Mechanics Flashcards
(24 cards)
What are the different types of loads that can act on a structure?
The different types of loads that can act on a structure are dead loads, live loads, wind loads, snow loads, and seismic loads.
What is a beam?
A beam is a structural element that is designed to resist bending and carry loads.
What is statics?
Statics is the branch of mechanics that deals with the analysis of forces acting on physical systems at rest.
What is stress in engineering?
Stress in engineering is the internal force that resists deformation in a material.
What is strain in engineering?
Strain in engineering is the measure of deformation or displacement of a material in response to stress.
True or False: Dead loads are constant and permanent loads on a structure.
True
What type of load is caused by the weight of the structure itself?
Dead load
What type of load is caused by moving or temporary forces on a structure?
Live load
What type of load is caused by the force of the wind on a structure?
Wind load
What type of load is caused by the force of an earthquake on a structure?
Seismic load
What is the formula to calculate stress?
Stress = Force / Area
What is the formula to calculate strain?
Strain = Change in length / Original length
What is the relationship between stress and strain known as?
Stress-strain curve
What is the modulus of elasticity?
The modulus of elasticity is a material property that describes its ability to deform under stress.
What is the equation relating stress, strain, and modulus of elasticity?
Stress = Modulus of elasticity x Strain
What is the maximum stress a material can withstand without permanent deformation called?
Yield stress
What is the factor of safety in engineering design?
The factor of safety is a design factor that accounts for uncertainties and variations in material properties.
What is the bending moment in a beam?
The bending moment in a beam is the internal moment that causes bending deformation.
What is the shear force in a beam?
The shear force in a beam is the internal force that causes shearing deformation.
What is the equation to calculate bending moment?
Bending Moment = Force x Distance
What is the equation to calculate shear force?
Shear Force = Rate of change of Bending Moment
What is the neutral axis in a beam?
The neutral axis in a beam is the axis where there is no stress or strain.
What is the formula to calculate deflection in a beam?
Deflection = (Force x Distance^3) / (3 x Modulus of elasticity x Moment of inertia)
What is the equation to calculate maximum bending stress in a beam?
Maximum Bending Stress = (Bending Moment x Distance to Neutral Axis) / Section Modulus
