tecnología
TRANSCRIPT
- 1. STRUCTURES AND FORCES
2. TYPES OF STRUCTURES Frame Structures Shell Structures Arch Structures Mix and Match Mass Structures Suspension Structures 3. FRAME STRUCTURES
- Is the most common choice of structures.
4. These structures are composed of long elements. 5. SHELL STRUCTURES
- Are made of a thin outer layer.
6. They are like a strong and hard coat that maintains the require shape 7. ARCH STRUCTURES
- The Romans invented the arch.
8. The stone at the very top is called the keystone 9. MIX AND MATCH
- Different types of structures are combined
- The combination is a moree complex structure.
10. MASS STRUCTURES
- They are made of low quality of materials.
11. The structure is normally thick. 12. Advantage:Held in place by its own weight. 13. Disadvantage : Heavy need much material. 14. SUSPENSION STRUCTURES
- A suspension structure holds an element.
15. Are often best for bridges. 16. Good for covering a very large span. 17. TYPES OF UNIONS
- PERMANENT UNIONS :
18. They are meant for structures that will not needed to be disassembled. 19. Welding, rivets, glue...
- NON-PERMANENT UNIONS :
20. Are those designed to assemble and disassemble the element of structures . 21. Nuts, bolts, clamps, friction... 22. FORCES ON STRUCTURAL ELEMENTS
- Tensional strain
23. Compression forces 24. Shear strain 25. Torsion forces 26. Bending forces 27. TENSIONAL STRAIN
- Is the strain that causes an element to stretch
28. It can be due to forces 29. COMPRESSION FORCES
- They are those forces which causes an element to get squeezed or buckled
30. SHEAR STRAIN
- Shear forces act across a material in such a way they can force.
31. A good example are when we cut with the scissors 32. TORSION FORCES
- If we apply a turning force called torque at one end of an element and, if the element is fixed to a support at the other end the element twists
33. BENDING FORCES
- Act at an angle to a member making it bend
34. BY: Manuel Folgado and Ramn Barrabs