A flat bar (thickness b = 10 mm) with a shoulder fillet is loaded by a...
A ground steel shaft with a shoulder fillet has dimensions: D= 30 mm, d=25 mm and r= 2 mm. It is subjected to a combined nominal loading of 40 to 190 MPa bending stress and torsional stress of 20 to 70 MPa, which are in phase. Find the safety factor for infinite life if ultimate tensile strength is 965 MPa, state all assumptions.
The cantilever bar in the figure is made from AISI 1018 CD steel and is statically loaded with Fy = 800 N, and Fx = Fz = 0. The fillet radius at the wall is 2 mm with theoretical stress concentrations of 1.5 for bending, 1.2 for axial, and 2.1 for torsion.Sut = 440 MPa = 64 kpsi, Sy = 370 MPa = 54 kpsi. Analyze the stress situation in rod AB by obtaining the following information.a) Determine the precise...
Q6. (a) Three identical fatigue specimens (denoted A, B and C) are fabricated from a non-ferrous alloy. Each is subjected to one of the maximum- minimum stress cycles listed in Table 26 (the frequency is the same for all tests) Table 26 Specimen Omax (MPa) Omin (MPa) A +450 -150 +300 -300 +500 -200 Rank the three specimens in terms of their fatigue lifetimes (highest to lowest). Justify this ranking [5 marks] (b) A cylindrical tie rod of diameter 20...
(A) הודות ל 100 mm Consider the flat bar with shoulder joints shown in Fig. A which is subjected to a tensile force P = 58 kN. The bar is made of Aluminum 6061 having maximum tensile strength omax 290 MPa. NOTE: plots of stress concentration factors for different types of loading can be found on page 6. (a) Determine the radius r [mm] for the fillets. (b) An identical flat bar shown in Fig. B replaces the tensile load...
answer E,F,G and H please 2. A bar of steel undergoes cyclic loading such that max = 60 kpsi and Omin = -20 kpsi. For the material, Sut = 80 kpsi, 5y = 65 kpsi,ka = 1.107. ky = 0.858, ke = ka = k, = k, = 1, and f = 0.9. (a) Calculate the alternating stress. (2 points) (b) Calculate the meani median) stress. (2 points) (c) Calculate the fully corrected endurance limit. (6 points) (d) Calculate the...
PLEASE MAKE SURE THE ANSWERS MATCH THE ONES GIVEN BETWEEN PARENTHESES 1. Fluctuating loading. The cold-drawn AISI 1040 steel bar (S590 MPa, S 490 MPa) shown in the figure is subjected to the following different cyclic loading conditions. Estimate the fatigue factor of safety based on achieving infinite life (use Modified Goodman method) and the yielding factor of safety. If infinite life is not predicted, estimate the number of cycles to failure. The fatigue strength modification factor f 0.87. For...
The figure above shows a shaft mounted in bearings A and D and having pulleys at B and C. The shaft is 20 mm in diameter and made of AISI 1020 CD steel. The forces shown acting on the pulley surfaces represent the belt tensions. The shaft is concerned with yielding and fatigue failure. [Stress analysis) (1) Draw the free body diagrams and find reaction forces at A and D in the xy and xz planes. (2) Draw the shear force and moment...
A cylindrical bar of ductile cast iron is subjected to reversed and rotating-bending tests, test results (i.e., S-N behavior) are shown in Animated Figure 8.21. If the bar diameter is 8.52 mm, determine the maximum cyclic load that may be applied to ensure that fatigue failure will not occur. Assume a factor of safety of 2.21 and that the distance between loadbearing points is 55.3 mm. answer in N We were unable to transcribe this imageReferences Cycles to failure 3.2E...
material science s 4 (A) Alloy bar 3340N then Yolsa axi-2 (B) Provide two solutions to improve the fatigue life of a mechanical part (C) Draw or Describe the classification Scheme for the various types of composite matcrials, Le what are the different types of composite materials maximum allowable surface crack length if the surface energy of MgO is 1.0 /m2 (modulus of elasticity of MgO is 225 GPa)? 5 (A) A MgO component must not fail when a tensile...
Question 1 An end capped cylindrical pressure vessel with internal pressure p = fully supported at one end, is also subjected to a force F= 10 kN in the y direction at the other end as shown. The internal diameter of the pressure vessel is d= 160 mm and its thickness is t= 10 mm 3 MPa, assumed to be Determine the magnitudes of the stress components in x, y and z coordinates at points H and K and sketch...