本文主要研究内容
作者王子阳（2019）在《常温和低温自润滑轴承复合材料性能研究与仿生轴承设计研究》一文中研究指出：随着科学技术的快速发展,特别是特殊工况下工作的特殊机械结构,一些在低温、高低速等极苛刻工况条件下工作的轴承如风力发电机组,其油脂润滑有时会失效,只能依靠轴承中自润滑材料提供的转移膜为轴承正常工作提供润滑。目前我国正加快研制的自主设计的大风力发电机组等高、尖、精技术发展都对长寿命、高稳定性自润滑复合材料提出迫切的要求。因此,开发和研制新型的符合特殊工况的自润滑材料并研究其复合材料自润滑摩擦磨损机理对解决适应低温条件下轴承的延寿及提高可靠性问题具有极其重要的价值和意义。本文分析了在常温和低温两种条件下轴承自润滑复合材料的主要摩擦磨损机理,为进一步设计和研究自润滑复合材料提供依据。研究了超高分子量聚乙烯(UHMWPE)基自润滑复合材料填料配比、成型工艺、压制条件和烧结温度等,达到高效制备复合材料的目的。在常温环境下,考察了增强填料和润滑填料等填料含量对复合材料摩擦磨损性能、力学性能、热性能的影响。在-60℃环境下,测试UHMWPE+CF+POB+Cu复合材料摩擦磨损性能,研究复合材料磨损表面和对摩面表面,并探究其摩擦机理。常温环境下,研究UHMWPE基体添加增强相碳纤维(CF)摩擦磨损性能,碳纤维增强UHMWPE复合材料摩擦因数的变化范围在0.12~0.30之间变化,同时磨损率也较高,优选出碳纤维增强UHMWPE复合材料摩擦磨损性能最优值,最优配比为UHMWPE+15%CF复合材料;当聚苯酯(POB)填料添加到UHMWPE+15%CF复合材料中时,磨损率进一步减少,在UHMWPE+15%CF+15%POB复合材料中添加纳米铜(Cu)颗粒磨损率最小,得到最低磨损率复合材料是UHMWPE+15%CF+15%POB+12%Cu复合材料,其复合材料磨损率大概为纯UHMWPE的1/16。同时考察了UHMWPE+15%CF+15%POB添加石墨时复合材料的摩擦磨损性能,虽然将摩擦因数降低了,但是磨损率有所增加。在力学性能方面,POB、石墨和纳米Cu颗粒均降低了复合材料的冲击性能;在热性能方面研究,添加纳米Cu颗粒和石墨复合材料热焓值有提升,促进结晶度的提升。在导热率方面,添加纳米Cu颗粒和石墨可明显改善其复合材料导热性能。同时,本文测试了在常温环境下不同载荷和转速对复合材料的影响,研究结果表明,其中转速对复合材料磨损率的影响大于压力对复合材料磨损率的影响;复合材料的摩擦因数随载荷的增加而减少,复合材料的摩擦因数随转速的增加而增加。研制了低温摩擦磨损试验机,测试了5种UHMWPE复合材料在-60℃低温环境下的摩擦性能。在-60℃环境中,随纳米Cu颗粒含量提高,纤维增强超高分子量聚乙烯复合材料与对摩面瞬态摩擦因数也越稳定。低温环境下复合材料磨损率低于常温下复合材料磨损率;在低温环境中,随纳米Cu颗粒含量提高,复合材料磨损率越低,其主要磨损机理为疲劳磨损;在-60℃低温环境下,对比了在不同载荷和不同转速时,UHMWPE+CF+POB+12%Cu复合材料的磨损率。研究表明,载荷从100N增长到300N,超高分子量聚乙烯复合材料的摩擦因数随载荷的增加而减小,复合材料的磨损率随载荷的增加而增加;随着转速从100r/min增加到300r/min其摩擦因数有上升趋势,UHMWPE+CF+POB+12%Cu复合材料的磨损率和磨损量随转速的增加先减小后增加;在-60℃低温环境下,转速相对于载荷对磨损率的影响也是最大的。利用仿真模拟对普通自润滑轴承和仿生自润滑轴承在相同载荷情况下轴承的承载能力进行对比与计算。在静态载荷作用下,仿生自润滑轴承von-mises最大应力值小于普通自润滑轴承,仿生孔槽排布方式和孔槽孔径均影响自润滑轴承承载能力;在动态载荷作用下,仿生自润滑轴承von-mises最大应力值最小,承压状态最优,因而具有较优的承载能力。最终确定了有着良好受力状态的镶嵌槽为仿生结构模型为最终轴承结构。通过校核,其仿生自润滑轴承最优排布为30°排列外接圆为10mm的仿生六边形为镶嵌槽。
Abstract
sui zhao ke xue ji shu de kuai su fa zhan ,te bie shi te shu gong kuang xia gong zuo de te shu ji xie jie gou ,yi xie zai di wen 、gao di su deng ji ke ke gong kuang tiao jian xia gong zuo de zhou cheng ru feng li fa dian ji zu ,ji you zhi run hua you shi hui shi xiao ,zhi neng yi kao zhou cheng zhong zi run hua cai liao di gong de zhuai yi mo wei zhou cheng zheng chang gong zuo di gong run hua 。mu qian wo guo zheng jia kuai yan zhi de zi zhu she ji de da feng li fa dian ji zu deng gao 、jian 、jing ji shu fa zhan dou dui chang shou ming 、gao wen ding xing zi run hua fu ge cai liao di chu pai qie de yao qiu 。yin ci ,kai fa he yan zhi xin xing de fu ge te shu gong kuang de zi run hua cai liao bing yan jiu ji fu ge cai liao zi run hua ma ca mo sun ji li dui jie jue kuo ying di wen tiao jian xia zhou cheng de yan shou ji di gao ke kao xing wen ti ju you ji ji chong yao de jia zhi he yi yi 。