問題一覧
1
The elongation per unit length, which is termed ______ and denited by E, may be found by dividing the total elongation by the length, L.
Normal Strain
2
A material having a relatively large tensile strain up to the point of rupture.
Ductile Material
3
A material having a relatively small tensil strain up to the point of rupture.
Brittle material
4
An arbitrary strain of _____ is frequently taken as the dividing line between ductile material and brittle material
0.05 mm/mm
5
This linear relation between elongation and the axial force causing it is called:
Hooke's law
6
The quantity E, i.e, the ratio of the unit stress to the unit strain, is the modulus of elasticity of the material in tension, or as it is often called
Young's modulus
7
The maximum stress that may be developed during a simple tension test such that the stress is a linear function of strain
Proportional limit
8
The maximum stress that may be developed during a simple tension test such that there is no permanent or residual deformation when the load is entirely removed
Elastic limit
9
the region of the stress-strain curve extending from the origin to the proportional limit
is called
Elastic range
10
the region of the stress-strain curve extending from the proportional limit to the point of rupture is called
Plastic range
11
there is an increaase of strain with no increase in stress, is known as the ______ of the materials
Yield point
12
The maximum ordinate to the curve, is known either as the ______ of the material
Ultimate strength or the tensile strength
13
The ordinate on the stress-strain diagram after the maximum ordinate to the curve is called ____ of the material
Breaking strength
14
The work done on a unit volume of material, as a simple tensile force is gradually increased from zero to such a value that the proportional limit of the material is reached, is defined as
Modulus of resilience
15
The work done on a unit volume of material as a simple tensile force is gradually increased from zero to the value causing rupture is defined as
Modulus of toughness
16
The decrease in cross-sectional area from the original area upon fructure divided by the original area and multiplied by 100 is termed _____
percentage reduction in area
17
The increase in length of a bar after fracture divided by the initial length and multiplied by 100 is the percentage elongation. Both the percentage reduction in area and the percentage elongation measures the ________of a material.
Ductility
18
If a ductile material can be stress consideredably beyond the yield point without failure it is said to
______- This is true of many structural metals.
strain-harden
19
The ordinate to the stress-strain curve such that the material has a predetermined permanent deformation or "set" when the load is removed is called ______ of the material.
Yield strength
20
The rate of change of stress with respect to strain is known as the_____ of the material.
Tangent modulus
21
This is defined as the change of length per unit length of a straight bar subject to a temperature change of one degree and is usually denoted by a. The value of this coefficient is independent of the unit of length but does depend upon the temperature scale used.
Coefficient of linear expansion
22
The ratio of the strain in the lateral direction to that in the axial direction is defined as:
Poisson's ratio
23
If the values of all external forces which act on a body can be determined by the equation of static equilibrium alone, then the force system is ____
statically determinate
24
In many cases the forces acting on a body cannot be determined by the equation of statics alone because there are more unknown forces that there are equations of equilibrium. In such a case the force system is said to be _____
statically indeterminate
25
One with the same elastic properties (E, v) at all points in the body.
Homogeneous material
26
If a material does not posses any kind of elastic symmetry it is called ___
Anistropic or aelotropic
27
If the material has thress mutually perpendicular planes of elastic symmetry it is said to be ___
Orthotropic
28
Modern filament-reinforced ______ are excellent examples of anistropic substances
composite materials
29
The ability of the material to absorb energy in the plastic range
Toughness
30
The ability of the material to absorb energy in the elastic range
Resilience
31
The term which refers to the ability of a material to deform in the plastic range without breaking
Ductility
32
It is the point through which the resultant of the resistance to the applied later force acts
Center of rigidity
33
The point on a structure where the resultant vertical forces acts
Center of mass
34
The distance between the center of mass and center of rigidity
Eccentricity
35
Which of the following can be measured by a seismometer?
ground displacement
36
Which of the following refers to the flexibility of a structural system?
Inverse of stiffness
37
The material deforms considerably even with a sight increase in stress
Yielding
38
The material regains its original dimensions when the load is removed
Elasticity
39
The material deforms in the plastic range without breaking
Ductility
40
The stress point where a material will have appreciable deform when small amount of stress is experienced
Yielding
41
The ability of the material to deform in plastic range without breaking
Toughness
42
The greatest stress that can be applied to an elastic body without causing permanent deformation
Elastic limit
43
It is the point through which the resultant
of the resistance to the applied force acts.
