详细介绍: 玻纤增强尼龙齿轮心动不如行动!
          可用于煤矿、岩体的加固。阻燃矿用材料颜龙等[59]研究了几种阻燃剂在矿用PE-LD中的阻燃及协效作用,并对酒精喷灯实验结果与其它测试结果之间的相关性进行了分析。结果表明,单种阻燃剂在相同添加量下,五溴甲苯阻燃PE-LD的LOI最高,并能通过酒精喷灯燃烧实验。溴氯和溴磷两种阻燃剂配合使用时,具有明显的协效作用,其中当溴氯和溴磷的质量比分别为1∶1和5∶2时,协同阻燃效果最好。PVC阻燃输送带类彦辉等[60]合成了一种含有长链烷    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具有热致液晶性,液晶织构为向列型,其清亮点高于分解温度,具有较宽的液晶态温度范围;LCI具有良好的热稳定性,初始分解温度可达296℃,热失重速率仅为0.71%/℃。TLCP/T–ZnOw抗静电复合材料华东理工大学[104]以热致液晶高分子(TLCP)为基体,四针状氧化锌晶须(T–ZnOw)为导电填料制备抗静电性T–ZnOw/TLCP复合材料。结果表明,T–ZnOw经偶联剂改性后,随其用量的增加,复合材料表面电阻率显著下降,热变形温度、拉伸强度、冲击      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玻纤增强尼龙齿轮心动不如行动!进行切齿试验,最后对齿轮传动进行了噪声测试。得到结论如下:1根据齿轮啮合原理和局部综合法理论,研究满足齿轮正确啮合的条件。由齿轮副的基本几何参数,计算出轮坯参数,结合啮合原理得到小轮加工参数,并推导出小轮齿面方程。根据局部综合法原理推导出大轮加工参数和齿面方程。利用TCA技术,用MATLAB编程计算出齿轮接触路径和传动误差,验证了齿轮副加工参数计算的正确性。2根据齿面方程和加工参数,用MATLAB编程计算出齿面三                    升运输系统中使用的铸铁地辊、橡胶地辊、钢地辊等在使用过程中除自身磨耗很大以外,对钢丝绳的磨损也极严重。而采用MC尼龙地辊后,明显减轻了钢绳的磨损,使钢丝绳的使用寿命延长了50%~100%。5建筑施工领域利用MC尼龙优良的力学性能和耐候性,可以制造窗框缓冲撑挡、门滑轮、窗帘导轨滑轮等;利用MC尼龙的耐磨性和自润滑性,用来制造自动扶梯栏杆、自动门横栏和升降机零件等。在曳引式电梯中,采用低弹性模量MC尼龙制作的电梯导                    玻纤增强尼龙齿轮心动不如行动!大多采用的是实验的方法或理论解析计算的方式,对人力和物力耗费较大。在国内外新的形势下,随着大型计算机服务器的使用,同时各类有限元计算分析软件也得到了很好的发展和应用,使得学者们越来越偏向于运用有限元法来对齿轮强度有影响的各因素在计算分析中进行考虑由于本文所研究对象MC尼龙齿轮不同于传统金属的斜齿轮,齿轮使用塑料作为材料而不是金属,以致于国内外对塑料斜齿轮传动啮合性能的研究都很少。由于本文主要应用ANSY   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种方法可以得到接触问题的一般规律,及问题的解析解答等,在一定程度上有其应用领域,但是这种方法对那些几何形状比较复杂的物体的求解将十分困难,它只能对一些简单的物体进行求解,这个弱点导致其应用范围十分有限。目前,有限差分法、边界元法和有限元法[68],这三种方法是目前用于齿轮工程实际的三种数值算法。有限差分法直接求解基本方程以及和基本方程相对应的定解条件的近似值,然而当需要求解的模型的几何形状变得很复杂时玻纤增强尼龙齿轮心动不如行动! |