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- Which of the following DO NOT match? O Plastic Moment --- FyZ O Long Column -- Fcr = 0.658^(Fy/Fe)[Fy] O Beam Strength --- OMn O Allowable Load --- Rn/2NFD, SFD and BMD of the structureProblem 2 14600ksi, apr For the shown structure, AB is made by C83400-red-brass (Ebr 9.8 × 10-6/ °F) and BC is made by 2014-T6-aluminum (Eal 10600ksi, a al = 12.8 × 10-6/°F). AB and BC are joined at the collar B and fixed connected at their ends. The cross sectional area of each member is 1.75 in². If there is no load in the = member when T₁ 50 °F. Now the temperature for both members are increased to T₂ = 120 °F. Determine (1) Reaction forces at fixed end C (2) The average normal stress in the member AB (3) The average normal stress in the member BC (4) Eventually, how far will the collar B be displaced? = = 3 ft 2 ft
- Q1 Delermine the design (ultimate) bending mement for the beam sections showen belowi- 300 mm AG0 mn 330 530 4 bars A es 70 (a) fy s20 Mla - 34 Mla SI0 mm fe'= 28 MAA An 820 mn Ans: prh= 448ma) (Ans: Sectien hasFind the cross-sectional area of a 10m long steel bar that will not deform by more than 10mm nor be stressed by more than 100 Mpa when subjected to a 100 KN Load. E = 200 GPa. LILIL ---: :: - -. ---- ::: --". - -- I1- ---- ----- --- - 1 I.1': -- . d. L--- ... .... ------ -- ILla ..lal. --... ... li. ..: --l.. ... II:*.. t..t. . -- .I 1:*. ;-י .ls רוו .. -ו-ה ;"יוי 1.ל .. .....: 1. . . I'. . i ... l...I !!This is Structural theory. Formula: For #1 : r-3-c #2: r+m-2j #3: r+m-2jHi, please solve with FBD(label all the components)Rigid bar ABCD is supported by a pin connection at A and by two axial bars (1) and (2). Bar (1) is a 24-in.-long bronze [E = 16100 ksi] bar with a cross-sectional area of 1.18 in.2. Bar (2) is a 40-in.-long aluminum alloy [E = 9400 ksi] bar with a cross-sectional area of 2.03 in.2. Assume L1=24 in., L2=40 in., a=31 in., b=41 in., and c=12 in. Both bars are unstressed before the load P is applied. If a concentrated load of P = 36 kips is applied to the rigid bar at D, determine:(a) the normal stresses σ1σ1, σ2σ2 in bars (1) and (2).(b) the downward deflection vD of point D on the rigid bar.Q.2 Three bars each made of different materials are Steel Copper Ecu- 120 GPa ag = 12(10-)/C a = 21(10-")/"C a = 17(10-)C Acu = 515 mm? Brass connected together and placed between two E= 200 GPa E= 100 GPa walls when the temperature is T1 = 12°C. %3D Detemine the force exerted on the rigid A = 200 mm? Ape- 450 mm supports when the temperature becomes T2 %3D 18°C. The material properties and cross- 300 mm 200 mm 100 mm sectional area of each bar are given in the figure. (Marks = 10, CLO 3)OLSdVWKeSCILRGWuLiRQMPLO1cRtPJUm5qOc6FljPXoF2p3twYQ/formResponse PROBLEM 1: Compute for the force in each member of the truss shown in FIGURE 1 if the members are made of structural steel with a Modulus of Elasticity of 200 GPa and a Coefficient of Thermal Expansion of 12x10^-6. Indicate in your solutions if the force is in tension or in compression. Wrong direction=No credit FIGURE 1 50 kN 100 kN 2.0 20(x + siny) dx + (x cosy-zy) dyRigid bar ABCD is supported by a pin connection at A and by two axial bars (1) and (2). Bar (1) is a 34-in.-long bronze [E = 14300 ksi, a = 8.4 x 10-6/°F] bar with a cross-sectional area of 1.75 in.². Bar (2) is a 42-in.-long aluminum alloy [E = 10200 ksi, a = 11.9 × 10-6/°F] bar with a cross-sectional area of 2.00 in.². Both bars are unstressed before the load P is applied. Assume L₁=34 in., L₂=42 in., a=38 in., b=52 in., and c=16 in. If a concentrated load of P = 33 kips is applied to the rigid bar at D and the temperature is decreased by 85°F, determine: (a) the normal stresses in bars (1) and (2). (b) the normal strains in bars (1) and (2). (c) the deflection of the rigid bar at point D. (2) A B a (1) L₁ b C L2 DSEE MORE QUESTIONS