Center of rigidity
44
Which property of material enables
it to under large permanent strains
before failure.
Ductility
45
It is the distance between the center of
rigidity and center of mass.
Eccentricity
46
What is the term for the value beyond
which the stress is no longer proportional
to the strain?
Proportional limit
47
It is the point through which the resultant of the resistance to the applied force acts
Center of rigidity
48
Which property of material enables it to under large permanent strains before failure
Ductility
49
It is the distance between the center of rigidity and center of mass
Eccentricity
50
What is the term for the value beyond which the stress is no longer proportional to the strain?
Proportional limit
51
The ability of the material to detorm under tensile stress
Ductility
52
The ability of a material to absorb energy when it is deformed elastically and release that energy upon loading
Resilience
53
The ability of a material to absorb energy and plastically detorm without tracturing.
Toughness
54
When a material is subjected to repeated cycle of
Stress or strain, what cause its structure to breakdown ultimately leading to fracture?
Fatigue
55
When a material has to support a load for a long period of time. what causes it to continue to deform until a sudden fracture occurs?
Creep
56
In what condition is a material when it breaks down and deforms permanently even due to a slight increase in stress above the elastic limit?
Plasticity
57
It occurs when a building coincides with the earthquake period.
Resonance
58
It refers to the displacement of one level relative to the level above or below
Story drift
59
It occurs when the structure's center of mass does not coincide with its center of rigidity
Torsional shear stress
60
Besides the epicenter, it describes the location of an earthquake
Focal depth
61
It is measured by seismometer
Actual displacement
62
It is measured by Richter's Scale
Magnitude of an earthquake
63
The material has the same components at every point but the elastic may not be the same in all directions
Homogeneous
64
The composite material exhibits elastic properties
in one direction different from that in the perpendicular direction.
Orthotropic
65
The material has the same elastic properties in all
directions
Isotropic
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90問 • 2年前問題一覧
1
The elongation per unit length, which is termed ______ and denited by E, may be found by dividing the total elongation by the length, L.
Normal Strain
2
A material having a relatively large tensile strain up to the point of rupture.
Ductile Material
3
A material having a relatively small tensil strain up to the point of rupture.
Brittle material
4
An arbitrary strain of _____ is frequently taken as the dividing line between ductile material and brittle material
0.05 mm/mm
5
This linear relation between elongation and the axial force causing it is called:
Hooke's law
6
The quantity E, i.e, the ratio of the unit stress to the unit strain, is the modulus of elasticity of the material in tension, or as it is often called
Young's modulus
7
The maximum stress that may be developed during a simple tension test such that the stress is a linear function of strain
Proportional limit
8
The maximum stress that may be developed during a simple tension test such that there is no permanent or residual deformation when the load is entirely removed
Elastic limit
9
the region of the stress-strain curve extending from the origin to the proportional limit
is called
Elastic range
10
the region of the stress-strain curve extending from the proportional limit to the point of rupture is called
Plastic range
11
there is an increaase of strain with no increase in stress, is known as the ______ of the materials
Yield point
12
The maximum ordinate to the curve, is known either as the ______ of the material
Ultimate strength or the tensile strength
13
The ordinate on the stress-strain diagram after the maximum ordinate to the curve is called ____ of the material
Breaking strength
14
The work done on a unit volume of material, as a simple tensile force is gradually increased from zero to such a value that the proportional limit of the material is reached, is defined as
Modulus of resilience
15
The work done on a unit volume of material as a simple tensile force is gradually increased from zero to the value causing rupture is defined as
Modulus of toughness
16
The decrease in cross-sectional area from the original area upon fructure divided by the original area and multiplied by 100 is termed _____
percentage reduction in area
17
The increase in length of a bar after fracture divided by the initial length and multiplied by 100 is the percentage elongation. Both the percentage reduction in area and the percentage elongation measures the ________of a material.
