Question
Problem 1: A component shown in the figure is subjected to cyclic force P. Find the...
Problem 1: A component shown in the figure is subjected to cyclic force P. Find the state of the stress at point A in the component. Show stress in an element Pmax-10000 lb 2" 1.75 Pmin-1000 lb Problem 1 If the component is machined from AISI 1040 HR steel. What is the safety factor against fatigue failure for infinite life. How much load can be increased (Pma10000K and Pin-1000K) to have the component survived at least 104 cycles? Find value of K
Answers
Pmax- lo000lb P Pmin--1000lb d175" D-2". Given material: AlsI 1040 HR steel Assuming the steel to be quenched and tempered From Design- Databook , for "Notch sensivity () .93 For上='/g" T-75" 0.0714旱ー=1-143 → Stress concentration 뎌 Kt-1 . → kf- Fatigue stress concentration factor 2069 093-kf 2-15-1 : Stresses at A Ormax = Kr. fnax = 2.069x loooo = 8601.902 Rsǐ 4Xd2T452 Gmin= kf.fmin -20698-100--860-BoPsi TT/4x2/4 1-152 State of stress at A Ơmax=S60l.go2 Asi For AISI 1040-HR Steel : Sut = 76000fs1 520MPa For steels : se =05 Sut = 05 x 76000 = 38000 Ksi Calculation of corrected endurance limit For machine surface finish b-0265 a=4.51 Surface finish factora (Sut)b 4.51x (520) Ka 0.859Size factor Kp 08 for d 175 Assuming 99% reliability Ke 0 814 0 859x 0.85x 0 814x 38000 22584.99 Psi For infinite life Ơamp ":"Se FOS 0amp max-0min8601 902 +860 190 471-046 Psi 2 2 4731 04622584.99 Fos Fos 4-773 For life oF atleast 10t cycles From similar AS 4-3 0-9 6-3 ogto(sut)-logi,se logidse 3 1%;0(09x 76000)-len(22584 99) 47276, 3604 PSİ cycles iF oamps Sp 1/4 42 2069x Pamp 47276-3604 Pamp S 54960 354 lb T/4X 1752 Amplitude oF load can be Increased from 5500 lb to 54960 354 Ib for survilp at least 104cydes Once amplitude tses than 54360-354 lb component car'b Survive upto l04 cycles and win fail earlier-
Similar Solved Questions
1 answers
Question 25 (1 point) A can of tuna has a diameter of 8 cm and height...
Question 25 (1 point) A can of tuna has a diameter of 8 cm and height of 4 cm. Tuna cans are packaged in rectangular boxes with 27 cans in each case. Approximately, how much tuna does one can hold? O 64 cm 201 cm O 150 cm O 88 cm...
1 answers
Dy Consider the following diffraction pattern, in which the five lowest order peaks are labelled with...
dy Consider the following diffraction pattern, in which the five lowest order peaks are labelled with their Miller Indices. (200) (220) (420) (400) (22) 80 70 60 50 40 30 20 2 θ (degrees) Assuming that the crystal only contains a single type of atom, is the crystal body centred cubic (BCC) or ...
1 answers
Draw an analogy between health insurance and taxi leasing in terms of moral hazard. In each...
Draw an analogy between health insurance and taxi leasing in terms of moral hazard. In each case, highlight the price distortion, the behavior change due to price sensitivity, the information asymmetry, and the form of the social loss....
1 answers
What is property ownership and environmental risks in business, and how insurance may be used to...
What is property ownership and environmental risks in business, and how insurance may be used to mitigate or absorb them. How should a business assess environmental risks associated with property ownership? What steps should it take to ensure a complete consideration of those risks?...
1 answers
6. -/1 points SerPSE10 25.3.P.011.MI. My Notes Ask Your Teac 180 UR) Four capacitors are connected...
6. -/1 points SerPSE10 25.3.P.011.MI. My Notes Ask Your Teac 180 UR) Four capacitors are connected as shown in the figure below. (Let C 3.00 20.0 6.00 H O (a) Find the equivalent capacitance between points a and b. (b) Calculate the charge on each capacitor, taking Avab - 10.0 V. 20.0 pF capacitor 6...
1 answers
Hope recieres an 18,500 scholarship from Grambling state University. The university Specifies that 8,500 is for...
Hope recieres an 18,500 scholarship from Grambling state University. The university Specifies that 8,500 is for tuition, books, supplies and equipment, while $10,000 for room and bored. In addition. Hope works part-time at the Campus library and earn $5000. What is Hopes gross income?...
1 answers
Diagram and label the cell wall structure of both a gram positive bacterium and a gram...
diagram and label the cell wall structure of both a gram positive bacterium and a gram negative bacterium...
1 answers
A parallel plate capacitor has a capacitance of 7 microfarad when filled with a dielectric. The...
A parallel plate capacitor has a capacitance of 7 microfarad when filled with a dielectric. The area of each plate is 1 m and the separation between the plates is 0.58x10-5 m. What is the dielectric constant of the dielectric? Equation: C = " A, 60 = 8.85 10-12 m?...
1 answers
A person is reading a newspaper using the light from an unshaded 100-watt light bulb which...
A person is reading a newspaper using the light from an unshaded 100-watt light bulb which is placed on a table 3 meters away. If the table is now moved to a distance of 9 meters away from the person, the brightness of the light on the newspaper is now _________ the brightness before? Answer choices...
1 answers
A particular fruit's weights are normally distributed, with a mean of 623 grams and a standard...
A particular fruit's weights are normally distributed, with a mean of 623 grams and a standard deviation of 36 grams. The heaviest 15% of fruits weigh more than how many grams? give answer in grams....
1 answers
A 4 m 8 nC North West East 3 m South -Inc 10 nc Three charged...
A 4 m 8 nC North West East 3 m South -Inc 10 nc Three charged particles are placed at three corners of a rectangle as shown in figure. What is the net electric field acting at the fourth corner, shown by Point A? O 9.7 N/C, 36.7° south of west 13.4 N/C, 57.5° south of west 22.5 N/C , 4.6°...
1 answers
The projected benefit obligation and plan assets were $80 million and $140 million, respectively, at the...
The projected benefit obligation and plan assets were $80 million and $140 million, respectively, at the beginning of the year. Due primarily to favorable stock market performance in recent years, there also was a net gain of $38 million. On average, employees' remaining service life with the co...
1 answers
Maddow Manufacturing is a small textile manufacturer using machine-hours as the single indirect-cost rate to allocate...
Maddow Manufacturing is a small textile manufacturer using machine-hours as the single indirect-cost rate to allocate manufacturing overhead costs to the various jobs contracted during the year. The following estimates are provided for the coming year for the company and for the Patterson High Schoo...
1 answers
The primary immune response O occurs when memory cells are stimulated O has a lag period...
The primary immune response O occurs when memory cells are stimulated O has a lag period while B cells proliferate and differentiate into plasma cells O occurs more rapidly and is stronger than the secondary response O is another name for immunological memory...
1 answers
MTBE is known to ungergo photochemical transformations in the atmosphere (gas phase) resulting in the formation...
MTBE is known to ungergo photochemical transformations in the atmosphere (gas phase) resulting in the formation of tert-butyl formate (TBF). How will the folloing physical/chemical properties of pure MTBE compare with those of pure TBF? Fill in the black for each property (<,>,~) and concisely...