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The LPG tank with an inner diameter of 470 mm and a wall thickness of 2.7 mm in the figure operates under an internal pressure ranging from zero to 3.7 MPa. Also, an axially variable torsional moment of Tmax=10 kNm and Tmin=3 kNm is applied to the tank. The tank made of hot rolled steel sheet operates at ambient temperature. Accordingly, calculate the fatigue safety of the tank for 50% reliability?

The LPG tank with an inner diameter of 470 mm and a wall thickness of 2.7 mm in the figure operates under an internal pressure ranging from zero to 3.7 MPa. Also, an axially variable torsional moment of Tmax=10 kNm and Tmin=3 kNm is applied to the tank. The tank made of hot rolled steel sheet operates at ambient temperature. Accordingly, calculate the fatigue safety of the tank for 50% reliability?

Elements Of Electromagnetics
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
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The LPG tank with an inner diameter of 470 mm and a wall thickness of 2.7 mm in the figure operates under an internal pressure ranging from zero to 3.7 MPa. Also, an axially variable torsional moment of Tmax=10 kNm and Tmin=3 kNm is applied to the tank. The tank made of hot rolled steel sheet operates at ambient temperature. Accordingly, calculate the fatigue safety of the tank for 50% reliability?  (yield strength =460 Mpa,tensile strength=570 Mpa)

Note=Since there is no notch effect in the cylindrical part of the tank, take all kf as 1. For 50% reliability, take kc = Axial * Torsion = 0.51. Take the size factor kb = 0.85.

Tmak=10 kNm Tmin=3 kNm Pmin= 0 Tmin= 3 kNm Tmak=10 kNm
Transcribed Image Text:Tmak=10 kNm Tmin=3 kNm Pmin= 0 Tmin= 3 kNm Tmak=10 kNm
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