d 5 in 150 mm 3 in W 2 in 40 mm 1.25 in F 600 lbf 2 kN 250 lbf M Ste Ste C
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- MACHINE DESIGN TOPIC A short compression member with Do = 2Di is tosupport a dead load of 25 tons. The material isto be 4130 steel, WQT 1100 F. Calculate theoutside and inside diameters in terms of incheson the basis of (a) yield strength, (b) ultimatestrength.*For 4130 steel, WQT 1100 FSu = 127 ksiSy = 114 ksi*Use the following Safety FactorsNu = 4Ny = 2A structural support for a machine is subjected to a static compression load of 20 kN. The support is manufactured from a circular rod made from SAE 1040 Hot Rolled steel. Specify suitable diameter for the cross section of the rod based on the basic size. Steel data are available in Table A-10 from the textbook. A-10 Typical propertics of carbon and alloy steels. Ultimate strengih, s. Yield strength, Percent Material SAE no. Condition ksi MPa: ksi MP clongation Anncaled Hot rolled Cold drawn 57 65 75 393 448 517 43 48 64 296 331 441 36 36 20 1020 1020 1020 1040 Annealed 75 $17 352 30 Hot 1010 565 641 621 s52 16 Cold drawn WQT 700 WQT 900 WQT 1100 WQT 1300 1040 876 814. 19 22 127. 1040 1040 1040 1040 107 87 600 63 434 32 1080 1080 1080 1080 Annealed OQT 700. OQT 900 OQT 100 OQT 1300 89 189 179 145 117 614 1303 1234 1000 807 54 141 129 372 972 889 P10 13 17 103 70 483 1080 352 655 T186 中6 14 Annealed Cold drawn OQT 700 OQT 900 OOT 1100 OQT 1300 87 112 193 146 116 94 600 772 1331 1007 800…Q3- Only Answer two branches. a- calculate the atomic backing factor for Bc.. b- 10 mm diameter of Brinall hardness ball when the load =500 kgr and HB= 300 determined the diameter of indenter. C- The diminutions of the low alloy steel impact test sample as shown in fig below and the notched depth is 1.5 mm determine the impact toughness if the impact energy absorption at test is 100 joul. Charpy 10 mm so man
- A tianium disk (roe 107 CPa, Poisson's ratio = 0,34)precisely 8 mm thick by 30 mm diameter is usedas a cover plate in a mechanical loading device. Ifa 20-kN load is applied to the disk, calculate theresulting dimensions.Condition #1: A structural support for a machine is subjected to a static compression load of 20 kN. The manufactured from a circular rod made from SAE 1040 Hot Rolled steel. Specify suitable diameter for the cross section of the rod based on the basic size. Steel data are available in Table A-10 from the textbook. support is A-10 Typical properties of carbon and alloy stcels. Ultimate strength, s Yield strength, s, Percent Material SAE no. Condition ksi MPa ksi MPa elongation 1020 Annealed Hot rolled 57 393 43 296 36 1020 65 448 48 331 441 36 1020 Cold drawn 75 517 64 20 1040 Annealed Hot rolled Cold drawn 75 517 51 352 30 BO40 90 621 60 82 414 1040 97 669 565 16 1040 WQT 700 WQT 900 WQT 1100 WQT 1300 127 118 876 93 641 19 1040 814 90 621 1040 107 738 80 552 24 1040 87 600 63 434 32 1080 Annealed OQT 700 OQT 900 OQT 1100 OQT 1300 89 614 1303 1234 1080 54 372 25 189 179 145 117 141 129 972 889 710 1080 12 1O80 13 1000 103 70 17 23 1080 807 483 1141 Annealed 87 600 772 1141 51 352 26…Let's assume that the stress-strain elongation curve of a high-strength steel is given by this equation. o = 1.4*10º"ɛ 3 2.9*10*ɛ ² + 2.1*10°z Calculate the yield limit value of this steel. Oa (kgf/cm³) (For Yield Strength, use a straight line from the starting point and Calculate wwwwwww ww w m by moving the line parallel to the given curve)
- A 13-kN hydraulic press for removing and reinstalling bearings in small-to medium-sized electric motors is to consist of a commercially available cylinder mounted vertically in a C- frame, with dimensions as sketched in the Figure shown below. It is being proposed to use ASTM A-48 (Class 50) gray cast iron (brittle material with ultimate strength, s.,= 345 MPa) for the C-frame material. Calculate the location of neutral axis upto 2 digits after decimal point in mm? 18 mm 38 mm 13 kN 1 10 mm A* 25 mm YA -90 mm 10 mm: Brinell Hardness and Ultimate Tensile Stress A steel member has a Brinell of H = 275. Estimate the ultimate strength of the steel in MPa. A gray cast iron part has a Brinell hardness number of H₂= 200. Estimate the ultimate strength of the part in kpsi. Make a reasonable assessment of the likely grade of cast iron by comparing both hardness and strength to material options in Table A-24. A part made from 1040 hot-rolled steel is to be heat treated to increase its strength to approx- imately 100 kpsi. What Brinell hardness number should be expected from the heat-treated part?Using the tensile test simulation tool, a. generate the stress-strain curve for aluminum b. Indicate the following points in the stress-strain curve for aluminum and give the corresponding values: limit of proportionality elastic limit 0.2% offset yield stress (include the graph illustrating how this was determined) ultimate stress fracture stress c. Calculate modulus of elasticity. d. compare aluminum with nylon (include the related graph) and answer the following: Which has higher tensile strength? Provide the necessary values to support the answer. Which is stiffer? Support your answer with calculations.
- A 13-kN hydraulic press for removing and reinstalling bearings in small-to medium-sized electric motors is to consist of a commercially available cylinder mounted vertically in a C- frame, with dimensions as sketched in the Figure shown below. It is being proposed to use ASTM A-48 (Class 50) gray cast iron (brittle material with ultimate strength, s,,= 345 MPa) for the C-frame material. State whether true/false. Under the loading conditions, failure happens 18 mm 38 mm 13 kN 10 mm 25 mm A -90 mm 10 mmYour task is to design a full journal bearing to support the crankshaft of an engine. The crankshaft would be attached a journal that would be rotating within the bushing. The maximum speed of rotation of the crankshaft is 6000 rpm. The operating temperature is 130-F. The load on the bearing is 675lbf. The journal diameter has to fit on the crankshaft and has to be 2.5in. The length of the bearing has to be under 1.5in. The oil used in the engine is SAE 50. The performance of your bearing should have a maximum coefficient of friction of 0.04 and a minimum film thickness no lower than 0.001in. Determine the bearing dimensions you will use based on your goals and the charts in your formula sheet.A gauge # 10 HSLA steel for an automotive application has a Young’s modulus of 200 GPa, a yield strength of 370 MPa and a ultimate tensile strength of 440 MPa. What is the punch force needed to punch a square hole with a side length of 20 mm on this HSLA steel? Show your work.