at both theories, uniform wear and uiform pressure,
Q: While solving problems using the average normal and average shearstress equations, why is the…
A: While calculating average shear stress, theoretically, the flaws in the system are not taken into…
Q: Is the maximum shear stress theory is based on the idea of slipping that occurs in ductile failure?
A: The maximum shear stress theory also known as Guest and Tresca's theory states that the failure of a…
Q: How stress different from strain? How do these concepts affect air planes and relates aviation…
A: To explain: How stress is different from the strain and how strain and stress affect air planes and…
Q: What is self-heating in strain gauges? Why is it caused and what are its implications on end result?
A: While there are several methods of measuring strain, the most common is with a strain gauge, a…
Q: 10 mm diameter holes are to be punched in a steel sheet of 3 mm thickness. Shear strength of the…
A: Given:Shear strength, τ=400 N/mm2diameter of hole, d=10 mmshear on punch, t1=2 mmsheet thickness,…
Q: 4. Estimate the force required for punching a 50 mm diameter hole through a 2 mm thick annealed…
A: Given data Diameter of hole (D) = 50 mm thickness of sheet (t) = 2 mm UTS = 1000 MPa To determine…
Q: A 2-cm square cross-section steel part having a Brinell hardness of 100 and a length of 4 cm is to…
A: Brinell hardness ( BHN) = 100 kgf/mm² BHN = 981 N/mm² Applied. Load ( F) = 70 KN Give volume of the…
Q: A 2-cm square cross-section steel part having a Brinell hardness of 100 and a length of 4 cm is to…
A:
Q: A pressure tank 5 m long and a mean diameter of 1 m is to be fabricated from a 10mm thick sheet. A 5…
A:
Q: .. If failure occurs in tension, why is shear important ? Why is torsional load called pure shear.
A: 1. If failure occurs in tension why shear is important Note :- you have posted multiple…
Q: Show that the true strain rate in extruding a round billet of radius r, as a function of distance x…
A:
Q: How can the theory be applied to find the maximum allowable shear stress for thick walled cylinders?
A: Answer: Maximum allowable shear stress for thick walled cylinders: As, we know that from maximum…
Q: What are the differences between uniform wear theory and uniform pressure theory?
A: Uniform pressure theory This theory is applicable only when the new friction linings are used In…
Q: In rolling process, calculate the applied torque in (N.m) when w= 600mm, K = 275 MPa, n = 0.10, %3D…
A: Given Data W=600 mm K=275 MPa n=0.1 ho=35 mm hf=29 mm R=373.3 mm
Q: Discuss the concept of Static and Dynamic Friction
A: To find-: The concept of Static and Dynamic Friction. Answer-: Friction: It is a resistive force…
Q: A 2-cm square crOss-section steel part having a Brinell hardness of 100 and a length of 4 cm is to…
A: Brinell hardness ( BHN) = 100 kgf/mm² BHN = 981 N/mm² Applied. Load ( F) = 70 KN Give volume of the…
Q: Estimate the force required for punching a 25mm diameter hole through a 3.2mm thick annealed…
A: Given data Diameter of hole = 25mm Thickness = 3.2 mm UTS = ULTIMATE TENSILE STRENGTH = 1000Mpa…
Q: • In a sheet metal forming press the shape to be formed is hemispherical cup of radius 15 cm in 2mm…
A:
Q: uess wh
A: given: engineering and true stress strain curve for shear are similar guess why
Q: Does the shear flow vary linearly along with segments that areperpendicular to the direction of…
A: Shear Flow In the real engineering world, the members are made of from composite pats to achieve a…
Q: A 2-cm square cross-section steel part having a Brinell hardness of 200 and a length of 5 cm is to…
A: Brinell hardness ( BHN) = 200 kgf/mm² BHN = 1961.33 N/mm² Applied. Load ( F) = 60 KN Give volume of…
Q: Why do the supports that resist a force, such as a pin, restrict displacement?
A: Supports are provided to make the best use of objects depends on the necessity.
Q: A 42.0-mm-thick plate made of low carbon steel is to be reduced to 34.0 mm in one pass in a rolling…
A:
Q: Calculate the force required to punch a circular blank of 60 mm diameter in a plate of 5 mm thick.…
A: From the given data, Diameter of the blank = d = 60 mm Thickness of the plate = t = 5 mm Ultimate…
Q: Describe the theory Tresca yield criterion?
A: Theories of failures relates different failure criterions with the properties of the materials such…
Q: Define the term friction. Explain about static friction and dynamic friction with examples?
A: Friction: It is a force which acts between two surfaces that are relative motion or trying to move…
Q: Discuss different types of forces with examples ,describe how these forces are responsible for…
A: Force :- A force is a push or pull acting upon an object as a result of its interaction with another…
Q: A 2-cm square cross-section steel part having a Brinell hardness of 100 and a length of 4 cm is to…
A: Brinell hardness ( BHN) = 100 kgf/mm² BHN = 981 N/mm² Applied. Load ( F) = 40 KN Give volume of the…
Q: Show that the true strain rate in extruding a round billet of radius ro as a function of distance x…
A:
Q: Justify the selection of standard rolled steel sections in mechanical design
A: The U-shaped cross-section of the roll-formed steel channel has two shorter return legs with hems.…
Q: What is the shear modulus and how can it be obtained from a torsion test?
