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.
(1), (2), (3)
举一反三
- The simple Lame strain potential produces zero volume strain.
- The strain measured by the resistance strain gauge is A: the average strain in sensitive grid area B: the average strain in base area of the strain gauge C: the strain at the center of the sensitive grid D: the average strain at the two ends of the sensitive grid length
- What is the ratio of vertical stress to vertical strain for soil under zero lateral strain condition? A: Constrained modulus of compression B: Deformation modulus C: Young’s modulus D: Coefficient of compression
- By definition, strain tensor is given by the ( ) part of right displacement gradient and its transpose. A:
- Due to the pure bending deformation, the longitudinal ( ) strain varies ( ) from ( ) at the neutral axis to a maximum at the outer fibers of the beam. A: normal; linearly; zero B: shear; nonlinearly; zero C: shear; nonlinearly; zero D: shear; nonlinearly; zero
内容
- 0
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
- 1
Further strain
- 2
The synonym of "strain" is ______.
- 3
Normal strain cause a change in of the rectangular element, whereas the shear strain cause a change in its .
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变形的英文表达为 A: Deformation B: Stress C: Strain D: Displacement