Model Description This is a simple model that will demonstrate the use of zero force members (ZFM) in trusses. Wooden beams are attached with dowels to form a simple truss, which is acted on by an external force. The zero force members are identified by placing a load on a truss and then removing pins […]
Model Description This 3D model of a bridge is a model that is very close to a real representation of a bridge. It has a number of realistic features that cannot be shown with K’NEX or other simple structures. This demonstration should take 15-20 minutes. Engineering Principle Bridges are more than just trusses put together. […]
Model Description This is a simple demonstration to introduce the basic principles of truss behavior and analysis. It will show how the shape of a truss—and not necessarily its weight/material—determines its stability. A simple truss design will be used to show that triangles are the important stability shape used in trusses rather than squares or […]
Model Description This demonstration shows the simplicity of a truss. The equipment consists of a single triangle made of two rulers and string – forming a truss. The truss is held on two desks by students and given a load by another student. This shows the innate strength of the simple triangular shape used in […]
Model Description This simple pair of K’NEX models can demonstrate how trusses greatly increase the strength/stiffness of structures without adding much weight. The trusses are built out of K’NEX pieces and topped with construction paper to produce a roadway. Text books are used to load the trusses to demonstrate its strength to weight ratio. This […]