1-Spindle Threshold In Figure (2), calculate the reactions in datums A, F and E, 15m 450 N 我 +15+ 2.5m. 20 m 60 D 100 N 85 N Figure (2)
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- Q.no-2 During test on a sample of steel bar 25 mm in diameter, it is found that the pull of 50kN produces an extension of 0.095 mm o a length of 200 mm and a torque 200N-m producesan angular twist of 0.9 degrees on a length of 250mm. Find the Poisson ratio of the steel.The round cross-sectional bar shown below is cut from a steel with a diameter of 36 mm and has the following properties (Sut = 479 MPa, Sy = 389 MPa and fully corrected Se =177 MPa). The bar is loaded at its end with a fluctuating bending load ranges from Fmin = -423 N to Fmax = 850 N. Using a design factor of nd = 1.2, what will be the maximum length of the bar that prevents failure using Modified Goodman criteria? * your answer must be in mm. * accepted answer range (+/- 5 mm)A shaft subjected to bending moment varying from -200 N m to +500 N m and a varying torque from 50 N m to 175 N m. If material of the shaft is 30C8, stress concentration factor is 1.85, notch sensitivity is 0.95 reliability 99.9% and factor of safety is 1.5, find the diameter of the shaft. The load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of 5 kN. Find the diameter of bolt required according to Maximum principal stress theory; Maximum shear stress theory; Maximum principal strain theory; Maximum strain energy theory; and Maximum distortion energy theory. Take permissible tensile stress at elastic limit = 100 MPa and poisson’s ratio = 0.3
- From the example problem, assume this is to be connected by a CROSS BELT. A. Determine the diameters of all the step. B. Angle of contact for each pair of pulleys, C. belt length.n Mukwano Industries, a shaft assembly shown in Fig. 2 is driven by a flat belt at location A and drives a flat belt at location B. The drive belt pulley diameter is 300 mm; the driven belt pulley diameter is 500 mm. The distance between sheaves is 800 mm, and the distance from each sheave to the nearest bearing is 200 mm. The belts are horizontal and load the shaft in opposite directions. Determine the size of the shaft using Distortion Energy Theory (DET) and the types of steel that should be used. Use a safety factor of 10. Also, provide a free-body diagram as well as moment and torque diagramsAn input shaft of a gearbox with motor power P = 7 kW and rotation number n = 1300 rpm. The diameter of an input shaft is d = 20 mm and its material is 16MnCr5. A force of F = 2800 N forces the shaft due to the operation of a gear wheel connected with a wedge on the input shaft. The distances of the gear from the bearings are given as L₁ = 40 mm and L2 = 60 mm. In the most dangerous section, you are required to check the strength according to the S = 3 safety factor. If the section is unsafe in terms of strength, what changes would you make in the design to make it safe? (The surface of the spindle is machined as fine chips, reliability poor Kg = 1.).
- Pls give right answer with step by step explanation. Design a clamp coupling for a shaft diameter of 60 mm. The torsional moment to be transmitted by this coupling taking in to account over loading as 160 N-m. The number of bolts used are 6 and the allowable stress in the material of the bolt is limited to 5N / m * m ^ 2 . The coefficient of friction between the shaft and muff material is 0.25.A shaft subjected to bending moment varying from -200 N m to +500 N m and a varying torque from 50 N m to 175 N m. If material of the shaft is 30C8, stress concentration factor is 1.85, notch sensitivity is 0.95 reliability 99.9% and factor of safety is 1.5, find the diameter of the shaft. The load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of 5 kN. Find the diameter of bolt required according to a.Maximum strain energy theory; and b.Maximum distortion energy theory. Take permissible tensile stress at elastic limit = 100 MPa and poisson’s ratio = 0.3A shaft subjected to bending moment varying from -200 N m to +500 N m and a varying torque from 50 N m to 175 N m. If material of the shaft is 30C8, stress concentration factor is 1.85, notch sensitivity is 0.95 reliability 99.9% and factor of safety is 1.5, find the diameter of the shaft. The load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of 5 kN. Find the diameter of bolt required according to a. Maximum principal stress theory; b. Maximum shear stress theory; c. Maximum principal strain theory; d. Maximum strain energy theory; and e. Maximum distortion energy theory. Take permissible tensile stress at elastic limit = 100 MPa and poisson’s ratio = 0.3
- Suppose that the assembled stiffness matrix of question 1 (as shown below) is as follows: [K]=108×a-a0-aa+b-b0-bb where a=4.06 N/m and b=2.28 N/m. If the applied force at node 3 is P=210 KN, find the displacement of node 2 in mm?Design of a Shaft subjected to Alternating Loads 1. [Proof of Concept] Considéra machined steel circular shaft subjected to maximum and minimum bending moment of 1000 and 4000 lb .in, respectively; and a maximum and minimum torque of 250 and 1600 Ib.in, respectively. Consider the factor of safety to be 2, the yield strength of the materials 40 ksi, and its ultimate strength to be 70ksi.Determine the minimum diameter of the shaft for the case where D is 20% larger than d, the fillet radius is 10% of d, and reliability is 99%. You may use DE-ASM E formula. 2. Write a computer code that can take Tm, Ta, Mm, Ma, choice of material, safety factor, and other necessary assumptions from the user and return an estimated diameter for the shaft.Choice of inputs is up to you. Note that many of the required quantities are themselves function of the shaft diameter. Your code should be submitted with a report.a) A line shaft as shown in Figure Q is driven using a motor placed vertically below it. The pulley on the line shaft is 1.6 m in diameter and has belt tensions 7.5 kN and 2.4 kN on the tight side and slack side of the belt respectively. Both tensions may be assumed to be vertical and the weight of the pulley is negligible. If the pulley is overhang from the shaft, the distance of the centre line of the pulley from the centre line of the bearing being 500 mm.6.Figure Q(i) Predict using distortion energy theory, the appropriate diameter of the shaft that failure will not occur if the yield strength, Sy = 370 Mpa and factor of safety is 2.5. (ii) Assuming the maximum allowable shear stress of 42 MPa, find its diameter using maximum shear stress theory. (iii) Comparing the diameters in (i) and (iii) above, which of them would you have used to design your shaft and why?