Basic Statements 15/16

Question 1

The elastic buckling limit for a plate can be calculated by solving the plate equation

Answer 1

True

Question 2

The buckling coefficient, k, does not depend on the aspect ration of the plate, only on plate thickness and boundary conditions

Answer 2

False

Question 3

In the case of combined loading, one has to compare an equivalent buckling stress with another equivalent stress e.g. von Mises

Answer 3

True

Question 4

Buckling of a panel can only take place for one buckling mode

Answer 4

False

Question 5

The beams connected for stiffening of the plates have a certain torsional rigidity which gives some restraints to the plates. This restraint should be accounted for in the buckling calculation.

Answer 5

True

Question 6

The “main equation” for calculation of the elastic buckling stress of a stiffened panel can be derived using an energy-based method formulation.

Answer 6

True

Question 7

The contribution to the elastic buckling stress for a stiffened panel is a summary of contributions from the plate, the longitudinals and the transverses.

Answer 7

True

Question 8

Buckling of transversally stiffened plates should be investigated with respect to:

i) buckling of the plate between the transverses
ii) buckling that involves deformation of the transverses

Answer 8

True

Question 9

In buckling analyses of transversally stiffened plates, one wants the transverses to fail due to buckling before the plate fails.

Answer 9

False - We want to protect the stiffeners

Question 10

In buckling analyses of transversally and longitudinally stiffened plates, there is a design criterion that the elastic buckling stress of the panel should be larger than the elastic buckling stress of the longitudinal stiffeners.

Answer 10

True

Question 11

Tripping is defined as the state where the stiffeners rotate about the line of attachment to the plating

Answer 11

True