机械设计制造及其自动化 L380Q-05003三缸曲轴的有限元分析 定稿

3.0 闻远设计 2023-07-15 52 4 2.14MB 29 页 50光币
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题 目 L380Q-05003 三缸曲轴有限元分析
摘要：曲轴是发动机最重要的零件之一，也是较难生产加工的零件之一。发动机
运行时，汽缸内的可燃性混合气体被引燃，易燃混合气体使活塞杆活动区域胀大，驱
使发动机活塞杆上下运动，然后活塞杆触碰的曲轴推动发动机轴，带动曲轴做旋转运
动。曲轴在应力和扭曲内应力下的作业前提非常极端，其硬度和使用寿命遭遇着巨大
的挑战。一旦曲轴发生疲劳破坏乃至破裂，它会毁坏发动机的其它构件，造成安全生
产事故，尤其是在发动机特性和稳定性层面。因此曲轴必需考虑抗压强度设计方案规
定才可以安裝和运作，L380Q-05003型三缸曲轴主要作为柴油发动机的发动机曲轴使
用，本文对L380Q-05003型三缸曲轴进行了有限元分析，分析其结构参数的合理性，
若分析结果显示不合格则可对曲轴的参数进行相应的优化设计，使其结构达到要求。
本文中主要是以L380Q-05003三缸发动机曲轴为研究对象。使用Solid Works三维
建模软件完成了L380Q-05003三缸发动机曲轴的三维建模，使用ANSYS workbench
完成了曲轴的静力学分析，获得了曲轴的移动和应力云图。与此同时，对曲轴开展模
态分析和刚度计算，可发现曲轴主轴及结构功能件去除局部模态，主模态频率范围为
400Hz~2000Hz之间。在实际工作过程中，要避开曲轴的模态频率，特别是一阶和二
阶频率。最后对曲轴进行谐响应分析得到位移结果分析与应力结果分析。最后得出结
论即：L380Q-05003三缸发动机曲轴的设计合理。
关键词：曲轴；有限元分析；受力分析；Solid Works；ANSYS
I
Finite Element Analysis of L380Q-05003 Three-Cylinder
Crankshaft
Major: Mechanical Design, Manufacturing and Automation
Student: Tang Wuji Supervisor: Liu Qinqin Yang Yanjun
Abstract: Crankshaft is one of the most important parts of an engine and one of the
more difficult parts to produce. When the engine is running, the flammable gas mixture in
the cylinder is ignited, and the flammable gas mixture expands the active area of the piston
rod, driving the piston rod of the engine to move up and down, and then the crankshaft
that the piston rod touches pushes the engine shaft and drives the crankshaft to rotate. .
T h e o p e r a t i n g c o n d i t i o n s o f c r a n k s h a f t s u n d e r s t r e s s a n d t o r s i o n a l i n t e r n a l s t r e s s a r e
extremely extreme, and their hardness and service life are met with great challenges. Once
the crankshaft suffers fatigue damage or even cracks, it will destroy other components of
t h e e n g i n e a n d c a u s e s a f e t y p r o d u c t i o n a c c i d e n t s , e s p e c i a l l y i n t e r m s o f e n g i n e
c h a r a c t e r i s t i c s a n d s t a b i l i t y . T h e r e f o r e , t h e c r a n k s h a f t m u s t c o n s i d e r t h e c o m p r e s s i v e
s t r e n g t h d e s i g n p l a n b e f o r e i t c a n b e i n s t a l l e d a n d o p e r a t e d . T h e L 3 8 0 Q - 0 5 0 0 3 t h r e e -
cylinder crankshaft is mainly used as the engine crankshaft of the diesel engine. In this
paper, the finite element analysis of the L380Q-05003 three-cylinder crankshaft is carried
out, and its structure is analyzed. The rationality of the parameters, if the analysis results
show unqualified, the parameters of the crankshaft can be optimized accordingly to make
the structure meet the requirements.
This paper mainly takes the crankshaft of L380Q-05003 three-cylinder engine as the
research objec t. The th ree-dimens iona l modeling of the cranksha ft of t he L380Q-05003
three-cylinder engine was completed by using Solid Works three-dimensional modeling
s o f t w a r e , a n d t h e s t a t i c a n a l y s i s o f t h e c r a n k s h a f t w a s c o m p l e t e d b y u s i n g A N S Y S
workbench, and the movement and stress nephogram of the crankshaft were obtained. At
the same time, by carrying out modal analysis and stiffness calculation of the crankshaft,
it can be found that the main modal and the structural functional parts of the crankshaft
have removed local modes, and the frequency range of the main mode is between 400Hz
and 2000Hz. In the actual working process, the modal frequencies of the crankshaft,
especially the first and second order frequencies, should be avoided. Finally, the harmonic
response analysis of the crankshaft is carried out to obtain the displacement result analysis
and the stress result analysis. The final conclusion is that the design of the crankshaft of
the L380Q-05003 three-cylinder engine is reasonable.
II
Key Words: crankshaft; finite element analysis; force analysis; Solid Works; ANSYS
III
摘要：

题目L380Q-05003三缸曲轴有限元分析摘要：曲轴是发动机最重要的零件之一，也是较难生产加工的零件之一。发动机运行时，汽缸内的可燃性混合气体被引燃，易燃混合气体使活塞杆活动区域胀大，驱使发动机活塞杆上下运动，然后活塞杆触碰的曲轴推动发动机轴，带动曲轴做旋转运动。曲轴在应力和扭曲内应力下的作业前提非常极端，其硬度和使用寿命遭遇着巨大的挑战。一旦曲轴发生疲劳破坏乃至破裂，它会毁坏发动机的其它构件，造成安全生产事故，尤其是在发动机特性和稳定性层面。因此曲轴必需考虑抗压强度设计方案规定才可以安裝和运作，L380Q-05003型三缸曲轴主要作为柴油发动机的发动机曲轴使用，本文对L380Q-05003...

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作者：闻远设计 分类：非标机械电气自动化 价格：50光币 属性：29 页 大小：2.14MB 格式：DOCX 时间：2023-07-15

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