Q4) A cast iron beam is of I – section as shown in Figure (3). The beam is simply supported on a span of 5 m. If the tensile stress is not to exceed 20 N/mm2, find the safe uniformly load which the beam can carry. Find also the maximum compressive stress. I 80 mm- 20 mm 3 169.34 mm 200 mm 2) 20 mm A 90.66 mm 40 mm 100 mm Figure (3)
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- 2) A solid rod with the given dimension shown in Fig. Axial loads are applied at the positions indicated. Find the f a) The max Compressive stress in the system P-60 kN Aluminum A=400 mm b) The max Tensile stress in the system P-60 kN Steel A = 500 mm² Bronze A-200 mm² 4P 2.5 m 1.5 m 2.0 m 2PA cast iron beam is of I– section as shown in Figure (3). The beam is simply supported on a span of 5 m. If the tensile stress is not to exceed 20 N/mm2, find the safe uniformly load which the beam can carry. Find also the maximum compressive stress. -80 mm- 20 mm 169.34 mm 200 mm 20 mm N 90.66 mm 40 mm 160 mm Figure (3)For the state of stress shown, determine (a) the principal stresses, (b) the maximum in-shear stress. Sketch such stresses in a two- element format. 60 MPa 90 MPa Lx 30 MPa
- The 200-mm square aluminum block supports a compressive load of 300 kN. What is the normal stress acting on section a–a in MPa What is the shearing stress acting on section a–a in MPa The lapbelt assembly is to be subjected to a force of 800 N. What is the required thickness t in mm. of the belt if the allowable tensile stress for the material is 10 MPa?The rigid bar AB, attached to two vertical rods as shown in Fig. is horizontalbefore the load P is applied. Determine the maximum value for P If the stress must not exceed: 160 MPa for steel and 80 MPa for Bronze. Then determine the vertical movement of P. STEEL Lm A-400 mm E-200 GPa BRONZE L-5m A-500 mm E-80 GPa 3mThe rigid bar of negligible weight is supported as shown. The assembly is initially stress-free. Find the stress in each rod if the temperature rises after a load W = 120 kN is applied. Steel rod Bronze rod A (mm²) 350 1500 a (/°C) 11.7 x 10-6 18.9 x 10-6 E (GPa) 200 83 O Steel 1.5 m 1.0 m- 2.5 m 9. Determine the stress at the steel rod in MPa when there is a temperature rise of AT = 36 °C. W Bronze 3 m 1.5 m-
- PROBLEM SOLVING 2 The plates are connected by 12-mm bolts in Figure 5. The maximum axial stress of each plate is 20 MPa and the maximum shear stress of each bolt is 14 MPa. Determine the maximum Force F that can be applied to the plates. F F 340 mm D 340 mm Figure 5: Bolted Plates F 150 mm F 50 mmThe 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. E200 CPa E1m 2.0 m 0.6m 1.5 m VP-20 KN Aluminum E-70 GPa A=900mm2 L-1.5 m What is the axial stress at steel rod in MPa?A cast iron beam is of I-section as shown in figure below. The beam is simply supported on a Span of 5 meters. If tensil Stress is not execed 20 N/mm², find the safe uniformly load which the beam can carry. find also the maximum Compressive Stress. 25mm k120mm. 300mm T 50mm ↓ B 25mm ← 240- 키
- A 20-mm-thick plate is bolted to the flange of a T-beam to form a 200 mm 20 mm built-up beam. If the beam is subjected to a vertical shear force of V = 200 kN, determine (a) the maximum shear stress in the beam, 10 mm 300 mm (b) the required spacing s of the bolts. The diameter of each bolt is 19 mm, and the allowable average shear stress in the bolts is 140 MPa. 10 mmThe screw clamp shown in the figure applies a P = 500 N pressing force to the wooden blocks between the jaws. In this case; a) Calculate the greatest tensile and compressive stresses occurring in the section a-a shown in the figure. b) Show the distribution of normal stresses across the section height. (draw) c) Since the clamp material has tensile strength (apull) safety = 50MPA and compression safe stress (opress) safety = 80MPA, what is the great compressive load (P) that can be applied without damaging the a-a section? %3D %3D (Please solve in detail and according to engineering rules.) Material mechanics Sectional view a-a - 20mm T. 183mm 40mmSIMPLE STRESSES 340 mm 3. Two plates are connected by bolts as shown in the figure. Compute the maximum force F that can be applied to the plates. The allowable axial stress of each plate is 150 Mpa. The allowable shear stress of each bolt is 50 MPa. The diameter of each bolt is 16 F F 150 mm mm. 50 mm 340 mm