Link 3 shown acts as a brace to support the 270-lb load. For buckling in the plane of the figure, the link may be regarded as pinned at both ends; for out of plane buckling both ends are fixed. If the link is to be made of CD 1020 steel and is 1-in wide, and considering only out-of-plane buckling, determine a suitable standard thickness using a design factor of 3. F = 270 lbf 3 ft 60 SOLUTION:

Assume that all members are pin connected and P = 5 kN. (Figure 1) Figure 3m-3m-3m- B Z 3 m 3 m- < 1 of 1 Part D Determine the force in member BH of the truss and indicate whether the member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. FBH = Submit Part E FCD = Submit Part F D- FCG = μÅ 5 Determine the force in member CD of the truss and indicate whether the member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case Submit Value Request Answer μA Value Request Answer μÅ Units Determine the force in member CG of the truss and indicate whether the member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in…

16-12 What force F can be applied to the system shown in the figure, governed by the 25 X 16-mm aluminum-alloy bar AB? The factor of safety on the Euler buckling load is to be 2.5. Assume the ends are pinned. E = 70 GPa.

The bell crack mechanism shown in Figure is in equilibrium for an applied load of F1- 15KN at A and F2 at C. The pin at B has a diameter of 12mm. The thickness of the bell crank is 8mm while the support bracket has a thickness of 6mm. The bell crank and the support bracket each have an ultimate bearing strength of 550 MPa. a = 300 mm; b = 150 mm ; c = 100 mm; e = 65° %3D %3D 30° (2) Bell crank B F2 b. a F1 H-8 mm BLI Bracket 6 mm mm Connection detail Determine the magnitude of the resultant reaction force acting at pin B. (in KN).

An axle is welded to the wall as shown in the figure.Other data:- The diameters D1 = 45 mm, D2 = 50 mm, D3 = 55 mm- The radii R1 = 3 mm, R2 = 2.5 mm- The notch sensitivity factor η = 0.5How big is the maximum tension in the axle and where does it occur?

Consider the structure shown in (Figure 1). Assume the cornections A, B, and C are pins. Suppose that P=5k, and P₂ = 4 k. w=300 lb/ft Figure 12ft Part C Cz. Cy= 1 of 1 Submit 15. ΑΣΦΑ Part A Request Answer Determine thee and y components of force at the connection A. Express your answers using three significant figures separated by a comma. VAX it vec Az. A₂= Submit B₂.B,- Determine the x and y components of force at the connection C. Express your answers using three significant figures separated by a comma. Submit Request Answer Part B Determine the z and y components of force acting on the member AB at the connection B. Express your answers using three significant figures separated by a comma. AEoit vec Ivec Request Answer ? ? k k ? k

If F=1kN,the magnitude of the vertical reaction force developed at the point B?

b. The steel compression strut BC, that supports the frame AB via pin-joint in Figure Q5b, is a steel tube with an outer diameter of D. = 48 mm and a wall thickness of t = 5 mm. Determine the factor of safety against elastic buckling if a distributed load of 10 kN/m is applied to the horizontal frame member AB as shown. Let Est = 210 GPa = 340 MPa. and y 1 m A C 10 kN/m 2 m Figure Q5b M SITI TEKNOLOGI MALA B MALAYS BR TEKNOLGI WIN

To calculate the maximum axial loads for a column based on yielding and buckling about both axes, and allowing for factors of safety. The critical load P for buckling of a column depends on the vertical distance between supports and how the column is connected to those supports. The length L in the T'EI formula Per =- is the distance between points of zero moment. For a pin- L2 supported column, this is the full height of the column. For a column that is not pinned at both ends, the points of zero moment are not at the supports. The equation for the critical load can be modified to use an effective length Le = KL, where K depends on the support conditions. For a column fixed at both ends, K = 0.5. For a column fixed at one end and pinned at the other, K = 0.7 (Figure 1). The equation for the critical load then becomes ’EI Pa (KL)²

Consider the steel truss and member cross-section presented in figures below. All the members of the truss have the same cross-section as shown in the figure to the right. They all also have a Young's Modulus of 210 GPa. What can the highest value of force F be before member AC fails by buckling? Force 1AN - 300 mm 40° 4 m $35 mm 7m 300 mm 8 m 35 mm 35 mm 35 mm Please provide your answer in kN.