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考虑配气机构冲击的气缸盖结构动力学仿真分析

杨松林 向建华

杨松林, 向建华. 考虑配气机构冲击的气缸盖结构动力学仿真分析[J]. 机械科学与技术, 2017, 36(6): 841-847. doi: 10.13433/j.cnki.1003-8728.2017.0604
引用本文: 杨松林, 向建华. 考虑配气机构冲击的气缸盖结构动力学仿真分析[J]. 机械科学与技术, 2017, 36(6): 841-847. doi: 10.13433/j.cnki.1003-8728.2017.0604
Yang Songlin, Xiang Jianhua. Study on Dynamic Simulation of Cylinder Head Considering Valve-train Impact[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(6): 841-847. doi: 10.13433/j.cnki.1003-8728.2017.0604
Citation: Yang Songlin, Xiang Jianhua. Study on Dynamic Simulation of Cylinder Head Considering Valve-train Impact[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(6): 841-847. doi: 10.13433/j.cnki.1003-8728.2017.0604

考虑配气机构冲击的气缸盖结构动力学仿真分析

doi: 10.13433/j.cnki.1003-8728.2017.0604
基金项目: 

国防基础科研项目(DEDP0103)资助

详细信息
    作者简介:

    杨松林(1990-),硕士研究生,研究方向为内燃机零部件结构刚强度,15210616184@163.com

    通讯作者:

    向建华(联系人),副教授,博士,xiangjh@bit.edu.cn

Study on Dynamic Simulation of Cylinder Head Considering Valve-train Impact

  • 摘要: 配气机构的冲击作用会对柴油机气缸盖的应力场分布产生较大的影响。首先建立了某柴油机配气机构的多体动力学仿真模型,获得气门底座对于气缸盖的气门座圈的循环冲击载荷。在此基础上,综合考虑热应力及循环机械应力和冲击压力作用,对含气缸盖、机体、冷却水套等的组合结构模型进行瞬态动力学响应分析,对比分析了配气机构循环冲击对气缸盖的结构强度的影响大小。结果表明:相比于恒定等效的配气底座冲击作用力的加载,采用瞬态动力学并考虑变化配气机构底座冲击作用影响下得到的气缸盖应力场分布,气缸盖进排气门座圈处的应力值明显增加,应力值增幅可达到10%左右;火力面处的应力值也会增加,局部应力增幅可以达到30 MPa;同时,气缸盖的整体应力场也出现了不同程度的增加。
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出版历程
  • 收稿日期:  2015-12-03
  • 刊出日期:  2017-06-05

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