A countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives power from...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives power from a motor through a belt with the belt tensions shown. The power is transmitted through the shaft and delivered to the belt on pulley B. Assume the belt tension on the loose side, T at B is 17% of the tension on the tight side, T2. The shaft rotates at a constant speed, has a constant diameter, and is made from cold-drawn AISI 1018 steel. Calculate the minimum factor of safety, n for fatigue based on infinite life, using the modified Goodman criterion. Give your answer to 3 significant figures. Hints: Look for the maximum bending moment (need to draw shear and bending moment diagrams) Calculate the maximum bending stress and torsional stress Determine oa, Om, Ta and Tm (note that bending is completely reversed and torsion is steady) Obtain the Von Mises stresses for alternating and mean stresses (oa', Om') Calculate the endurance limit, Se Finally, find out the Modified Goodman factor of safety for fatigue Fo 01 500 lbf 75 lbf 18 in 8-in dia. 1-in dia. T B 12 in 10-in dia. A countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives power from a motor through a belt with the belt tensions shown. The power is transmitted through the shaft and delivered to the belt on pulley B. Assume the belt tension on the loose side, T at B is 17% of the tension on the tight side, T2. The shaft rotates at a constant speed, has a constant diameter, and is made from cold-drawn AISI 1018 steel. Calculate the minimum factor of safety, n for fatigue based on infinite life, using the modified Goodman criterion. Give your answer to 3 significant figures. Hints: Look for the maximum bending moment (need to draw shear and bending moment diagrams) Calculate the maximum bending stress and torsional stress Determine oa, Om, Ta and Tm (note that bending is completely reversed and torsion is steady) Obtain the Von Mises stresses for alternating and mean stresses (oa', Om') Calculate the endurance limit, Se Finally, find out the Modified Goodman factor of safety for fatigue Fo 01 500 lbf 75 lbf 18 in 8-in dia. 1-in dia. T B 12 in 10-in dia.
Expert Answer:
Related Book For
Shigleys Mechanical Engineering Design
ISBN: 978-1121345317
9th edition
Authors: Richard G. Budynas, J. Keith Nisbett
Posted Date:
Students also viewed these mechanical engineering questions
-
For the problem specified in the table, build upon the results of the original problem to determine the minimum factor of safety for fatigue based on infinite life. The shaft rotates at a constant...
-
For the problem specified in the table, build upon the results of the original problem to determine the minimum factor of safety for fatigue based on infinite life. The shaft rotates at a constant...
-
Rennie Plant Service completed a special landscaping job for Brenton Company. Rennie uses ABC and has the following predetermined overhead allocation rates The Brenton job included $1,500 in plants;...
-
What are the parameters for a normal curve?
-
If d is true, e is false, and f is false, which of the following expressions is true? a. e OR f AND d b. f AND d OR e c. d OR e AND f d. two of the above
-
Show that a value of \(\xi=0\) reduces the Halpin-Tsai equation (Equation 3.63) to the inverse rule of mixtures Equation 3.40, whereas a value \(\xi=\infty\) reduces it to the rule of mixtures...
-
Project K has a cost of $52,125, its expected net cash inflows are $12,000 per year for 8 years, and its cost of capital is 12 percent. (Hint: Begin by constructing a time line.) a. What is the...
-
Create the code with JAVA. Welcome To The SENTENCE SCAN PROGRAM! ******** Please enter the sentence to scan: My Quiz2 was graded. Here are some data about your sentence: Word 1 has 2 characters. Word...
-
CONCEPT VOCABULARY AND WORD STUDY from Mrs. Dalloway Virginia Woolf WORD LIST solemnity leaden dejected A. DIRECTIONS: In each of the following items, think about the meaning of the italicized word...
-
In your assigned reading in Week 1, you learned about projects and project management and how these add value to an organization. This week, you learned about the environment in which a project...
-
Multi-Star, Incorporated, had sales of $890,000; cost of goods sold and operating expenses of $450,000 and $225,000, respectively. and 10,000 shares of common stock outstanding. Calculate the amount...
-
You have been asked to identify a WHS training need and over 6 weeks implement the solution to this training need and monitor and report on the outcomes of the training. So, firstly, what is the...
-
Supply chains typically generate massive amounts of data. Business Analytics and Business Intelligence help to make sense of all this data, uncovering patterns and generating insights for smarter,...
-
The Quick Drop 100 transition team has met to identify project risks, explore contingency plans, and assign owners to watch for symptoms and address the risks. The team surfaced the following...
-
6. A particle moves through a gas at a speed of 15 km/s. How far will it move in 5.5 s? 7. A solution of barium nitrate contains 61.2 g per litre of solution. How many grams of barium nitrate is...
-
Express mass density in kg/m3 and weight density in lb/ft3. 1. Find the mass density of a chunk of rock of mass 215 g that displaces a volume of 75.0 cm3 of water. 2. A block of wood is 55.9 in. x...
-
In the figure for Prob. 161, the inside rim diameter is 11 in and the dimension R is 3.5 in. The shoes have a face width of 1.25 in. Find the braking torque and the maximum pressure for each shoe if...
-
For each section illustrated, find the second moment of area, the location of the neutral axis, and the distances from the neutral axis to the top and bottom surfaces. Consider that the section is...
-
Listed in the tables are six springs described in customary units and five springs described in SI units. Investigate these squared-and-ground-ended helical compression springs to see if they are...
-
A cone shaped recess at the top of drilled hole can be made by (a) countersinking (b) counterboring (c) taper drilling (d) grooing.
-
Climb milling is chosen while machining because (a) the chip thickness increases gradually (b) it enables the cutter to dig in and start the cut (c) the specific power consumption is reduced (d)...
-
Which of the machine tools can be used for boring ? 1. Lathe 2. Drilling machine 3. Vertical milling machine 4. Horizontal milling machine. (a) 1,2,3, (b) 1,3,4 (c) 2 and 4 (d) 1, 2, 3, 4
Study smarter with the SolutionInn App