6. A three-block composite structure is loaded through rigid end plates, as s in the figure. What position x of the load results in the end plates being horiz All blocks have the same thickness dimension normal to the view plane. X I -20mm- 50 kN 2 -30mm 3 -20mm- E₁=200 G Pa E2=70 GPa E3-100 G Pa
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To find position of x such that end plates remain horizontal
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- 6. A three-block composite structure is loaded through rigid end plates, as shown in the figure. What position x of the load results in the end plates being horizontal? All blocks have the same thickness dimension normal to the view plane. -20mm- 50 kN -30mm 3 -20mm- E₁ =200 G Pa E2=70 GPa E3=100G PaDetermine the y-bar centroid of the composite figure shown. Where: x=4 ft 2 A 1 ft 1ftDetermine the x-bar centroid of the composite figure shown. Where: x=4 ft
- A composite bar is rigidly attached to the wall at A as shown in the figure. Axial loads are applied at the positions indicated. 3 m 2.5 m C 1200 kN 900 kN 80mmØ 100mmØ E = 83 GPa Bronze E = 200 GPa Steel Which of the following most nearly gives the deformation of C? a. -0.7855 mm О Ъ. +0.8575 mm c. +0.7855 mm o d. - о.8575 mmQ.2) Calculate the ỹ of the centroid and Iş (with respect to centroid) for the composite area shown in figure. 40 cm 14 cm 20 cm 18 mmThe composite bar shown is fixed at the ends and is subjected to the axial load P shown. If the aluminum is stressed to 10 ksi, find the force P and the stress in the steel. 10in. 15in. Aluminum Steel A=1.5 in? E=10x10°psi A=2.0 in? 6 E=30x10°psi 6
- Locate the centroid of the composite areas shown in figures below:q7 A steel bar 2 m long, 20 mm wide and 15 mm thick is subjected to a tensile load of 30 kN. If Poisson's ratio is 0.25 and Young's modulus is 200 GPa, an increase in volume will be (b) 150 mm3 (d) 130 mm3 (a) 160 mm3 (c) 140 mm3The cross-section of a composite beam made of aluminium and steel is shown in the figure. The moduli of elasticity are E_{a} = 75GPA and E_{s} = 200 GPa. Under the action of a bending moment about z-axis that produces a maximum stress of 50 MPa in the aluminium, what is the maximum stress o in the steel? %3D %3D Aluminium Steel: 30 mm 1- - ww 08
- X Your answer is incorrect. Two polymer bars are connected to a rigid plate at B, as shown. Bar (1) has a cross-sectional area of 1.42 in.? and an elastic modulus of 2180 ksi. Bar (2) has a cross-sectional area of 1.139 in.? and an elastic modulus of 4150 ksi. Assume L;-23 in., L2-41 in., Q-6.7 kips, P-3.7 kips, and R-14.1 kips. Determine the horizontal deflection of end Crelative to end A. R (1) (2) P L1 L2 Answer: UCIA - i 0.0725 in.The composite bar in the figure is stress-free before the axial loads P₁ and P2 are applied. Assuming that the walls are rigid, calculate the stress in each material if P₁= 150 kN and P₂ = 90 kN. Aluminum Steel Bronze A = 900 mm² A = 2000 mm² A = 1200 mm² E = 70 GPa E = 200 GPa E = 83 GPa P₁ 500 mm P₂ 250 mm 350 mm (a) Determine the stress in the aluminum. (b) Determine the stress in the steel. (c) Determine the stress in the bronze.Problem # 2: For the composite area shown, calculate the moment of inertia about X and Y ахes. 95 mm Ŕ = 60 mm 55 mm 35 mm 70 mm 80 mm 125 mm