internal forces

Question 1

compression

Answer 1

a force that acts along the longitudinal axis of a structural member and tends to shorten to the member

Question 2

tension

Answer 2

a force that tends to elongate the member

Question 3

shear

Answer 3

a force that tends to slide two contacting parts of a member past each other in opposite directions

Question 4

bending moment

Answer 4

a system of internal forces (compression and tension) whose resultant is a moment. this happens when the loads cause the member to bend