5 Find the stresses in members BC, BD and CE for the truss shown in the Figure. Indicate the tension or compression. The cross-sectional area of each member is 1600 mm². (UT)
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- While drilling a hole with a brace and bit, you exert a downward force P = 25 lb on the handle of the brace (see figure). The diameter of the crank arm is d = 7/16 in. and it s lateral offset is b = 4-7/8 in. Determine the maximum tensile and compressive stresses e1, and e2respectively, in the crank.Repeat the previous problem using ? = 50° and stresses on the rotated element: sy1= 70 MPa, ??y1=-82 MPa, and tx1y1=-35 MPa.An elevated jogging track is supported at intervals by a wood beam AB (L = 7.5 ft) that is pinned at A and supported by steel rod BC and a steel washer at B. Both the rod (dBC= 3/16 in.) and the washer (dB= 1.0 in.) were designed using a rod tension force of TBC=415 lb. The rod was sized using a factor of safely of 3 against reaching the ultimate stress tru— 60 ksi. An allowable bearing stress sba= 565 psi was used to size the washer at B. A small platform HF is suspended below a section of the elevated track to support some mechanical and electrical equipment. The equipment load is uniform load q = 50 lb/ft and concentrated load WE= 175 lb at mid-span of beam HF. The plan is to drill a hole through beam ABaX £land install the same rod (dBC) and washer) dB) at both D and F to support beam HF. (a) Use s and to check the proposed design for rod DF and washer d,: are they acceptable? (b) Re-check the normal tensile stress in rod BC and bearing stress at 8 if either is inadequate under the additional load from platform HF. Re-design them to meet the original design criteria.
- At the nodes in the truss system given in the figure occurring displacement and the stress and reaction that occurs Find the forces.E=200GpaA=10000mm2Good day. I recently asked this question and I was wondering how to get the “b=0.866a” the one in red box. Thank u so much, having a hard time understanding it, also kinda urgent ty! The truss above is designed in such a way that all compression and tension members have an area of 400 mm^2 and 150 mm^2 respectively. If the force P= 59 kN and all the member lengths are equal, determine the stress (MPa) of member CEThe given plate below with width of 200 mm andthickness of 16 mm is to be connected to two plates ofthe same width with half the thickness by 20 mmdiameter rivets as shown. The rivet hole is 2 mm greaterthan the rivet diameter. Allowable tensile stress on netarea is 0.6Fy. Allowable bearing stress is 1.35Fy. plate: fy = 241 mpa fu = 4141 mpa rivet: fv = 152 mpa Determine maximum load P for block shear
- Member AC is shown in Figure is subjected to a vertical force of 3 kN.Determine the position x of this force so that the average compressive stressat the smooth support C is equal to the average tensile stress in the tierod AB. The rod has a cross-sectional area of 400 mm2 and the contact areaat C is 650 mm2.Three rods jointly support a 8kN load. Assumingthat there was no stress in the rods before theload was applied, find the stress in each rod.θ = 25oα = 20oProperties:Modulus ofElasticityCrosssectionalAreaSteel 200 GPa 250mm2Bronze 83 GPa 250mm2The force applied at the handle of the rigid lever causes lever to rotate 0.04 radians clockwise about the pin connection at B. if each cable is made of steel (E=200Gpa) and has a cross-sectional area of 3x10^-3m^2. Calculate a) The average normal stress in each cable? b) the force applied at E? The horizontal distance between points D and E is 200mm
- @2 The support consists of solid brass post surrounded by a steel tube. Before the load is applied, the gap between these two parts is | mm. Given the dimensions shown in the figure, determine the greatest axial load that can be applied 0 the rigid cap A if the maximum allowable stress in brass is (Guiin)se = 150 MPa and the maximum allowable stress in steel is (Gun ) = 200 MPa. E, = 200 GPa and Ey,= 100GPa.Two solid cylindrical rods (1) and (2) are joined together at flange B and loaded, as shown. The diameter of rod (1) is d1 = 1.66 in. and the diameter of rod (2) is d2 = 2.68 in. Determine the normal stresses in rods (1) and (2). Assume P = 17 kips and Q = 29 kips. Use positive for tensile stress and negative for compressive stress.A crane boom of mass 450 leg with its center of mass at C is stabilized bytwo cables AQ and BQ (Ae = 304 mm2 for each cable) as shown in thefigure. A load P=20 KN is supported at point D. The crane boom lies inthe y - z plane.ho(a) Find the tension forces in each cable: TAQand TBQ(kN}. Neglect themass of the cables, but include the mass of the boom in addition to load P.(b) Find the average stress (6) in each cable.