Basic Statements 6

Question 1

One of the largest difficulties with container ships is to obtain a design which has high torsion stiffness that leads to low stress responses in the structure during torsion loading conditions

Answer 1

True - Since they are long slender open cross-section type of body

Question 2

Vlasov theory postulates that normal and shear stresses occur in a structure when subjected to torsion loading conditions

Answer 2

True - Vlasov both, St Venant only shear stresses

Question 3

The twist centre is located always in the geometrical centre point of of gravity of a cross-section

Answer 3

False - Sometimes the twist centre can be outside the CS

Question 4

For a given cross-section, the derivative of the rate of twist determines the normal stress distribution in the cross-section

Answer 4

False - It derives the amplitude of the normal stress

Question 5

The warping shape function determines the magnitude of the normal stress in Vlasov theory

Answer 5

False - It determines the shape of the warping displacement

Question 6

The centre f twist is defined as the location of a cross-section where the resultant bending moments are zero and only pure torsion occurs

Answer 6

True - Complete opposite for Shear centre