1. A steel joint in building construction is supposed to be designed to withstand a multiaxial...
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1. A steel joint in building construction is supposed to be designed to withstand a multiaxial state of stress with the following stress values: [50 Points] 0x = 150, Gy=-60, Tyz = Tex=0 MPa What is the minimum yield strength required for the material if a safety factor of 2.0 against yielding is required? a) Employ Maximum Shear Stress Criterion b) Employ Octahedral Shear Stress Criterion Based on the results from (a) and (b), list all possible options from the table. (DO NO list options for (a) then options for (b), you need to decide if option (a) or option (b) is safer, then list its options) Table 4.2 Tensile Properties for Some Engineering Metals Elastic 0.2% Yield Ultimate Modules E Material Ductile cast iron A536 (65-45-12) AISI 1020 steel as rolled ASTM A514, TI structural steel AISI 4142 steel as quenched AISI 4142 stel 205 ℃ temper AISI 4142 steel 370 ℃ temper AISI 4142 steel 450°C temper 18 Ni maraging steel (250) GPa (10) 159 (23) 203 208 (302) 200 (29) 207 (30) 207 (30) 207 (30) 186 (27) Strength Strength Elongation de % 100 MPa MPa S 334 (49) 260 (37.7) = 50, 724 (105) 1619 (235) 1584 (230) 1378 (200) 1791 (260) 448 (65) 441 (64) 1688 2240 (245) (325) 807 (117) 2450 (355) 1757 (255) 1413 (205) 1860 (270) 15 20 8 8 Reduction in Arca GRA 0:=210, 19.8 66 cece 1. A steel joint in building construction is supposed to be designed to withstand a multiaxial state of stress with the following stress values: [50 Points] 0x = 150, Gy=-60, Tyz = Tex=0 MPa What is the minimum yield strength required for the material if a safety factor of 2.0 against yielding is required? a) Employ Maximum Shear Stress Criterion b) Employ Octahedral Shear Stress Criterion Based on the results from (a) and (b), list all possible options from the table. (DO NO list options for (a) then options for (b), you need to decide if option (a) or option (b) is safer, then list its options) Table 4.2 Tensile Properties for Some Engineering Metals Elastic 0.2% Yield Ultimate Modules E Material Ductile cast iron A536 (65-45-12) AISI 1020 steel as rolled ASTM A514, TI structural steel AISI 4142 steel as quenched AISI 4142 stel 205 ℃ temper AISI 4142 steel 370 ℃ temper AISI 4142 steel 450°C temper 18 Ni maraging steel (250) GPa (10) 159 (23) 203 208 (302) 200 (29) 207 (30) 207 (30) 207 (30) 186 (27) Strength Strength Elongation de % 100 MPa MPa S 334 (49) 260 (37.7) = 50, 724 (105) 1619 (235) 1584 (230) 1378 (200) 1791 (260) 448 (65) 441 (64) 1688 2240 (245) (325) 807 (117) 2450 (355) 1757 (255) 1413 (205) 1860 (270) 15 20 8 8 Reduction in Arca GRA 0:=210, 19.8 66 cece
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Essentials Of Business Statistics Communicating With Numbers
ISBN: 9780078020544
1st Edition
Authors: Sanjiv Jaggia, Alison Kelly
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