ben wen fen xi le zai chang wen he di wen liang chong tiao jian xia zhou cheng zi run hua fu ge cai liao de zhu yao ma ca mo sun ji li ,wei jin yi bu she ji he yan jiu zi run hua fu ge cai liao di gong yi ju 。yan jiu le chao gao fen zi liang ju yi xi (UHMWPE)ji zi run hua fu ge cai liao tian liao pei bi 、cheng xing gong yi 、ya zhi tiao jian he shao jie wen du deng ,da dao gao xiao zhi bei fu ge cai liao de mu de 。zai chang wen huan jing xia ,kao cha le zeng jiang tian liao he run hua tian liao deng tian liao han liang dui fu ge cai liao ma ca mo sun xing neng 、li xue xing neng 、re xing neng de ying xiang 。zai -60℃huan jing xia ,ce shi UHMWPE+CF+POB+Cufu ge cai liao ma ca mo sun xing neng ,yan jiu fu ge cai liao mo sun biao mian he dui ma mian biao mian ,bing tan jiu ji ma ca ji li 。chang wen huan jing xia ,yan jiu UHMWPEji ti tian jia zeng jiang xiang tan qian wei (CF)ma ca mo sun xing neng ,tan qian wei zeng jiang UHMWPEfu ge cai liao ma ca yin shu de bian hua fan wei zai 0.12~0.30zhi jian bian hua ,tong shi mo sun lv ye jiao gao ,you shua chu tan qian wei zeng jiang UHMWPEfu ge cai liao ma ca mo sun xing neng zui you zhi ,zui you pei bi wei UHMWPE+15%CFfu ge cai liao ;dang ju ben zhi (POB)tian liao tian jia dao UHMWPE+15%CFfu ge cai liao zhong shi ,mo sun lv jin yi bu jian shao ,zai UHMWPE+15%CF+15%POBfu ge cai liao zhong tian jia na mi tong (Cu)ke li mo sun lv zui xiao ,de dao zui di mo sun lv fu ge cai liao shi UHMWPE+15%CF+15%POB+12%Cufu ge cai liao ,ji fu ge cai liao mo sun lv da gai wei chun UHMWPEde 1/16。tong shi kao cha le UHMWPE+15%CF+15%POBtian jia dan mo shi fu ge cai liao de ma ca mo sun xing neng ,sui ran jiang ma ca yin shu jiang di le ,dan shi mo sun lv you suo zeng jia 。zai li xue xing neng fang mian ,POB、dan mo he na mi Cuke li jun jiang di le fu ge cai liao de chong ji xing neng ;zai re xing neng fang mian yan jiu ,tian jia na mi Cuke li he dan mo fu ge cai liao re han zhi you di sheng ,cu jin jie jing du de di sheng 。zai dao re lv fang mian ,tian jia na mi Cuke li he dan mo ke ming xian gai shan ji fu ge cai liao dao re xing neng 。tong shi ,ben wen ce shi le zai chang wen huan jing xia bu tong zai he he zhuai su dui fu ge cai liao de ying xiang ,yan jiu jie guo biao ming ,ji zhong zhuai su dui fu ge cai liao mo sun lv de ying xiang da yu ya li dui fu ge cai liao mo sun lv de ying xiang ;fu ge cai liao de ma ca yin shu sui zai he de zeng jia er jian shao ,fu ge cai liao de ma ca yin shu sui zhuai su de zeng jia er zeng jia 。