Q3/ Thickness of plate is 5mm and its yield stress is 630 MPa with endurance limit equals 225 MPa, safety factor is 2.5 find the safe load P to avoid failure rastom -3 AVE 3P Filmm 160 30 mm 25 mm 20 mm 20 mm כויות 20 P C
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- Solve the preceding problem if the internal pressure is 3,85 MPa, the diameter is 20 m, the yield stress is 590 MPa, and the factor of safety is 3.0. (a) Determine the required thickness to the nearest millimeter. (b) If the tank wall thickness is 85 mm, what is the maximum permissible internal pressure?Three round, copper alloy bars having the same length L but different shapes are shown, in the figure. The first bar has a diameter d over its entire length, the second has a diameter d over one-fifth of its length, and the third has a diameter d over one-fifteenth of its length. Elsewhere, the second and third bars have a diameter Id. All three bars are subjected to the same axial load P. Use the following numerical data: P = 1400 kN, L = 5m,d= 80 mm, E= 110 GPa. and v = 0.33. (a) Find the change in length of each bar. (b) Find the change in volume of each bar.Two steel wines support a moveable overhead camera weighing W = 28 lb (see figure part a) used For close-up to viewing of field action at sporting, events. At some instant, wire I is at an angle a = 22° to the horizontal and wire 2 is at angle fi = 40°. Wires I and 2 have diameters of 30and 35 mils, respectively. (Wire diameters are often expressed in mils; one mil equals 0.001 in.) (a) Determine the tensile stresses s and s2 in the two wires. (b) If the stresses in wires 1 and 2 must be the same, what is the required diameter of wire 1 ? (c) To stabilize the camera for windy outdoor conditions, a third wire is added (see figure part b). Assume the three wires meet at a common point coordinates (0, 0. 0) above the camera at the instant shown in figure part b. Wire I is attached to a support at coordinates (75 ft, 48 ft, 70 Ft). Wire 2 is supported at (-70 ft. 55 ft, 80 Ft). Wire 3 is supported at (-10 ft. -85 Ft, 75 ft). Assume that all three wires have a diameter of 30 mils. Find the tensile stresses in all three wires
- Solve the preceding problem if the thickness of the steel plate is. t = 12 mm. the gage readings are x = 530 × 10-6 (elongation) and y = -210 -× l0-6 (shortening), the modulus is E = 200 GPa, and Poisson’s ratio is v = 0.30.An aluminum bar has length L = 6 ft and diameter d = 1.375 in. The stress-strain curse for the aluminum is shown in Fig. 1.34. The initial straight, line part of the curve has a slope (modulus of elasticity) of 10.6 × 106 psi. The bar is loaded by tensile forces P = 44.6 k and then unloaded. (a) That is the permanent set of the bar? (b) If the bar is reloaded. what is the proportional limit? hint: Use the concepts illustrated in Figs. l.39b and 1.40.The rails of a railroad track are welded together at their ends (to form continuous rails and thus eliminate the clacking sound of the wheels) when the temperature is 60°F. What compressive stress ?? =6.5×10-6 /? is produced in the rails when they are heated by the sun to 120"F if the coefficient of thermal expansion a = the modulus of elasticity E = 30 × 106 psi?
- Consider the copper lubes joined in the strength of the copper is err = 200 MPa, figure using a "sweated" joint. Use the properties and what is the maximum load P]iwathat can be dimensions given. applied to the joint if the desired factor of safety in shear is FS_ - 2 and in tension is (a) Find the total elongation of segment 2-3-4 (A high-strength steel bar used in a large crane has a diameter d = 2.00 in. (sec figure). The steel has a modulus of elasticity E = 29 × 10 psi and Poisson’s ratio is v = 0.29. Because of clearance requirements, the diameter of the bar is limited to 2.001 in. when it is compressed by axial forces. What is the largest compressive load Pmaxthat is permitted?EHide bl OP=287 N OP=573 N Let's consider a rod having a solid circular cross-section with diameter of 4 mm and it is made of a material having a Young's modulus E = 200 Gpa and a Poisson's ratio of 0.3. If a tensile force F is subjected to that rod cross-section, the diameter becomes 3.998 mm. determine the applied force F. Select one: OF=10472 N OF=15708 N OF=6283 N O F= 4189N F = 13090 N OF= 5236 N Finish attempt.. US ACTIVITY O Test-Spring 2020-2021 Jump to...
- 1.3-2 A load of P = 3.0 kips is applied to the connection. The failure stress of the pin material is 25 ksi. Design the diameter of the pin to the nearest 1/16-inch assuming a factor of safety of 2.A ductile bar as shown in figure 1 has a yiel strength of oy = 390 MPa. Force F makes a 30° angle with the positive x axis. Deter- mined the magnitude of F that will cause yielding. Hint: Select the most loaded point in the structure and the failure theory to use according to the material (The standard one for this type of material). Refer to the lecture. 2 y 7 75 mm 500 mm F 300 mm XQ1/A curved link mechanism made from a round steel bar 1 KN is shown in Fig. below, The material for the link is plain carbon steel 30CS with an allowable yield strength of 400 MPa. Determine the factor of safety. I KN I KN 80 mm 20 mm