PRESSURE, STRESS, STRAIN AND LOANGDING FORM USED IN THE CALCULATION OF CHEMICAL EQUIPMENT

PRESSURE VESSEL• Vessel, tanks, and pipelines that carry, store or receive fluids are called pressure vessels.. • Pressure vessels are usually spherical or cylindrical... Pgauge≤ 2.5 N/

PRESSURE, STRESS, STRAIN AND

LOANGDING FORM USED IN THE

CALCULATION OF CHEMICAL

EQUIPMENT

Võ Thị Cẩm Tú 61304676 Trương Thị Hân 61301113 Trần Thị Kim Huyền 61301562

GROUP 8

CALCULATION CALCULATION

DEFINITION DEFINITION

CONTENT

A.

B.

1 PRESSURE VESSEL

• Vessel, tanks, and pipelines that carry, store or

receive fluids are called pressure vessels

• Pressure vessels are usually spherical or

cylindrical

A DEFINITION

Pgauge≤ 2.5 N/mm 2

 The cylindrical vessels are generally preferred

SSph < SCyl

Pgauge ≤10 N/mm 2

Cylindrical pressure vessels Spherical pressure vessel

Thickness:

• Pressure vessels are used in a number of industries.

• For example, the power generation industry for fossil

and nuclear power

Industrial applications

• Maximum Allowable Working Pressure (MAWP):

the maximum permissible pressure at the top of the vessel

in its normal operating position at a specific temperature, usually the design temperature.

P ≤ [P]

• Maximum Allowable Pressure (MAP): The term MAP

is often used It refers to the maximum permissible pressure based on the weakest part in the new and cold condition, and all other loadings are not taken into consideration.

2 STRESS & STRAIN

• The combined stresses due to a combination of loads acting simultaneously are called stress categories

Define a direction of stress or relate to the

application of the load

1 Tensile

2 Compressive

3 Shear

4 Bending

5 Bearing

6 Axial

7 Discontinuity

8 Membrane

9 Principal

10 Thermal

11 Tangential

12 Load induced

13 Strain induced

14 Circumferential

15 Longitudinal

16 Radial

17 Normal

Types of Stress

1 Primary stress

a General:

o Primary general membrane stress

o Primary general bending stress

b Primary local stress

2 Secondary stress

a Secondary membrane stress

b Secondary bending stress

3 Peak stress, F

Classified of Stress

STRAIN

• Loadings or forces are the "causes" of

stresses in pressure vessels.

• Type of loading:

o Steady loads

o Non-steady loads

o General loads

o Local loads

3 LOADINGS