Forces Involved

Question 1

When stretched, a material is in ___

Answer 1

tension

Question 2

The ability to withstand the tension is a measure of the ___ ____

Answer 2

tensile strength

Question 3

When the material is squeezed, it is subject to ___

Answer 3

compression

Question 4

The ability to withstand compression is a measure of the ____ ___

Answer 4

compressive strength

Question 5

If one face of a material is forced to slide against another, it is in ___

Answer 5

shear

Question 6

In a stressed-skin pressurised aircraft, the rivets holding the fuselage together are under ___ loads.

Answer 6

shear

Question 7

A structural member subjected to bending stresses is a ___

Answer 7

beam

Question 8

A structural member subjected to compression stresses is a ___

Answer 8

strut

Question 9

A structural member subjected to tension stresses is a ___

Answer 9

tie

Question 10

A beam supported at both ends, with a load at the centre, has its top in ___, its bottom in ___, with a shear at each end trying to slice it in half

Answer 10

compression, tension

Question 11

The maximum bending moments are ___ the load

Answer 11

underneath

Question 12

If the beam is supported at one end, the ___ is at the top, ___ at the bottom, and the supported end has a shear force

Answer 12

tension, compression

Question 13

A cantilever wing containing fuel has its highest bending moments at the ___

Answer 13

root

Question 14

Bending moments from lift are carried by the ___ and ___ skin surfaces and the spar

Answer 14

upper and lower

Question 15

The greatest stress will be during wing loading reversal on ___ ___ and ____

Answer 15

take off and landing

Question 16

The centre part of a strut is in the ___ ___, neither in tension nor compression, allowing the strut to be hollow

Answer 16

neutral plane

Question 17

Ties are often ___ or ___, rather than solid tubes, if they are only subject to tension or tensile loads

Answer 17

cables wires