Plastic stage is when all elements of a steel section is in yielding condition and reaches its utlimate strength before it collapses without lateral torsional buckling. O True O False
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- The light rigid bar ABCD shown is pinned at C and connected to two vertical rods. The bar was initially horizontal, and the rods were stress-free before the load P = 20 KN is applied. %3D Steel E200 GPa A-600mm L1 m 2.0 m 0.6 m 1.5 m Pa20 KN Aluminum E-70 GPa A=900mm L-1.5 m What is the ratio of the deformation of steel to deformation of aluminum?PROBLEM 1) An aluminum bar carries the axial loads at the positions shown. If E=70GPA, compute the total deformation of the bar. Assume that the bar is suitably braced to prevent buckling. 0.4m D 10KN 0.8m 0.4m B 5KN 0.6m AL 20KN What is the deformation &pE in mm? A=800 mm² A=1,200 mm²Situation No. 2 A bronze bar is fastened between a steel bar and an aluminum bar as shown below. Axial loads are applied at the positions indicated. Find the largest value of P that will not exceed an overall deformation of 3.0 mm, or the following stresses: 140 MPa in the steel, 120 MPa in the bronze, and 80 MPa in the aluminum. Assume that the assembly is suitably braced to prevent buckling. Use Est = 200 GPa, Eal = 70 GPa, and Ebr = 83 GPa. Bronze Steel A = 480 mm? Aluminum A = 650 mm A = 320 mm 3P 4P 2P 1.0 m 2.0 m 1.5 m
- Assume the transformed steel section reaches its allowable bending stress first. Calculate the magnitude of the allowable bending moment that can be applied in this case. Answer: M- i Ib-in.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 mmSolve for the design strength. Is it stable or not?
- A 31 mm radius Steel is subjected to tensile test. Determine its yield and ultimate load it can carry in KN when the steel grade is 60 and 40. Determine also it's elongation using the stresses if the modulus of elasticity of steel is 231 GPa. Determine also the weight if the length is 31 m and 03 m. Need it asap.Q/ Find the Maximum stresses in Steel and Aluminum. Est= 210G pa and E al%3D 70 G pa ? W= 15 Kn.M 120mm 5m Al steel 60mm 140 mmA 26-foot-long structural steel bar is being tensed along its centroidal axis. Point B is being tensed by 180 kips of force and point C is being tensed by 121 kips of force. The bar has a rectangular cross-section with a height of 3.6 inches and width of 2.8 inches. The steel is HSLC steel with a yield stress, oy = 50 ksi and modulus of elasticity, E = 30,000 ksi. Show all work and any assumptions clearly. Record your answers on the answer key. Complete the following: ): Calculate the axial stress in sections AB and BC of the beam. Does the calculated stress in either section exceed the yield stress of the steel? Calculate the deformation in sections AB and BC of the beam. What is the total axial deformation that the beam experiences? What is the final length of the beam? Calculate the factor of safety that this structural bar was designed for. w = 2.8 in. A B 180 k C 121 k Answer Key σ > Gy Yes or No * 18 ft 8 ft Axial Section Stress (ksi) AB BC Total Deformation, 8 (in) Final Length…
- THEORY OF BENDING TEST OF REINFORCING STEELBARA 8 mm radius Steel is subjected to tensile test. Determine its yield and and ultimate load it can carry in kN when the steel grade is 60 and 40. Determine also its elongation using the stresses if the modulus of elasticity of steel 218 GPa. Determine also the weight if the length is 8 m and 18 m.Hint: There are two 8 mm radius Steel.A 31 mm radius Steel is subjected to tensile test. Determine its yield and ultimate load it can carry in KN when the steel grade is 60 and 40. Determine also it's elongation using the stresses if the modulus of elasticity of steel is 231 GPa. Determine also the weight if the length is 31 m and 03 m.