure, electron scanning, experiments of rectification and twist fatigue.The parameters of welding several kinds of materials were obtained. As a result, the qualified contact profile can be produced by making a control of the technical conditions: welding current, welding time, electrode force and electrode material. 相似文献
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The cladding preparation technology for the micro contact profile is investigated through the way of seam welding. The effects of the seam welding on different conditions including welding electrical current, welding time, electrode force and electrode material were contrasted through the way of metallographic structure, electron scanning, experiments of rectification and twist fatigue.The parameters of welding several kinds of materials were obtained. As a result, the qualified contact profile can be produced by making a control of the technical conditions: welding current, welding time, electrode force and electrode material. 相似文献
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1IntroductionAlong with the rapid development of electronic technology,micro composite electric contact profile isapplied widely to all kinds of electronic products such as relay switch,key press,digital switch,micro-switch,circuit recorder,controller,linker and so on[1].Micro composite electric contact profile is a newweak electricity contact material with several layers andtiny cross section area.Generally,the electric con-tact layer is made fromnoble metal materials.In a typical case,the co… 相似文献
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