Ductility
18
If a ductile material can be stress consideredably beyond the yield point without failure it is said to
______- This is true of many structural metals.
strain-harden
19
The ordinate to the stress-strain curve such that the material has a predetermined permanent deformation or "set" when the load is removed is called ______ of the material.
Yield strength
20
The rate of change of stress with respect to strain is known as the_____ of the material.
Tangent modulus
21
This is defined as the change of length per unit length of a straight bar subject to a temperature change of one degree and is usually denoted by a. The value of this coefficient is independent of the unit of length but does depend upon the temperature scale used.
Coefficient of linear expansion
22
The ratio of the strain in the lateral direction to that in the axial direction is defined as:
Poisson's ratio
23
If the values of all external forces which act on a body can be determined by the equation of static equilibrium alone, then the force system is ____
statically determinate
24
In many cases the forces acting on a body cannot be determined by the equation of statics alone because there are more unknown forces that there are equations of equilibrium. In such a case the force system is said to be _____
statically indeterminate
25
One with the same elastic properties (E, v) at all points in the body.
Homogeneous material
26
If a material does not posses any kind of elastic symmetry it is called ___
Anistropic or aelotropic
27
If the material has thress mutually perpendicular planes of elastic symmetry it is said to be ___
Orthotropic
28
Modern filament-reinforced ______ are excellent examples of anistropic substances
composite materials
29
The ability of the material to absorb energy in the plastic range
Toughness
30
The ability of the material to absorb energy in the elastic range
Resilience
31
The term which refers to the ability of a material to deform in the plastic range without breaking
Ductility
32
It is the point through which the resultant of the resistance to the applied later force acts
Center of rigidity
33
The point on a structure where the resultant vertical forces acts
Center of mass
34
The distance between the center of mass and center of rigidity
Eccentricity
35
Which of the following can be measured by a seismometer?
ground displacement
36
Which of the following refers to the flexibility of a structural system?
Inverse of stiffness
37
The material deforms considerably even with a sight increase in stress
Yielding
38
The material regains its original dimensions when the load is removed
Elasticity
39
The material deforms in the plastic range without breaking
Ductility
40
The stress point where a material will have appreciable deform when small amount of stress is experienced
Yielding
41
The ability of the material to deform in plastic range without breaking
Toughness
42
The greatest stress that can be applied to an elastic body without causing permanent deformation
Elastic limit
43
It is the point through which the resultant
of the resistance to the applied force acts.
Center of rigidity
44
Which property of material enables
it to under large permanent strains
before failure.
Ductility
45
It is the distance between the center of
rigidity and center of mass.
Eccentricity
46
What is the term for the value beyond
which the stress is no longer proportional
to the strain?
Proportional limit
47
It is the point through which the resultant of the resistance to the applied force acts
Center of rigidity
48
Which property of material enables it to under large permanent strains before failure
Ductility
49
It is the distance between the center of rigidity and center of mass
Eccentricity
50
What is the term for the value beyond which the stress is no longer proportional to the strain?
Proportional limit
51
The ability of the material to detorm under tensile stress
Ductility
52
The ability of a material to absorb energy when it is deformed elastically and release that energy upon loading
Resilience
53
The ability of a material to absorb energy and plastically detorm without tracturing.
Toughness
54
When a material is subjected to repeated cycle of
Stress or strain, what cause its structure to breakdown ultimately leading to fracture?
Fatigue
55
When a material has to support a load for a long period of time. what causes it to continue to deform until a sudden fracture occurs?
Creep
56
In what condition is a material when it breaks down and deforms permanently even due to a slight increase in stress above the elastic limit?
Plasticity
57
It occurs when a building coincides with the earthquake period.
Resonance
58
It refers to the displacement of one level relative to the level above or below
Story drift
59
It occurs when the structure's center of mass does not coincide with its center of rigidity
Torsional shear stress
60
Besides the epicenter, it describes the location of an earthquake
Focal depth
61
It is measured by seismometer
Actual displacement
62
It is measured by Richter's Scale
Magnitude of an earthquake
63
The material has the same components at every point but the elastic may not be the same in all directions
Homogeneous
64
The composite material exhibits elastic properties
in one direction different from that in the perpendicular direction.
Orthotropic
65
The material has the same elastic properties in all
directions
Isotropic