APPLYING STATICS TO COMMUNITY EXAMPLES

机译：将统计信息应用于社区示例

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Most statics courses begin with a considerable amount of abstract discussion of forces and vectors. Since the mechanical engineering technology department's goal is to focus on practical, concrete instruction methods, the faculty has been working to expose students to more exercises that involve the practical application of statics to daily life. For the statics curriculum, a laboratory was developed that investigates the use of trusses in the surrounding community. Each truss is examined to determine its primary purpose, its type and any unique design features. Small groups discuss each example qualitatively (quantitative analysis of the forces in the truss is not performed) and then the whole class meets to compare the results. The trusses include the following: 1. Sherman Minton Bridge - Double arch truss. 2. K&I Railroad Bridge - Parker and Warren through trusses with a swing section and a cantilevered road deck parallel with the tracks. 3. Pedestrian Bridge - Pratt truss. 4. Pennsylvania Railroad Bridge - Combination of Parker through trusses over shipping lanes with Warren deck trusses. 5. Clark Memorial Bridge - Cantilever truss. Since each truss serves a similar transportation purpose, each truss is compared to the others to determine why its particular design was chosen. This paper describes each example and the effects the exercise had on student learning. This includes discussion of: increased interest by relating statics to daily experiences, experience with reverse engineering, practice identifying members in tension and compression, comparison of a standard truss with a cantilever truss bridge and recognition of changing design practices as technology changes over the years. Lastly is a description of the assessment, evaluation and planned improvements to the truss laboratory.

机译：大多数静力学课程都是从对力和向量的大量抽象讨论开始的。由于机械工程技术系的目标是专注于实用的具体教学方法，因此该学院一直在努力让学生进行更多的练习，这些练习涉及将静电实际应用于日常生活中。对于静力学课程，建立了一个实验室，研究周围社区使用桁架的情况。检查每个桁架以确定其主要用途，类型和任何独特的设计特征。小组对每个示例进行定性讨论（不对桁架中的力进行定量分析），然后全班同学开会比较结果。桁架包括：1. Sherman Minton桥-双拱形桁架。 2. K＆I铁路桥-派克和沃伦穿过桁架，其具有一个摆动部分和一个平行于轨道的悬臂式道路平台。 3.行人天桥-Pratt桁架。 4.宾夕法尼亚铁路桥-帕克通过在运输路线上的桁架与沃伦甲板桁架的组合。 5.克拉克纪念桥-悬臂桁架。由于每个桁架具有相似的运输目的，因此将每个桁架与其他桁架进行比较，以确定为什么选择其特定设计。本文介绍了每个示例以及该练习对学生学习的影响。其中包括以下方面的讨论：通过将静力学与日常经验相关联来增加兴趣，进行逆向工程的经验，练习确定受拉和受压的构件，将标准桁架与悬臂桁架桥进行比较以及随着技术的不断变化而认识到不断变化的设计实践。最后是对桁架实验室的评估，评估和计划改进的描述。

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来源
《American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20061105-10; Chicago,IL(US)》|2006年|P.445-449|共5页
会议地点 ChicagoIL(US)
作者
Joseph Francis Dues;
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作者单位

Purdue University Statewide Technology at New Albany 4201 Grant Line Rd New Albany, Indiana 47150 United States;

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会议组织
原文格式 PDF
正文语种 eng
中图分类科学发明、发现研究（创造学）;
关键词
statics; truss; bridge;

机译：静力学;桁架;桥梁;

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APPLYING STATICS TO COMMUNITY EXAMPLES

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