Structures 1
Stress caused by 2 oppositely directed forces acting on a body, tending to FLATTEN it or REDUCE its length/thickness
Compression
Stress caused by 2 oppositely directed forces acting on a body, tending to STRETCH it.
Tension
Stress caused by 2 forces acting on a body, tending to FLEX it
Bending
Stress caused by 2 oppositely directed forces acting on a body, tending to TWIST it
Torsion
Stress caused by 2 oppositely directed forces acting on a body along very close lines of action, tending to CUT it
Shear
What is the name for the internal tensions that a body is subjected to when different forces act on it?
Stresses
What are the external influences that can deform a body, change its movement, or produce motion in a body at rest.
Forces or loads
The terms "force" and ______ can be used indistinctly.
Load
What is the word for the set of elements arranged in a way that is appropriate for supporting the weight of a body and maintaining its shape, despite external forces that may act on it?
Structure
What type of structure is a honeycomb, nest, or skeleton?
Natural structure
What are the 3 conditions a structure has to comply with?
1) strength, 2) stability, 3) rigidity
When you place a book on a bookshelf, what kind of stress does the shelf have?
Bending
What is the name for the horizontal elements that support the weight of the floors and ceilings in frame structures?
Beams
Many suspension bridges are held in place by ______, usually made from steel and attached to sturdy supports.
Stay cables
What is the main shape occurring in trussed structures?
Triangles
A skyscraper and bridge are examples of what kind of structures?
Artificial structures
What is an example of a mass structure?
Pyramids, walls, dams, etc.
What is an example of a trabeated structure?
Stonehenge, temples of Ancient Egypt and Greece, etc.
The Eiffel Tower in France is an example of which kind of structure?
Trussed structure
A car and airplane are examples of what kind of structures?
Laminar structures
When we sit in a chair, what kind of stress are the chair legs subjected to?
Compression
What is the word for a horizontal beam placed on vertical supports used to cover spaces?
Lintel
What is the name of the bridge that collapsed in the U.S.? (We saw the video in class)
Tacoma Narrows Bridge
What is the difference between an arch and a vault?
Arches are linear and vaults are superficial (created by multiple arches)
A key opening a lock is subjected to which kind of stress?
Torsion