A steel wire of 20 mm diameter is bent into a circular shape of 10 m radius. If E, the modulus of elasticity, is 2 × 106 kg/cm², then the maximum tensile stress induced in the wire is.
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- A material has the stress–strain behavior shown in Figure P1.2. What is the material strength at rupture? What is the toughness of this material?A water tank made from a steel having a thickness of 12mm has the following dimensions. Internal Diameter:4 meters Height:6 meters Determine the circumferential stress in the walls of the water tank and longitudinal stress at the bottom of the water tank if the internal pressure inside the tank is 7.36 MPa. Answer should be in MPa.One aluminium rod joint together with steel and bronze rods loaded with axial load as shown in Figure 3. Calculate normal stress in each materials if P = 3kN.
- A rod with a length of 1 m and a radius of 20 mm is made of high-strength steel.The rod is subjected to a torque T, which produces a shear stress below the proportional limit. If the cross section at one end is rotated 45 degrees in relation to the other end, and the shear modulus G of the material is 90 GPa, what is the amount of applied torque?A steel plate used for polymer forming is to be bent into a circular shape having an inside radius of 10 m. What maximum thickness can be used for the plate if the normal stress is not to exceed 267 MPa? Assume that the modulus of elasticity for the steel is 201 GPa.At what angular velocity will the stress of the rotating steel ring equal 30 ksi if its mean radius is 5/4"? The density of steel 7.85 Mg/m^3.
- For P = 100 MPa, determine the range of values of τxy for which the maximum tensile stress is equal to or less than 60 MPa. (Round the final answer to one decimal place.)A steel rod, which is free to move, has a length of 200 mm and diameter of20 mm at a temperature of 15°C. If the rod is heated uniformly to 115°C,determine the length and the diameter of this rod to the nearest micron atthe new temperature if the linear coefficient of thermal expansion of steel is12.5 * 10-6 m/m/°C. Is there a stress on the rod at 115°C?The composite bar of neglible mass is connected to two rods as shown in the figure. If the system is initially free, determine the temperature change that will cause a tensile stress of 60 Mpa in the steel rod.
- The rigid, horizontal slab is attached to two identical copper rods. There is a gap ∆ = 0.18 mm between the middle bar, which is made of aluminum, and the slab. Neglecting the mass of the slab, calculate the stress in each rod when the temperature in the assembly is increased by 60 oC. Use the following data:A rectangular block of aluminum 30 mm * 60 mm * 90 mm is placed in a pressure chamber and subjected to a pressure of 100 MPa. If the modulus of elasticity is 70 GPa and Poisson’s ratio is 0.333, what will be the decrease in the longest side of the block, assuming that the material remains within the linear elastic region? What will be the decrease in the volume of the block?According to the stress – strain curve for a ductile material: A- what is the yield strength? B- What is the ultimate strength? C- Explain with supplemental figure.