A steel shaft in bending has an ultimate strength of 1400 MPa and a shoulder with...
S = 200 kpsi A steel shaft in bending has an ultimate strength of 690 MPa and a shoulder with a filler radius of 3 mm connecting a 32 mm diameter with a 38 mm diameter. Estimate the fatigue stress concentration factor, Kf, using Figure 6-20. 0 0.5 1.0 3.0 3.5 4.0 1.0 Notch radius r, mm 1.5 2.0 2.5 (1.4 GPa) (1.0) (0.7) 0.8 150 (0.4) 100 0.6 60 Notch sensitivity a 0.4 Steels Alum, alloy 0.2 0 0...
please show all work 2. (12 pts) A shaft w ith a step in diameter is made of SAE 1045 steel. It is required to withstand 107 cycles kN. The shaft has 2(a), di 25 mm, d2-30 mhm, and ρ :0.625 mm. Use Peterson's fitted on (equation below) for a value of a. Modification factors shall be applied for the following of an axial force amplitude P, 16kN applied along with a mean force of Pm dimensions, as in Figu...
Problem 2: A hot-rolled shaft shoulder has a large diameter D is 45 mm, the small diameter d is 30 mm, and the fille (notch) radius is 3 mm. The bending moment, and the steady torsion moments are 100 N.m, and 75 N. respectively. The reliability goal for the endurance limit is 0.90. If the shaft is made of AISI 1030 hot-roll steel, (a) Determine the fatigue stress concentration factors (Ks, and Ks). (b) Determine endurance limit (Se). (c) Determine...
Question 1 Shaft AB is supported at B by a roller support and at A by a pin support as well as a spline that prevents rotation around x axis. The diameter of the shaft is D. At cross section A-A there is a relief groove where the minimum diameter is d. Two loads, F, and one torsion moment, T, are acted on the shaft. The material of the shaft is aluminum 7075, Sy = 495 MPa. Also known: L=630...
1) For the loading of the beam shown below, determine the maximum normal and shear stress at the wall if Kt for bending is 2.7 and K, for torsion is 2.3 If we use a steel with an Sy 600 MPa, what is the "safety factor" if we only consider the maximum normal stress? Notice the bending moment, start with a cross product to determine the moment at the wall. The vector R-[0.25,0,0.3] in meters 200 mm 25-mm-dia. round rod...
A 1020 steel shaft 3. A 1020 steel shaft has a corrected real endurance limit of Se 40 ksi and a tensile strength of Sut 64 ksi. The shaft is loaded in bending and torsion such that Ma 500 lbf.in, and Tm 300 lbf.in, Mm Ta 0. The stress concentration factors were determined to be Kr 2.25, and Kf 1.75. Provided the design engineer choose a diameter of d 1.0 in, determine the factor of safety n of the shaft...
Can someone please provide neat, correct work. Experts only please. Thank you I 2 in 11 in in Problem Statement The shaft shown is rotating under loads F1 : 1 8.F2= 1.9 klbf. Dimensions are c 8, e 8.g 8.h-10, 10 n = 3 in. All fillets have l 16 radius. The critical location is at x= 10.5 point Q where the moment is high, the diameter small, and the fillet causes a stress concentration. The material is cold drawn...
Sm 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 Omar = 290 MPa. NOTE: plots of stress concentration factors for different types of loading can be found on page 6 (a) Determine the radiusr [mm] for the fillets. (b) An identical flat bar shown in Fig. B replaces the tensile load with a bending moment...
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...
Name: Week 7 HSCI 390L: Hypothesis Testing Worksheet 1. It has been reported that the average credit card debt for college seniors is $3262. The student senate at a large university feels that their seniors have a debt much less than this. so they conduct a study of 50 randomly selected seniors and finds that the average debt is $2995, and the population standard deviation is $1100. Let's conduct the test based on an alpha level of 0.05. Complete the...