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Forces & Structures . Types of Structures. 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).
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Forces & Structures Types of Structures
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)
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
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
