Mechanics of material Does normal Strain caused by normal force, increases or decreases the volume

Q: The elongation of a bar in axial loading is proportional to the following except A Stress in the bar…

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Q: 2. A cord has original length of 100 cm is pulled by a force. The change in length of the cord is 2…

A: Solution - strain = change in lengthoriginal lengthchange in length = 2 mm…

Q: The radius of Mohr's circle of stress of a strained element is 20 N/mm² and minor principal tensile…

A: Given- Radius of Mohr's circle R=20 N/mm2Minor principal tensile stress =10 N/mm2

Q: choose the correct answer

A: Wrong about elastic material

Q: The stress in an elastic material is: A Inversely proportional to the force acting B Inversely…

A: Explanation: A) Stress means resistance force per unit area, resistance force means the force acting…

Q: TRUE OR FALSE ONLY. PLEASE HELP 1. Area of shear diagram is equal to the magnitude of bending…

A: 1) True It is true that area of shear diagram is equal to the magnitude of the Bending moment. 2)…

Q: All of the statements are correct except When a body is loaded in three axes, the total deformation…

A: Statement 1 --true Statement 2 ---true STATEMENT 3 --- TRUE STATEMENT 4---false Its is the…

Q: In terms of the stress-at-a-point analysis, define principal stress. Indicate how it is different…

A: Principal stress:

Q: The elongation of a bar in axial loading is proportional to the following except A Stress in the bar…

A: To Find :- The elongation of a bar in axial loading is proportional to following except

Q: The cross-section of a composite beam made of aluminium and steel is shown in the figure. The moduli…

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Q: Stress 1 2 4 5 Strain Stress vs. Strain curve for mild steel steel (Ductile material).

A: given - stress/strain curve of mild steel

Q: The strain energy of a member is: A) directly proportional to the modulus of elasticity B inversely…

A: Strain Energy(U) in a member subjected to a load P is given by :  (P2 L/ 2AE) U α 1E U α P2 U α L U…

Q: Find the change in volume of 5 ft3 of water at 80 0F when subjected to a pressure increase of 368…

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Q: Which stress element below correctly shows the normal and stress al point X? M P D E F X F H

A: Option (H) is the correct answer.

Q: 3. The stress element is shown in the figure. Determine the equivalent stress according to the third…

A: Solution: Given: σx=40 MPaσy= 40 MPaτxy=60 MPa Equivalent stress according to third and fourth…

Q: The lateral strain is a. None of the options b. The ratio of length of body to the tensile force…

A: Strain : Strain is ratio of change in single dimension upon original dimension  Types of strain :…

Q: Find the value of strain if stress is 50 MPa and youngs modulus is 100 MPa

A: The strain can be calculated using Hookes law.

Q: An element in plane stress is subjected to stresses Ox = -8400 psi, ay = 1100 psi, and txy= 1700 psi…

A: (a) Strains for an element oriented at 30° is ,…

Q: 2.Discuss elastic region in a tensile test and shear test. It is always linear. What is engineering…

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Q: A quantity which represents the ratio of the lateral strain to the longitudinal strain for a…

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Q: Find the modulus of elasticity Stress=2 MPa

A: According to given data  Stress = 2 MPaStrain = 0.1

Q: The stress parallel to the surface of the material is called_ A Shear Stress B Normal Stress C)…

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Q: The ratio of direct stress to the limit. The ratio is known as Volumetric strain O Bulk modulus O…

A: The ratio of direct stress to volumetric strain within elastic limit is called BULK MODULUS.

Q: Find the value of strain if stress is 45 Mpa and modulus of elasticity 70 MPa

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Q: The strength of a bar depends of the following components EXCEPT (A) Stiffness of the bar B Material…

A: Strength of a bar depends on its geometry, stiffness and material properties. Therefore, the answer…

Q: Shear modulus (G) is the ratio of O a. Linear stress to lateral strain O b. Volumetric strain to…

A: Option C is correct.  Shear stress to shear strain

Q: Describe the Basic step in determining stresses on a random plane through a point in terms of known…

A: if σ1 and σ2 are known principal stress as shown in figure, then normal stress and shear stress on…

Q: The cross-section of a composite beam made of aluminium and steel is shown in the figure. The moduli…

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Q: Which of the following does not cause any changes in the value of bending stress on a beam?

A: Which of the following does not change any value in bending stress in beam- (D)- Load acting on the…

Q: All of the following statements are correct except: a. Materials with higher modulus of elasticity,…

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Q: Modulus of rigidity may be defined as the ratio of O(A) Linear stress to lateral strain O(B) Lateral…

A: Modulus of rigidity is also known as shear modulus . It is defined as the ratio of shear stress upon…

Q: A wooden member is independently subjected to the shown two states of stress. The grains of the…

A: ##Two wooden cases in which case is more critical ##

Q: Show the relationship between axial stress and strain to get the axial deformation

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Q: When the stress is removed, the material returns to the dimension

A: Deformation : change in size or shape of an object is referred to as deformation. The absolute…

Q: Draw a typical stress-strain behaviour of steel subjected to tension. On the graph, show the modulus…

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Q: Discuss Stress-Strain Properties

A: Stress: It is defined as the force applied to the specimen per cross-sectional area of the specimen.…

Q: The strain of a component, which has a tensile modulus of 3 X 105 MPa, and subjected to a stress of…

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Q: Learning Goal: To become familiar with the general equations of plane strain used for determining…

A: Given data:- ∈X=370×10-6∈Y=-220×10-6γxy=195×10-6 The given angle, θ=60°

Q: Describe the Plane Strain and Axisymmetrical Strain.

A: The Plane Strain and Axisymmetrical Strain are explained as below,

Q: 2. (3 points) When loading is applied at a point on a body, the stress distributions at different…

A: Saint Venant’s principle

Q: Viscosity is the proportionality factor that relates the shear stress to the shear strain.

A: Shear stress=ζViscosity=μdudy=Rate of shear strainζ=μ×dudyViscosity is the proportionality factor…

Q: Application and Significance of normal and shear stresses on a plane in the field of civil…

A: we have to determine the significance of normal and shear stresses on a plane in the field of civil…

Q: Bulk modulus of elasticity is the ratio of (a) Tensile stress to tensile strain (b) Compressive…

A: Bulk modulus of elasticity is the ratio of  compressive stress to volumetric strain . Bulk…

Q: Toughness is the ability of material to sustain tensile stress. * False True

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Q: The state of stress at a point is shown with respect to xy-plane. The state of stress at a point is…

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Q: A В 3-

A: Material A – The following are the features of the stress-strain curve of material A: The stress…

Q: The elongation of a bar in axial loading is proportional to the following except A Stress in the bar…

A:

Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.