POE Unit 2 Concept Review

Front

What occurs when a force is pulling a member apart?

Back

Tension

Front

What supplies one reaction force, perpendicular to a surface in a truss?

Back

Roller

Front

In the context of calculating strain in a wire, what does ΔL refer to?

Back

The change in length of the wire.

Front

What does Point A represent on the stress-strain curve?

Back

Elastic Limit

Front

What does a vector have?

Back

Magnitude and direction.

Front

What is the definition of compression in structural engineering?

Back

A force that pushes or pulls a member together.

Front

What is the definition of shear in structural engineering?

Back

A force that causes parts of a material to slide past each other.

Front

What is the ultimate tensile strength?

Back

The maximum stress a material can withstand while being stretched or pulled before necking.

Front

What is necking in the context of material science?

Back

The localized reduction in cross-section of a material under tensile stress.

Front

What is the modulus of elasticity?

Back

A measure of a material's ability to deform elastically (i.e., non-permanently) when a force is applied.