______ is the ability of material to resist permanent change of shape caused by an external force.
举一反三
- 中国大学MOOC: When a body is caused to change its shape, the distorting force is proportional to the amount of the change, __________ the elastic limit is not exceeded.
- Which of the following is not an external force of change?
- The magnitude of the internal force of a bar depends on not only the external force but also the shape of its cross section. A: 正确 B: 错误
- When member is subjected to the eccentric loads, the wrong description of neutral axis is ( ). A: The position of the neutral axis is independent of external forces and eccentricity B: The neutral axis and the point of the external force are on opposite sides of the cross section centroid respectively C: The neutral axis is related to the shape and size of the section D: The closer the external force point is to the centroid, the farther the neutral axis is from the centroid
- The marketplace is an external force of change.