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Forces & Structures PowerPoint Presentation
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Forces & Structures

Forces & Structures

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Forces & Structures

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  1. Forces & Structures Types of Structures

  2. Shell Structure • Has a solid surface and a hollow interior • Ex. Egg shells, egg cartons, domed roofs, helmets, shoeboxes • Curved structure are stronger than shell structures with surfaces • Strong shells can be made from weak materials (ex. eggshells)

  3. Shell Structure

  4. Frame Structure • Formed from a combination of parts • None of the components are capable of supporting the load by itself, but when they are fastened together they support and strengthen each other • Ex. Goal posts, skeleton, hydro towers, girders on a bridge • Flexible and are usually better at handling torsion and tension forces • Less material and lighter than solid structures • May require more work to construct

  5. Frame Structure

  6. Solid Structure • Has only one part and contain no hollow spaces • Ex. Walls, dams, concrete pillars • Strength depends on bulk = they resist forces either because they are too massive to move or because the materials can resist compression • Generally the thicker the structure, the stronger it is • Also known as (AKA) mass structures • Main use of solid structures is as supports

  7. Solid Structures