P = 20 kN Mv = 600 Nm.
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- σmax=? (principal stress value)The state of stress at a point is oy= -10 kpsi, oy=10 kpsi, oz=-20 kpsi, Tyv=5 kpsi, Tyz= 2 kpsi, and Tzx= -20 kpsi. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. What is the maximum shear stress for this case? The maximum shear stress is kpsi.2) A machine frame is made of steel having Sy = 400 MPa and Ssy = 250 MPa. When loaded in a test fixture, the stresses were found to vary linearly with load. Two points on the surface were found to be most critical. With a 4-kN test load, stresses at these points were: point a, 0₁ = 200 MPa, 0₂ = 100 MPa; point b, 0₁ = 150 MPa, 0₂ = -100 MPa. Compute the test load at which the frame will experience initial yielding according to the (a) maximum-normal-stress theory, (b) maximum-shear-stress theory, and (c) maximum-distortion-energy theory. Discuss briefly the relative validity of each theory for this application. Considering all the information available, what is your best judgment of the value of the test load at which yielding would actually be expected to begin? 02= 100 MPa a 02 02=-100 MPa b 02 0₁ = 200 MPa 01 = 150 MPa
- Tyx 3MP 8MPd 45 2MPA Determine the two principal stresses in MPdQ1. A (50) mm diameter shaft is made of steel with a yield strength of 440 MPa. There are two parallel keys available A (w = 10 mm, t 8 mm, L= 90 mm) and B (w 12 mm, t = 10 mm, L = 100 mm), suggest one of them to connect a pulley with the shaft. Use factor of safety (4). Assume the key has the same material of the shaft and the tensile and the compression stresses are equal.4 THIS IS HOLLOW- F = 548,000 lb -4.5 OD 3.75" ID # AISI 1020 Steel Tubing OD= OUTSIDE DIAMETER ID INSIDE DIAMETER 548,000 lb O TIMATE A= O= Will it fail?
- Example 2-4 For P=8.5kN, determine the allowable stress if the thickness t is 20 mm. Section Properties At the hole A, r = 12 mm; d = 52.8-24 = 28.8 mm; t = 20 mm; Anet = dt = 5.76 x 104 m² 5-12mm 9mm... -$2.8mm1. A collar is fitted as a tight fit on a solid shaft. In the measurement made before assembly, the outer diameter of the ring is dga=159.97 mm, the inner diameter is dgi= 100.03 mm, and the outer diameter of the shaft is dma= 100.048 mm. After assembly; a. What is the surface pressure between the shaft and the ring? b. What is the maximum shear stress? Given: Material pair steel/steel P E=2.1x10$ N/mm?, Tmax (1-Q¿)Find the size of 14 bolts required for a C.I. steam engine cylinder head. The diameter of the cylinder is 400 mm and the steam pressure is 0.12 N/mm2 . Take the permissible tensile stress as 35 MPa.
- Calculate the dimensions of the I-section of a connecting rod, stating any assumptions. using the data below: Maximum cylinder pressure = 3.15N/mm² Cylinder bore = 100mm Factor of Safety=6 Crank length 95mm Connecting rod length=380mm Take the constant a=7500.A part is loaded with a combination of bending, axial, and torsion such that the following stresses are created at a particular location:Bending: Completely reversed, with a maximum stress of 60 MPaAxial: Constant stress of 20 MPaTorsion: Repeated load, varying from 0 MPa to 70 MPaAssume the varying stresses are in phase with each other. The part contains a notch such that Kf,bending = 1.4, Kf,axial = 1.1, and Kf,torsion = 2.0. The material properties are Sy = 300 MPa and Su = 400 MPa. The completely adjusted endurance limit is found to be Se = 160 MPa. Find the factor of safety for fatigue based on infinite life, using the Goodman criteria. If the life is not infinite, estimate the number of cycles, using the Walker criterion to find the equivalent completely reversed stress. Be sure to check for yielding.Which of the following is true for an infinitesimal stress element? (T in the options below refers to tau, or shear stress) (a) Txy = Tyz (b) Txy = Tyx (c) Txy = Txz (d) Tx = Ty