4 An elastic layer is sandwiched between two perfectly rigid plates, to which it is bonded. The layer is compressed between the plates, the compressive stress being o. Supposing that the attachment to the plates prevents lateral strain $2, 6y completely, find the apparent Young's modulus (i.e., oe/cs) in terms of E and ». Show that it is many times E if the material of the layer is nearly incompressible by hydrostatic pressure.

Q: Three rods of different materials are connected and placed between rigid supports at A and D, as…

A:

Q: The principal stresses at a point a stressed material are 2 01= 200 N/mm², 02= 150 N/mm2, and 02=…

A: Given data- Principle stresses- σ1=200 N/mm2,σ2=150 N/mm2,σ3=200 N/mm2,E=210 kN/mm2Poisson's ratio…

Q: The state of plane strain at a point is ɛ, = 800 x 10-6, ɛ, = 200 x 10-6 and y, = -600 x 10-6, If…

A: To Find, Major principal stress = ?

Q: For the stress block shown, what is OP2 if OP1 = 140 MPa (T)? A.60 MPa (T) 40 MPa B.60 MPa (C) C.20…

A: Calculations:σx=+120mpaσy=-40Mpaσ1=140mpagivenσ1=σx+σy2+σx-σy2+ζxy2140=120-402+120+4022+ζxy2140=40+8…

Q: Material is subjected to a general state of plane stress. Express the strain energy density in terms…

A: Consider the figure shown below. The expression for the normal strain along the x axis is given by,…

Q: A prismatic bar has a cross-section of 25 mm by 50 mm and a length of 2000 mm. Under an axial load…

A: Width B=25 mm Depth D=50 mm Length L=2000 mm Load P=100 kN Elongation ∆L=2 mm Tensile stress & %…

Q: A flat bar of cross section 15 mm by 70 mm elongates 2.59 mm in a length of 1.3 m as the result of…

A: Axial stress is the ratio of load and the areaσ=PAσ=230,000N15×70 mm2σ=219Mpa

Q: Q.2) A rigid bar ACD is supported by two circular steel (E= 30x10° psi) rods DE and a pin support at…

A: Draw free body diagram From deflected shape δAB8=δP4=δDE6=tanθ Consider the moment equilibrium…

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.