A: 1. Shear modulus
Q: Maximum reduction in thickness for one pass in rolling process is Ahmax that can be expressed by Ah…
A:
Q: Suggest ways to improve the design of devices related to the theory learned in pipe friction…
A: given; suggest ways to improve the design of devices related to the theory learned in pipe friction;…
Q: Explain mechanical failure due to friction and wear.
A: Failures due to friction-In all types of mechanical machinery there are no. of links are connected…
Q: In rolling process, contact length between roll and workpiece (L) can be approximately determined…
A:
Q: applied is 20 kN and the depth to be removed from the surface is 4 mm, determine the number of…
A: Given:- Brinell hardness (BHN) = 200 kgf/ mm 2…
Q: wo high rolling mill setup has been used to reduce the thickness of a plate from 40 mm at the…
A: Let n is number of passes required to perform the reduction process ti=Initial thickness=40mm…
Q: In a rolling mill, the rollers can exert a pressure of 219 MPa on the sheet being rolled. If the…
A: Given:-h1=2 mmh2=2×0.25=0.5 mmμ=0.35To find:-Diameter
Q: State and explain the theories of failures applicable to Ductile
A: commonly we discuss two type of failure theory for ductile materials. 1.Maximum stress theory when…
Q: Does hysteresis take place? In affirmative case, to what can it be due?
A: Given Hysteresis To find Verification of hysteresis Reason of hysteresis
Q: Q2: Is the force of static friction constant as the incline rises? Explain your answer.
A: Solution: Note: Dear Student! As per our guidelines, we are only allowed to answer a single…
Q: Bulk Deformation Processes include cylindrical billets and Rectangular bars O Plates O Pipes
A: Bulk deformation: The process which introduce shape changes on the base metal by plastic deformation…
Q: (a) Find F, H, ẽ, and E for "pure shear" (homogeneous) in 2D. (b) Compare the components of ẽ and Ẽ…
A:
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- Flat belt 100mm wide and 8mm thick transmits power between two pulleys, running at 1600 m/min. The mass of belt is 0.9kg/m length, the angle of lap in the smaller pulley is 165o and the coefficient of friction between the belt and pulleys is 0.3, If the maximum permissible stress in the belt is 2MN/m2, find the maximum power transmitted.A cone clutch is to transmit 10 KW at 600 r.p.m. the cone has aface angle of 10◦The width of the face is halfe of the mean radius and the max pressureis 0.1 N/mm²Assuming uniform wear and the coefficient of friction is 0.3, find theinner and outer radius and the axial force required on the clutch. Subject: Theory of MachinesQ2 ) A cone clutch is to transmit 10 KW at 600 r.p.m. the cone has aface angle of 10◦The width of the face is halfe of the mean radius and the max pressureis 0.1 N/mm²Assuming uniform wear and the coefficient of friction is 0.3, find theinner and outer radius and the axial force required on the clutch.
- A torque of 40,000 N.m is applied to a 10 cm diameter shaft. What is the factor of safety of a steel(Sy = 410 MPa) if its shear strength is one-half of its capacity in tension?A leather belt which is 125 mm wide and 6 mm thick, is used for transmitting power from a pulley. The diameter of the pulley is 750 mm and its angular speed is 500 rpm. The angle of lap is 150° and coefficient of friction is 0.3. If the mass of 1 m3 of leather is 1 kg and stress in the belt is not to exceed 2.75 MPa then find the maximum power that can be transmitted by the belAn cylinder is 30 cm in diameter and the steam pressure is 7 kg/cm. If the cylinder head is held by 12 studs, find the size, assume safe tensile stress as 280 N/mm
- The material of a certain transmission shaft uses AISI 1030 HR, its yield strength is 260 MPa, the transmission torque of this shaft is 160 N·m, and it is subjected to a uniform axial tension of 0.5 kN. Please calculate according to the Distortion energy theory. The minimum shaft diameter with a safety factor n of 2.5 (to 2 decimal places).A bronze tire (thickness=12mm, width= 110 mm, internal diameter=800 mm) was heated and shrunk onto an 800.5 mm diameter bronze wheel. E = 83 GPa. 1. Find the Tensile stress in the tire. a. 51.8 MPa b. 121 MPa c. 107 MPa d. 125 MPa 2. Find the compressive force bet the tire and the wheel when pinched. a. 1.56 MPa b. 3.53 MPa c. 2.25 MPa d. 3.75 MPa 3. Find the minimum required wheel thickness when allowable stress is 124 MPa and the compressive stress is 1.5MPa. a. 4.0 mm b. 4.25 mm c. 3.52 mm d. 4.84 mmThe rotation or twist in degrees of a shaft, 800 mm long subjected to a torque of 80 N-m, 20 mm in diameter and shear modulus G of 80,000 MPa is:
- A closely coiled helical spring is made of 6 mm diameter steel wire, the mean diameter of the coil is 60 mm and there are 8 coils. Taking the modulus of rigidity as 100 kN/mm2, find the stress, in kPa, in the wire when carrying an axial load of 529N.A torsion dynamometer is fitted on a turbine shaft to measure the angle of twist. It is observed that the shaft twists 1.5° in a length of 5 metres at 500 r.p.m. The shaft is solid and has a diameter of 200 mm. If the modulus of rigidity for the shaft material is 85 GPa, find the power transmitted by the turbine.A conical pivot bearing 150 mm in diameter has a cone angle of 120º. If the shaft supports an axial load of 20 kN and the coefficient of friction is 0.03, find the power lost in friction when the shaft rotates at 200 r.p.m., assuming 1. Uniform pressure, and 2. uniform wear. [Ans. 727.5 W ; 545.6 W]