Maximum Principal Stress Theory is not good for brittle materials.

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asked 3 days ago in Machine Design by Carter (86.7k points)

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The total strain energy for a unit cube subjected to three principal stresses is given by?

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asked 5 days ago in Machine Design by Carter (86.7k points)

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The normal stress is perpendicular to the area under considerations, while the shear stress acts over the area.

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If any cross section is subjected to direct tensile stress and bending stress, then find the dimension of cross section. Given length & breadth are t and 2t respectively. F=25kN acts on the top fibre of the cross section, M=F x t . Also maximum allowable tensile stress =100N/mm².

asked Jan 23 in Machine Design by Carter (86.7k points)

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asked Jan 23 in Machine Design by Carter (86.7k points)

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For components made of ductile materials like steel, subjected to static loading which of the following strength is used as a failure of criterion?

asked Jan 22 in Machine Design by Carter (86.7k points)

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If for a curved beam of trapezoidal cross section, radius of neutral axis is 89.1816mm and radius of centroidal axis is 100mm, then find the bending stress at inner fibre whose radius is 50mm. Area of cross section of beam is 7200mm² and the beam is loaded with 100kN of load.

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A right angled bell-crank is designed to raise a load of 5kN at short arm whose length is 100mm. Also longer arm is of length 500mm. If permissible bearing pressure on pin is 10N/mm² and diameter of the 20mm, find the shear stress in the pin.

asked 5 days ago in Machine Design by Carter (86.7k points)

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A curved beam with eccentricity 0.02D is loaded with 1kN.Centroidal radius=4D and inner and outer radii are 3.5D and 4.5D respectively. Area of cross section is 0.8D². Find the dimension D if allowable stress is 110N/mm².Considering only bending stress.

asked 6 days ago in Machine Design by Carter (86.7k points)

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A curved beam with eccentricity 0.02D is loaded with 1kN.Centroidal radius=4D and inner and outer radii are 3.5D and 4.5D respectively. Area of cross section is 0.8D². Find the dimension D if allowable stress is 110N/mm² and considering only direct tensile stress.

asked Jan 23 in Machine Design by Carter (86.7k points)

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Stress intensity factor is the critical value of stress at which crack extension occurs.

asked Jan 22 in Machine Design by Carter (86.7k points)

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In cold riveting like hot riveting shank is subjected to majorly tensile stress.

asked Jan 22 in Machine Design by Carter (86.7k points)

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If knuckle joint is to fail by crushing failure of pin in fork, then determine the diameter of knuckle pin when 50kN axial tensile force act on rods. Given: Max allowable compressive stress=25N/mm², thickness of each eye of fork=25mm.

asked Jan 22 in Machine Design by Carter (86.7k points)

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A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the interference [E=210kN/mm²].

asked 3 days ago in Machine Design by Carter (86.7k points)

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A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the radial stresses due to shrink shift in jacket.

asked 5 days ago in Machine Design by Carter (86.7k points)

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A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². In service the cylinder is further subjected to an internal pressure of 25MPa. Calculate the tangential stress in compound cylinder.

asked 5 days ago in Machine Design by Carter (86.7k points)

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A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the radial stress due to shrink shift in inner tube.

asked 6 days ago in Machine Design by Carter (86.7k points)

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A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². In service the cylinder is further subjected to an internal pressure of 25MPa. Calculate the radial stress in compound cylinder.

asked Jan 23 in Machine Design by Carter (86.7k points)

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A high pressure cylinder consists of a steel tube with inner and outer diameters 30 and 60mm respectively. It is jacketed by an outer steel tube, having an outer diameter of 90mm. Maximum principal stress induced is 80N/mm². Calculate the shrinkage pressure.

asked Jan 23 in Machine Design by Carter (86.7k points)

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How many modes are there for crack propagation?

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Modulus of rigidity for carbon steels is greater than that of grey cast iron.

asked Jan 21 in Machine Design by Carter (86.7k points)

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asked 3 days ago in Machine Design by Carter (86.7k points)

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