Terms in PSAD Flashcards
(21 cards)
Causes an abrupt change in shear
Concentrated loads
Causes an abrupt change in bending moment
Concentrated Couples
Is one that has nothing to do with spatial direction
Scalar Quantity
Is one that can be specified completely only if we provide both its magnitude (size) and direction
Vector Quantity
Or sum, of a number of vectors of a particular type is that single vector that would have the same effect as all the original vectors taken together
Resultant
Zero in length when vectors a and b point in the same, or opposite, direction and reach maximum length when vectors a and b are at right angles.
Cross Product
-Actual path covered by a body in any direction
- scalar quantity
-always positive
Distance
-Shortest path between the initial and final position of a body
-vector quantity
-can be positive, negative or zero
Displacement
Members that support loadings that are applied perpendicular to their longitudinal axis.
Beams
What do you call the retarding force acting opposite a body in motion
Kinetic Friction
Which structural member has the ratio of its unsupported height to its least lateral dimension of not less than 3 and is used primarily to support axial load
Column
What do you call the force which determines whether the body will be in equilibrium or will have a varying state of motion.
Resultant
Identify the principle used in equations related to the deformation of axially loaded materials: That the stress is proportional to the strain within the elastic region.
Hooke’s Law
Identify the principle used in equations related to the deformation of axially loaded materials: That in the deformation of axially loaded members, the ratio of the lateral to the longitudinal strain is constant.
Poisson’s Ratio
Identify the principle used in equations related to the deformation of axially loaded materials: That within the elastic range’ it is constant of proportionality that defines the linear relationship between stress and strain.
Young’s Modulus
Which term refers to the force generated by the body at rest.
Static
Which term refers to the force generated by the body at motion.
Dynamic
What is the term for the value beyond which the stress is no longer proportional to the strain.
Proportional limit
Materials which have the same composition at any point are described as
Homogeneous
Which property of material enables it to under large permanent strains before failure
Ductility
Which material has the same composition at any point?
Homogeneous
