Problem 4: A cast iron shaft, ASTM-25 with an ultimate tensile strength of 25,000 psi, is subjected to a tor- sional load which is completely reversed. The load is to be applied an indefinite number of cycles. The shaft is 2" in diameter and is joined to a 3" diameter shaft with a 1" radius fillet. The factor of safety is to be 2. What is the maximum torque that can be applied to the shaft? Solve by two methods: (1) using Soderberg's equation, (2) using s = Tc/J directly.

Problem 4: A cast iron shaft, ASTM-25 with an ultimate tensile strength of 25,000 psi, is subjected to a tor- sional load which is completely reversed. The load is to be applied an indefinite number of cycles. The shaft is 2" in diameter and is joined to a 3" diameter shaft with a 1" radius fillet. The factor of safety is to be 2. What is the maximum torque that can be applied to the shaft? Solve by two methods: (1) using Soderberg's equation, (2) using s = Tc/J directly.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Required Information A rotating shaft of 25-mm diameter is simply supported by bearing reaction forces Rjand R2. The shaft Is loaded with a transverse load of 13 kN as shown in the figure. The shaft is made from AISI 1045 hot-rolled steel. The surface has been machined. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 200 mm 25 mm 13 kN 50 mm- Not to scale Determine the endurance limit, adjusted as necessary with Marin factors. The endurance limit is 210.7 MPa.
Problem 2: F = 10 kip -10 in- -5 in- -5 in- d/5 R. R1 d/ 10 R. 1.4 d- R2 I in The shaft shown above rotates at 1200 RPM and supports a 10 kip load. The material of the shaft is 1095 hot-rolled steel and its surface is machined and then polished. Using a factor of safety of 1.6, specify the minimum value of diameter d for a life of 1,000 hours.
Required information A rotating shaft of 25-mm diameter is simply supported by bearing reaction forces R₁ and R₂. The shaft is loaded with a transverse load of 13 kN as shown in the figure. The shaft is made from AISI 1045 hot-rolled steel. The surface has been machined. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 25 mm- R₁ 200 mm- 13 KN Not to scale. -50 mm. B₂ Determine the minimum static factor of safety based on yielding. The minimum static factor of safety based on yielding is
Requlred Informatlon A rotating shaft of 25-mm dlameter Is simply supported by bearing reaction forces R;and R2. The shaft is loaded with a transverse load of 13 kN as shown In the figure. The shaft is made from AISI 1045 hot-rolled steel. The surface has been machined. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 200 mm 25 mm 13 kN -50 mm Not to acale Determine the minimum fatigue factor of safety based on achleving Infinite life. The minimum fatigue factor of safety is
The shaft is shown in Figure 3 is modified using the shaft from Question 2. Manufacturer selected as machined surface treatment for the shaft. It contains two fillets and one groove. The shaft rotates at 3000 řpm, whilst the imposed loads remain static. (a) Ifthe shaft is subjected to two-point load as shown below, F =10 kN, Calculate the factor of safety with respect to fatigue failure. (b) If the shaft is subjected to two-point load F= 10 kN while transmitting a power of P = 32 kW, Calculate the factor of safety with respect to fatigue failure. (L1 = 70 mm, L2 = 100 mm, L3 = 80 mm, La = 40 mm, Ls = 50 mm, L6 = 30 mm, Rj = 2 mm, R2 1 mm, R3= 4 mm, d = 24mm and D = 32mm,) 0.3F 0.7F LI Ls L. L6 ノ R1 R3 R2
! Required information A rotating shaft of 25-mm diameter is simply supported by bearing reaction forces R1and R2. The shaft is loaded with a transverse load of 13 kN as shown in the figure. The shaft is made from AISI 1060 hot-rolled steel. The surface has been machined. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 200 mm 50 mm 25 mm 13 kN R1 R2 Not to scale. Determine the minimum fatigue factor of safety based on achieving infinite life.
4. A solid square rod is cantilevered at one end. The rod is 0.6 m long and supports a completely reversing transverse load at the other end of ±2 kN. The material is AISI 1080 hot-rolled steel. If the rod must support this load for 104 cycles with a design factor of 1.5, what dimension should the square cross section have? Neglect any stress concentrations at the support end. 65
Figure below shows a portion of a pump that is gear-driven at uniform load and speed. The 25 mm diameter solod shaft supported by the bearings is to be made of machined AISI 1045 CD steel. The helical gear is subjected to the axial force F =499 y a radial load F = 741 N and a tangential load of F=2,006 N. Assume the component is operating at room temperature of 70°F and the material has 50% reliability factor. 25-mm solid Bending K, = 2.0 round shaft Fillet Torsional K = 1.5 F. F, Axial K, = 1.8 F Pump Helical spur gear 50 mm -250-mm dia.- FIGURE 1. Identify the critical location(s) of stress and show it clearly in a diagram. 2. Identify cleary, all the components of stresses (at the critical point) that will be calculated (by drawing and clearly showing the XYZ axes) and show it in a matrix form. Show which components of stresses will have a value zero or non-zero. 3. Calculate the principal stresses and principal directions. Show the principal stresses clearly in a stress element…
4. A tube composed of a wrought aluminum alloy 6061-T6 is designed to transmit a torque in a control mechanism; however the compressive stress in the tube must not exceed 7000 psi to prevent the tube from buckling. The tube has an outside diameter of 1.25 in., a wall thickness of 0.065 in. and total length of 2.0 ft. Find the maximum torque which can be applied and the angle of twist over the length of the tube at the maximum torque.
The figure below shows a boat propeller mounted on a drive shaft with a 7 mm diameter (d) cylindrical drive pin inserted through the hub and the shaft. The drive shaft diameter, D, inside the hub is 69 mm. The pin is made from AISI 1020 cold rolled steel, which has a yield stress of 427 MPa and an ultimate stress of 621 MPa. If the drive pin is subjected to an overload (e.g. strikes a log), calculate the torque (Nm) required to shear the pin. Note: Assume that the max shear stress of the pin material is approximately equal 82% of the ultimate tensile stress. Do not include units in your answer. Pin F Hub Drive pin Shaft Drive shaft F Shear planes Hub Answer:
A 45 mm diameter shaft is made of steel with a yield strength of 400 MPa. A parallel key of size 14 mm wide and 9 mm thick made of steel with a yield of 340 MPa is to be used. Find the required length of key, if the shaft is loaded to transmit the maximum permissible torque. Use maximum shear stress theory and assume a factor of safety of 2.
Problem 2: Let FA=100 N and F= 208.33 N for the shaft below. The bearings D and B act as pin supports. The shaft is made of 2014 aluminum alloy with a yield strength of 276 MPa. The shaft has a diameter of 8 mm. Based on the maximum shear stress (MSS) theory, determine if the shaft is safe. Determine the corresponding safety factor. Y 45 mm 30 mm D. 20 mm FC 20° Gear 1 50-mm dia. Shaft FA 20° Gear 2 24-mm dia.