The rigid beam ACE is subjected to the load P and suspended at points A, C, and E
The rigid beam ACE is subjected to the load P and suspended at points A, C, and E by three suspender bars AB, CD, and EF (see Figure 1). These three suspender bars are made of the same steel and have the same circular cross section with the same diameter of d=30 mm. The ultimate 2m stress of steel is σu=450 MPa and Young modulus is E=200 GPa.
(a) Using a factor of safety FS=1.5, determine the All maximum allowable load P so that the stresses in all three suspender bars will not exceed the allowable stress σall (σall = σu/FS) AND the maximum deflection Figure 1 will not exceed 2 mm.
(b) If bars AB, CD, and EF have different diameters, what should you do to determine the maximum allowable load P? Explain without calculation.
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The rigid beam ACE is subjected to the load P and suspended at points A, C, and E
practice exam for mechanic of material Problem #3: The rigid be m The rigid beam ACE...
practice exam for mechanic of material
Problem #3: The rigid be m The rigid beam ACE is u sed the suspender bars. Bars AB der hars Bars AB and EF are made of aluminum and har CD is made of steel. Each barha and bar CD is made of steel Fach har has a cross-sectional area of 900 mm, Ex - 200 GPa, E-70 GPa P-20 KN. al 2 m 5 -15 Fox 190 0 3 FAQ +15 Foc 390...
The rigid beam in (Figure 1) is supported by the three suspender bars. Bars AB and EF are made of aluminum and bar CD is made of steel.
The rigid beam in (Figure 1) is supported by the three suspender bars. Bars AB and EF are made of aluminum and bar CD is made of steel. Part A If each bar has a cross-sectional area of \(480 \mathrm{~mm}^{2}\), determine the maximum value of \(P\) if the allowable stress is \(\left(\sigma_{\text {allow }}\right)_{\text {st }}-190 \mathrm{MPa}\) far the steel and \(\left(\sigma_{\text {allow }}\right)_{\text {al }}-150 \mathrm{MPa}\) for the aluminum. \(E_{\text {st }}-200 \mathrm{GPa}, E_{\text {al }}-70 \mathrm{GPa}\).
The element ACE is rigid. The three suspender bars are made of the same material
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practice exam for mechanic of material
Problem #3: The rigid be m The rigid beam ACE is u sed the suspender bars. Bars AB der hars Bars AB and EF are made of aluminum and har CD is made of steel. Each barha and bar CD is made of steel Fach har has a cross-sectional area of 900 mm, Ex - 200 GPa, E-70 GPa P-20 KN. al 2 m 5 -15 Fox 190 0 3 FAQ +15 Foc 390...
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03(a) A reinforced concrete beam is acted on by a positive bending moment. reinforcement consists of 4 bars of 28 mm diameter. The modulus of elasticity is E 25 GPa for the concrete and E-200 GPa for the steel. The allowable stresses for the concrete and steel are ơ.-9.2 MPa and ơ.-135 MPa, respectively. Determine the maximum permissible positive bending moment. (10 marks) 625 mm 4 bars 28 mm -300 mm Figure Q3(a) 03(b) A simply supported beam that is...
shown in Figure 2. Two circular disks A and B are welded to the ends of both bars. The disks lie in planes disks A and B subjecting the bars to torsion. If the allowable maximum shear stress is 35 MPa and the allowable rate of twist is 3°/m for both bars, determine the smallest outer diameter (D, and Di) of both bars. The shear modulus of elasticity is 39 GPa to the axes of the bars. Forces 15 kN...
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