Analytical Troubleshooting of Process Machinery and Pressure by Anthony Sofronas

By Anthony Sofronas

Content material:
Chapter 1 creation (pages 1–3):
Chapter 2 power of fabrics (pages 4–116):
Chapter three Vibration research (pages 117–140):
Chapter four Fluid stream (pages 141–163):
Chapter five warmth move (pages 164–181):
Chapter 6 Compressor platforms and Thermodynamics (pages 182–217):
Chapter 7 information (pages 218–228):
Chapter eight challenge fixing and choice Making (pages 229–241):
Chapter nine fabrics of development (pages 242–258):
Chapter 10 Mechanical method Modeling, with Case Histories (pages 259–324):
Chapter eleven health for provider, with Case Histories (pages 325–343):

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Extra resources for Analytical Troubleshooting of Process Machinery and Pressure Vessels: Including Real-World Case Studies

Sample text

The shaft material was 316 stainless steel. 6) and the question was whether a change in material would help and why the shaft had twisted. 125 in. 55 Shaft speed (rpm) ϭ 200 1. ) τavg ϭ ᎏ ᎏ D3(rpm) lb/in2 2. Alternating shear stress (τalt) is 5% of the mean based on motor power fluctuations. 3. 5Sy. 51 800 1200 1200 4. 7 summarizes the results. It is evident that the original shaft design with the 800-hp motor was adequate. It had operated for 10 years with no twisting of the shaft or cracking in the keyway.

In shells, the thickness is considered small if it is less than 10% of the radius. The stresses are membrane-type stresses, which means that bending stresses are considered negligible. The bending stress shown on the figure is explained later in this section. The S1 and S2 stresses are called by several names, which can be confusing. For example, S1 is known as longitudinal or meridian stress and S2 is known as hoop, circumferential, or tangential stress. In this section S1 is called the longitudinal stress and S2, the hoop stress.

The shaft material was 316 stainless steel. 6) and the question was whether a change in material would help and why the shaft had twisted. 125 in. 55 Shaft speed (rpm) ϭ 200 1. ) τavg ϭ ᎏ ᎏ D3(rpm) lb/in2 2. Alternating shear stress (τalt) is 5% of the mean based on motor power fluctuations. 3. 5Sy. 51 800 1200 1200 4. 7 summarizes the results. It is evident that the original shaft design with the 800-hp motor was adequate. It had operated for 10 years with no twisting of the shaft or cracking in the keyway.

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