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首页> 外文会议>40th ASEE/IEEE Frontiers in Education Conference >Work in progress — 2D paper trusses as a mechanism for teaching K12 fundamental STEM topics
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Work in progress — 2D paper trusses as a mechanism for teaching K12 fundamental STEM topics

机译：正在进行的工作-2D纸架作为教授K12基本STEM主题的机制

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Louisiana Tech University in partnership with three local high schools has recently developed NASA-Threads, a high school curriculum that integrates engineering, mathematics, and physics. The curriculum uses hands-on projects that develop student ability to solve realistic multiple-step problems and bring excitement into the classroom. One of the projects implemented in the “Work and Mechanics” portion of the curriculum involves the design, fabrication and testing of a two dimensional (2D) paper truss. Tensile truss members are made of dogbone-shaped manila folder strips, compressive specimens are made from paper mat board, and joints are held together with aluminum screw posts. The truss geometry and testing configuration ensure that the truss will fail when the most heavily loaded tensile member reaches its breaking strength. Tensile testing of individual members prior to the design process provides the data needed for students to design a truss whose load carrying capacity can be accurately estimated. The 2D paper trusses are easy to fabricate when compared to other paper or wooden trusses and provide an excellent way to introduce high school students to structural mechanics.
机译：路易斯安那理工大学与三所本地高中合作，最近开发了NASA-Threads，这是一种融合工程，数学和物理的高中课程。该课程使用动手实践项目来培养学生解决现实中的多步骤问题并为课堂带来兴奋的能力。在课程的“工作和力学”部分中实施的项目之一涉及二维（2D）纸桁架的设计，制造和测试。拉伸桁架构件由狗骨形的马尼拉折叠夹条制成，抗压试样由纸垫板制成，并且接头通过铝制螺丝柱固定在一起。桁架的几何形状和测试配置可确保在承受最大载荷的抗拉构件达到其断裂强度时，桁架将失效。在设计过程之前，对各个成员进行拉伸测试，为学生设计桁架提供了所需的数据，其桁架的承载能力可以准确估算。与其他纸质或木质桁架相比，二维纸质桁架易于制造，并为将高中生介绍结构力学提供了极好的方法。

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