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
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
举一反三
- Where does the axis must pass through if the moments of areas of section with respect to an axis is zero。（ ） A: Centroid B: Centroid of mass C: Center D: Any point
- For plane bending the characteristics of deformation are ( ). A: The cross section remains plane when bent; B: The axis after deformation is a plane curve; C: All external loads act on the same plane; D: The axis after deformation is in the same plane with the loading plane.
- （）loaded columns, where the loads are applied at any point on the column section, causing moments about both the x axis and y axis simultaneously
- The cross section of a straight beam remains plane when the beam deforms due to bending. This causes ( ) on one side of the beam and ( ) on the other side. The neutral axis is subjected to ( ) .? normal stress; shear stress; zero stress|tensile stress; compressive stress; zero stress|compressive stress; tensile stress; maximum normal stress|shear stress; normal stress; zero stress
- The section which is cross to optical axis of anisotropic mineral has no pleochroism and absorption.