Which of the following factors contribute to the displacements of a material point?
A: Rigid-body translations
B: Rigid-body rotations
C: Strain deformations
D: None
A: Rigid-body translations
B: Rigid-body rotations
C: Strain deformations
D: None
举一反三
- Which of the following statements is correct ? (1) There are two types of strains, linear strain(ε) and shearstrain(γ). (2) Strain is dimensionless. (3) If all parts of the object are not deformed, the strain at all points in the body is zero. (4) If the strain of each point is zero, the object has no displacement.
- A body is said to be a rigid body, when it has perfectly definite shape and size. The distance between all points of particles of such a body do not change, while applying any force on it A: 正确 B: 错误
- The towers of a suspension bridge serve as a rigid framework to which the cables are attached.() A: boundary B: skeleton C: enclosure D: material
- Which of the following states should be checked as the normal service limit state. ( ) A: The structure is out of balance as a rigid body B: Partial damage that affects the durability C: Not suitable to continue to bear the load any more due to excessive plastic deformation D: The component loses stability
- The towers of a suspension bridge serve as a rigid framework to which the cables are attached. A: boundary B: B. skeleton C: C. enclosure D: D. material