摘要发动机应用电磁驱动气门可以灵活地调节配气定时和气门升程,减小泵气损失,全面提升发动机性能。本课题以应用动圈式电磁直线执行器的电磁驱动气门为研究对象,对其动圈进行结构有限元分析,进一步指导电磁驱动气门的设计。因此,电磁直线执行器的强度对于电磁驱动气门的性能就显得十分重要。本课题主要完成了下述工作:62924
1运用SolidWorks绘图软件对电磁直线执行器动圈进行了三维建模。
2对动圈进行了受力分析,确立有限元分析的边界条件。
3通过ANSYS软件仿真归纳出影响动圈强度的敏感参数,并对现有电磁直线执行器动圈进行强度校核。
4对动圈的结构进行改进,并给出方案。
毕业论文关键词:电磁驱动气门,电磁直线执行器,三维建模,有限元分析,强度校核
毕业设计说明书(论文)外文摘要
Abstract Engine use valve actuator flexibility to adjust the valve timing and valve lift, reduce pumping losses and improve the overall engine performance.Depending on the finite element analysis(FEA),this paper discussed the structural characteristics of electromagnetic moving coil linear actuator which applied in the EMVA.This paper can guide the EMVA design in further.Therefore, the strength of the electromagnetic linear actuator is very important for valve actuator performance .This paper mainly has the following research work done:
Ⅰ.The three-dimensional model of electromagnetic linear actuator dynamic was established by SolidWorks Drawing Software.
Ⅱ.The finite element model of electromagnetic linear actuator was established and its static analysis was carried out.
Ⅲ. The sensitive parameters which is influenced the strength ofelectromagnetic linear actuator dynamic was carried out by ANSYS.
Ⅳ.The proposal to improve the dynamic structure was put forward.
Key word: EMVA, electromagnetic linear actuators, Three-dimensional modeling,FEA, strength check
目录
1 绪论 1
1.1研究的目的与意义 1
1.3课题研究内容及方法 4
1.3.1课题的研究内容 4
1.3.2课题的研究方法 4
2 有限元法与ANSYS简介 6
2.1 有限元法原理简介 6
2.2有限元法的特点 6
2.3 有限元法分析流程 7
2.4 ANSYS软件简介 8
3 电磁直线执行器动圈的有限元静力分析 10
3.1 动圈受力分析 10
3.2 有限元静力分析问题简化 11
3.3 电磁直线执行器动圈静力分析过程 11
3.3.1建立静力分析模型 11
3.3.2单元的选择 13
3.3.3材料的定义 15
3.3.4 网格的划分 16
3.3.5 定义边界条件和施加载荷 19
3.4 电磁直线执行器动圈静力分析结果 24
4 电磁直线执行器动圈改进 26
4.1电磁直线执行器动圈改进方案 26
4.11电磁直线执行器动圈结构改进