弧面衬套式活塞销优化分析
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摘要
为了提高弧面衬套式活塞销的寿命,降低活塞销座应力集中,利用有限元法与正交试验法相结合的方式对弧面衬套式活塞销进行优化。建立以活塞销台阶孔圆柱内径d以及两端圆柱孔长度l为变量,活塞销最大应力值为目标的正交试验,同时考虑接触应力与热应力,求得弧面衬套式活塞销结构优化最佳参数:d=14.5 mm,l=8 mm。对常见活塞销材料进行研究,运用有限元仿真分析方法对优化结果进行检验,结果表明,材料对弧面衬套式活塞的影响较小。优化后的弧面衬套式活塞销降低了活塞销座与活塞销的应力,极大地提高了弧面衬套式活塞的寿命。
In order to improve the lifetime of arc surface bushing piston pin and reduce the stress concentration of piston pin seat, the arc surface bushing piston pin was optimized with the finite element analysis method and orthogonal test method. The orthogonal experiment was established with the piston pin step bore d and cylindrical hole length l as variables and the largest stress value of piston pin as the goal. By considering the contact and thermal stress, the optimal parameters of arc surface bushing piston pin structure were acquired with d=14.5 mm and l=8 mm. In addition, the common materials of piston pin were further studied and the optimized results were verified with the finite element method. It was found that the material had little effect on the bushing piston. Accordingly, the optimized piston pin reduced the stress concentration of piston pin seat and piston pin, which improved the lifetime of piston pin greatly.Key words:
In order to improve the lifetime of arc surface bushing piston pin and reduce the stress concentration of piston pin seat, the arc surface bushing piston pin was optimized with the finite element analysis method and orthogonal test method. The orthogonal experiment was established with the piston pin step bore d and cylindrical hole length l as variables and the largest stress value of piston pin as the goal. By considering the contact and thermal stress, the optimal parameters of arc surface bushing piston pin structure were acquired with d=14.5 mm and l=8 mm. In addition, the common materials of piston pin were further studied and the optimized results were verified with the finite element method. It was found that the material had little effect on the bushing piston. Accordingly, the optimized piston pin reduced the stress concentration of piston pin seat and piston pin, which improved the lifetime of piston pin greatly.Key words:
引文
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[15] 刘世英,田小青,潘风敏.发动机活塞销孔座机械疲劳机理的研究[J].汽车工程,2014,36(1):57-60.
[16] Bates DC,吴旭初.90年代汽油机活塞和活塞销设计[J].国外内燃机,1992(3):12-16.
[17] 江伟.某新型发动机活塞连杆机构接触问题研究[D].沈阳:东北大学,2011.
[18] 张志勇.天然气发动机活塞温度测量及热负荷分析[D].武汉:华中科技大学,2005.
[19] 徐祖友,沈益.中国工具书大辞典续编[M].福州:福建人民出版社,1996:992-993.
[20] 何云信,黄荣辉,范毅,等.活塞销材料对活塞应力的影响[J].装备制造技术,2008(12):3-5.
[2] 阎绍泽, 陈鹿民,吴德隆,等.空间可展结构非线性动力学特性实验研究[J].宇航学报,2007,23(4):1-3.
[3] 柴油机设计手册编辑委员会.柴油机设计手册(上册)[M].北京:中国农业出版社,1984:56-57.
[4] 石小明,刘维娟,刘世英,等.活塞销孔表面微观划痕的原因分析及探讨[J].内燃机与动力装置,2015(1):74-77.
[5] 赵培秀.柴油机活塞销的失效分析及改进设计[D].宁波:宁波大学,2017.
[6] 郑永强.250型柴油机活塞销优化改进[J].轨道交通装备与技术,2015(3):31-34.
[7] 陈洋,何畏,马慧平,等.一种带圆弧面衬套的活塞:201520997241.8[P].2016-04-27.
[8] 陈洋.天然气发动机衬套式活塞的设计与研究[D].成都:西南石油大学,2017.
[9] 高秀华,郭建华.内燃机[M].北京:化学工业出版社,2006.
[10] 佟景伟,李林安,李鸿琦,等.在温度和机械载荷作用下活塞应力与变形的三维有限元分析[J].内燃机学报,1995,13(2):123-131.
[11] 童宝宏,张强.不同工况下柴油机活塞变形的三维有限元分析[J].农业工程学报,2010,26(9):159-163.
[12] 冯立岩,高希彦,夏惠民,等.8E160柴油机活塞组热负荷及机械负荷耦合分析[J].内燃机学报,2002,20(5):441-446.
[13] Hedhli T,Bessrour J.Thermomechanical behavior of the piston of an aircooled diesel engine in semi-permanent mode[J].International Journal of Automotive Technology,2016,17(6):947-958.
[14] 张继春,李兴虎,马凡华.CA488活塞的强度分析及结构改进[J].机械强度,2007,29(3):501-506.
[15] 刘世英,田小青,潘风敏.发动机活塞销孔座机械疲劳机理的研究[J].汽车工程,2014,36(1):57-60.
[16] Bates DC,吴旭初.90年代汽油机活塞和活塞销设计[J].国外内燃机,1992(3):12-16.
[17] 江伟.某新型发动机活塞连杆机构接触问题研究[D].沈阳:东北大学,2011.
[18] 张志勇.天然气发动机活塞温度测量及热负荷分析[D].武汉:华中科技大学,2005.
[19] 徐祖友,沈益.中国工具书大辞典续编[M].福州:福建人民出版社,1996:992-993.
[20] 何云信,黄荣辉,范毅,等.活塞销材料对活塞应力的影响[J].装备制造技术,2008(12):3-5.