A non-rotating 1.50-inch diameter solid steel rod with its surface machined under a fully reversed axial load of 25 kip. The yield and ultimate strengths of the material are 50 ksi and 90 ksi respectively. The Marin factors for temperature and reliability are given as unity, if the fatigue stress concentration factor is 2, find the following: a) The maximum and minimum stresses b) The mean and alternating stresses c) The corrected endurance limit, S. d) the safety factor by Goodman line e) If the axial load is a constant of 25 kip, find the safety factor by the maximum shear stress theory (MSST)

A non-rotating 1.50-inch diameter solid steel rod with its surface machined under a fully reversed axial load of 25 kip. The yield and ultimate strengths of the material are 50 ksi and 90 ksi respectively. The Marin factors for temperature and reliability are given as unity, if the fatigue stress concentration factor is 2, find the following: a) The maximum and minimum stresses b) The mean and alternating stresses c) The corrected endurance limit, S. d) the safety factor by Goodman line e) If the axial load is a constant of 25 kip, find the safety factor by the maximum shear stress theory (MSST)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A 6 mm steel wire is 5 m long and stretches 8 mm under a given load. If modulus of elasticity is 200 Gpa, find the load applied. A. 7 KN B. 8 KN C. 9 KN D. 10KN Please solve the Problem elaborately and Refer Machine Elements and Stresses Equations from the figures or use other shortcut Methods you have or you may Solve both or in more different methods the better ?. Your solution will be use as reference for my Future Board Exam preparation/review/study. Thank you so much dear your work will be appreciated much and rated excellently.
A sheet metal cutting machine cuts the sheet metal via shear force, V as shown in Fig. 1. The crosssection of sheet metal is rectangular with width, b = 3m and thickness, d = 5mm. The sheet metal ishaving yield strength σy = 220 MPa; Young’s modules, E = 200 GPa and Poisson’s ratio, ν = 0.3.Conduct the following analyses at the state of stress when maximum stress reaches σy and beforeshearing commences. a. At the MOST CRITICAL POINT of the sheet metal, calculate the stress state and sketch thecorresponding stress element b. If SAFETY FACTOR = 2 is considered, what is the MINIMUM shear force, V required tocut the sheet metal according to following criterions? i. ii. Tresca criterion?von Mises criterion? c. Sketch the YIELD LOCI for both cases above. d. As a sheet-metal engineer, which failure criterion in (b) will you use to determine the cuttingshear force? Explain the reason for your answer.
A sheet metal cutting machine cuts the sheet metal via shear force, V as shown in Fig. 1. The crosssection of sheet metal is rectangular with width, b = 3m and thickness, d = 5mm. The sheet metal ishaving yield strength σy = 220 MPa; Young’s modules, E = 200 GPa and Poisson’s ratio, ν = 0.3.Conduct the following analyses at the state of stress when maximum stress reaches σy and beforeshearing commences. (Need answer Question c) & d) c. Sketch the YIELD LOCI for both cases above. d. As a sheet-metal engineer, which failure criterion in (b) will you use to determine the cuttingshear force? Explain the reason for your answer.
If a plate has to be manufactured by punching, with diameter d of 25.4 mm, thickness t 10 mm, and material's shear strength Ss = 115 MPa. How much minimum SHEARING force P in kilogram force must be applied TOWARDS THE PLATE to punch a hole? (Note: a. stress area is the area of failure, b. material is punched halfway down) Answer asap. Thanks . I will rate helpful
Solid Mechanics A steel shaft in the form of a solid body circular rod or a circular tube can be manufactured. Torsion of spindle of 1200 N.m it is required to carry the moment. Anti-slip protection for shaft material stress 40 MPa, the largest permitted unit torsion angle in the bar 0.750 / m and the shear modulus of the steel is G = 78 GPa. a) Find the required diameter d0 for a solid circular shaft. b) Required for a ring-section shaft whose thickness is one tenth of the outer diameter Find the outer diameter d2. c) Diameter ratios (d2 / d0 for ring and solid section shafts. Find the weight ratios with the ratio).
Civil engineers often use the straight-line equation, = b 0 + b 1x, to model the relationship between the shear strength y of masonry joints and precompression stress, x. To test this theory, a series of stress tests were performed on solid bricks arranged in triplets and joined with mortar. The precompression stress was varied for each triplet and the ultimate shear load just before failure (called the shear strength) was recorded. The stress results for n = 7 resulted in a Coefficient of Determination of 0.8436. Given that r 2= 0.8436, give a practical interpretation of r 2, the coefficient of determination for the least squares model. a. We expect to predict the shear strength of a triplet test to within about 0.8436 tons of its true value. b. About 84.36% of the total variation in the sample of y-values can be explained by (or attributed to) the linear relationship between shear strength and precompression stress. c. In repeated sampling, approximately 84.36% of…
A simply supported shaft is shown. A constant magnitude distributed unit load p is applied as the shaft rotates subject to a time-varying torque that varies from Tmin to Tmax. For the data given, find the diameter of shaft required to obtain a safety factor of 2 in fatigue loading if the shaft is steel of Sut = 745 MPa and Sy = 427 Mpa. Assume no stress concentrations are present. Dimensions: L = 8 cm, a = 4 cm, b = 8 cm, p = 1000 N/cm, Tmin = 0 N-m, Tmax = 2000 N-m STEP-BY-STEP don't understand English very well, so please write in clear letters. please!
A 20 m rod is stretches to a strain of 0.001. Determine the deflection of the rod. A. 20 mm B. 25 mm C. 30 mm D. 35 mm Please solve Problem elaborately and Refer Machine Elements and Stresses Equations from the figures or use other shortcut Methods you have or you may Solve both or in more different methods the better ?. Your solution will be use as reference for my Future Board Exam preparation/review/study. Thank you so much dear your work will be appreciated much and rated excellently.
The shaft below is an engine component that is rotating. It is machined from an unknown ductile material with a measured ultimate tensile strength of 700 MPa. Answer the questions below assuming a desired reliability of 99% and a fatigue fraction, f, of 0.9. Round all values and answers to 2 decimal places Determine the maximum stress in the shaft due to the applied loading (hint: what is the maximum moment?) Estimate the endurance limit (hint: what is the relationship between Se and Sut and don’t forget any necessary modifying factors.) Determine the number of cycles to failure.
An input shaft of a gearbox with motor power P = 7 kW and rotation number n = 1300 rpm. The diameter of an input shaft is d = 20 mm and its material is 16MnCr5. A force of F = 2800 N forces the shaft due to the operation of a gear wheel connected with a wedge on the input shaft. The distances of the gear from the bearings are given as L₁ = 40 mm and L2 = 60 mm. In the most dangerous section, you are required to check the strength according to the S = 3 safety factor. If the section is unsafe in terms of strength, what changes would you make in the design to make it safe? (The surface of the spindle is machined as fine chips, reliability poor Kg = 1.).
A torque of 40,000 N.m is applied to a 10 cm diameter shaft. What is the factor of safety of a steel(Sy = 410 MPa) if its shear strength is one-half of its capacity in tension?
A 0.013 m diameter, 0.5 m long cylindrical metal bar is subjected to a compressive force of 8,500 N. This load does not exceed the yield strength of the material. Determine its diameter under this load. You will need some of the following properties of the metal to solve the problem: modulus of elasticity = 207 GPa, Poisson’s ratio = 0.30, yield strength = 180 MPa, tensile strength = 380 MPa, ductility = 23% elongation.