yan zhi le di wen ma ca mo sun shi yan ji ,ce shi le 5chong UHMWPEfu ge cai liao zai -60℃di wen huan jing xia de ma ca xing neng 。zai -60℃huan jing zhong ,sui na mi Cuke li han liang di gao ,qian wei zeng jiang chao gao fen zi liang ju yi xi fu ge cai liao yu dui ma mian shun tai ma ca yin shu ye yue wen ding 。di wen huan jing xia fu ge cai liao mo sun lv di yu chang wen xia fu ge cai liao mo sun lv ;zai di wen huan jing zhong ,sui na mi Cuke li han liang di gao ,fu ge cai liao mo sun lv yue di ,ji zhu yao mo sun ji li wei pi lao mo sun ;zai -60℃di wen huan jing xia ,dui bi le zai bu tong zai he he bu tong zhuai su shi ,UHMWPE+CF+POB+12%Cufu ge cai liao de mo sun lv 。yan jiu biao ming ,zai he cong 100Nzeng chang dao 300N,chao gao fen zi liang ju yi xi fu ge cai liao de ma ca yin shu sui zai he de zeng jia er jian xiao ,fu ge cai liao de mo sun lv sui zai he de zeng jia er zeng jia ;sui zhao zhuai su cong 100r/minzeng jia dao 300r/minji ma ca yin shu you shang sheng qu shi ,UHMWPE+CF+POB+12%Cufu ge cai liao de mo sun lv he mo sun liang sui zhuai su de zeng jia xian jian xiao hou zeng jia ;zai -60℃di wen huan jing xia ,zhuai su xiang dui yu zai he dui mo sun lv de ying xiang ye shi zui da de 。li yong fang zhen mo ni dui pu tong zi run hua zhou cheng he fang sheng zi run hua zhou cheng zai xiang tong zai he qing kuang xia zhou cheng de cheng zai neng li jin hang dui bi yu ji suan 。zai jing tai zai he zuo yong xia ,fang sheng zi run hua zhou cheng von-miseszui da ying li zhi xiao yu pu tong zi run hua zhou cheng ,fang sheng kong cao pai bu fang shi he kong cao kong jing jun ying xiang zi run hua zhou cheng cheng zai neng li ;zai dong tai zai he zuo yong xia ,fang sheng zi run hua zhou cheng von-miseszui da ying li zhi zui xiao ,cheng ya zhuang tai zui you ,yin er ju you jiao you de cheng zai neng li 。zui zhong que ding le you zhao liang hao shou li zhuang tai de rang qian cao wei fang sheng jie gou mo xing wei zui zhong zhou cheng jie gou 。tong guo jiao he ,ji fang sheng zi run hua zhou cheng zui you pai bu wei 30°pai lie wai jie yuan wei 10mmde fang sheng liu bian xing wei rang qian cao 。
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论文作者分别是来自吉林大学的王子阳，发表于刊物吉林大学2019-06-25论文，是一篇关于自润滑轴承论文,摩擦磨损性能论文,超高分子量聚乙烯复合材料论文,碳纤维论文,聚苯酯论文,纳米铜颗粒论文,吉林大学2019-06-25论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自吉林大学2019-06-25论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：自润滑轴承论文; 摩擦磨损性能论文; 超高分子量聚乙烯复合材料论文; 碳纤维论文; 聚苯酯论文; 纳米铜颗粒论文; 吉林大学2019-06-25论文;