Using FEA as a Pedagogical Tool for Teaching Machine Component Design
Using FEA as a Pedagogical Tool for Teaching Machine Component Design
复制标题
使用 FEA 作为机器组件设计教学工具
DOI：
10.18260/1-2--31205
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
W. Reffeor
中科院分区：
文献类型：
--
作者：
W. Reffeor
在过去的50年里，机械设计教科书不断更新，以包括当前技术的说明和最新的标准。然而，目前的技术还没有被纳入教材的教学。具体来说，在大多数文本中有一章涉及基本的有限元分析（FEA）理论。然而，FEA并不用于教授机器设计的概念。相反，机械设计的内容并没有用来提高学生的有限元分析技能。这两个主题是天然的伙伴，可以用来加强这两个主题的学习。本文提出的教学方法旨在弥合这些差距。有限元分析已被应用于机器设计的许多方面，以更好地了解机器元件之间的相互作用。尽管有限元分析在工业上通常用于机械元件的选择和设计，但目前很少将这种研究纳入机械设计的教学中。此外，该工具本身并不用于在课堂上探索机器元素之间的复杂交互，以使学生更好地理解交互，并更好地在复杂系统中实现这些元素。虽然在许多学校，学生学习有限元分析背后的理论和如何使用它，他们很少有机会将所获得的知识应用到“真实的生活”的场景。使用有限元分析来教授机械设计提供了一个理想的机会，让学生了解有限元分析结果的解释。开发了五个模块以鼓励使用FEA探索机器元件：轴的模态分析，轴的应力和变形分析，轴上组件的压配合，改变节距和压力角对正齿轮中接触和弯曲应力的影响，以及衬垫与非衬垫螺栓连接。每个模块包括理论背景部分，模型设置部分和学生通过探索模拟结果回答的问题列表。此外，通过这项研究开发的模块是互动的，需要学生的探索。它们与其他学习活动沿着可以很容易地用来鼓励更活跃的课堂。由于有限元分析与机械设计II在大学同时教授，学生们学习使用ANSYS软件和有限元分析理论与机械设计内容。
Over the last 50 years, Machine Design textbooks have been continually updated to include instruction on current technology and to include the latest standards. However, current technology has not been incorporated in the teaching of the material. Specifically, there is a chapter in most texts that addresses basic finite element analysis (FEA) theory. However, FEA is not used to teach the concepts of machine design. Conversely, the content of machine design is not used to enhance students’ FEA skills. These two topics are natural partners and can be used to enhance the learning of both topics. The pedagogy presented in this paper seeks to bridge these gaps. FEA has been applied to many aspects of machine design to better understand the interplay between machine elements. Very little of this research is currently incorporated in the teaching of machine design, even though FEA is commonly used in industry for machine element selection and design. Additionally, the tool itself is not used to explore complex interactions between machine elements in the classroom to allow students to better understand the interactions and have a better feel for implementing these elements in complex systems. Although in many schools, students learn the theory behind FEA and how to use it, they get little opportunity to apply the knowledge gained to “real life” scenarios. Using FEA to teach machine design provides an ideal opportunity to expose students to interpretation of FEA results. Five modules were developed to encourage exploration of machine elements using FEA: Modal Analysis of a Shaft, Stress and Deflection Analysis of a Shaft, Press Fit of a Component on a Shaft, Effect of Changing Pitch and Pressure Angle on Contact and Bending Stresses in a Spur Gear, and Gasketed vs. Non-gasketed Bolted Joints. Each module includes a theoretical background section, a model set-up section and a list of questions for the student to answer by exploring the results of their simulations. Additionally, the modules developed through this research are interactive and require student exploration. They, along with other learning activities could easily be used to encourage a more active classroom. As Finite Element Analysis is taught concurrently with Machine Design II at University, students were learning to use ANSYS software and the FEA theory simultaneously with machine design content.