Engineering, 27.11.2019 06:31 dailanniiii
Consider a part with the following properties: sut-80 ksi, sy 60 ksi, se 25 ksi (fully corrected this includes all marin factors, whose product is 0.625), and f= 0.9. the expected loads for this part are an alternating von mises stress, σ., of 30 ksi, and a mean von mises stress, c' of 20 ksi. proportional overload is expected. a) draw the modified goodman failure envelope for this part below, labeling the failure lines and the load point. 80t 70 2 60 20 10 0 10 20 30 40 50 60 70 80 mean stress (ksi) b) the part will have finite infinite life because the load point is inside / outside the failure envelope. c) the equivalent alternating stress, si, which can be used to estimate the fatigue life is: (find both graphically and numerically - show all work.) d) calculate the constants a and b for the high cycle fatigue equation, s an
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Engineering, 04.07.2019 12:10
On a average work day more than work place firs are reorted
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Engineering, 04.07.2019 18:10
Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise
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Engineering, 04.07.2019 18:10
For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
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Engineering, 04.07.2019 18:10
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
Answers: 2
Consider a part with the following properties: sut-80 ksi, sy 60 ksi, se 25 ksi (fully corrected th...
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