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moment, and in determining the linear motion - a unit dummy
force. The positive sign of the calculated displacement indicates
that the direction of movement coincides with the dummy unit
force or moment.

Questions for self-assessment

1. What internal power factors may occur in the cross-
section of the plane of curved beams?
2. How do you determine longitudinal and lateral forces
in any cross-sectional plane of curved beams?
3. How do you determine the bending moment in any
cross-sectional plane of curved beams?
4. How do you calculate the resultant uniformly
distributed load applied to the arc of arbitrary contour?
5. Write the differential equations of equilibrium for the
plane of curved beams.
6. Describe the characteristics of the diagrams of the
internal force factors, resulting in a flat shear beam.
7. How do you find the position of the neutral layer in a
plane curve beam of rectangular cross -section?
8. How do you find the position of the neutral layer in a
plane curve beam of circular cross -section?
9. How do you find the position of the neutral layer in
the plane curves of arbitrary cross-section of the
beam?
10. According to what law are normal stresses changing
on the height of the cross-sectional plane of curve
shear beam?
11. Draw the general view diagrams of the total normal
stresses in the cross section of the curved beam, action
bending moment and tensile strength.
12. Write and explain the formula for determining the
stresses in the cross section of curved beams.
13. Write the condition of strength for plane curved beam.
14. How can you calculate stresses of curved beams?
15. How do you calculate the displacement curves in
uneven bars?

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