Beam Theory for Subsea Pipelines: Analysis and Practical by Alexander N. Papusha

By Alexander N. Papusha

Introducing a brand new sensible method in the box of utilized mechanics constructed to unravel beam power and bending difficulties utilizing classical beam concept and beam modeling, this striking new quantity deals the engineer, scientist, or scholar a innovative new method of subsea pipeline layout. Integrating use of the Mathematica application into those versions and designs, the engineer can make the most of this new angle to construct superior, extra effective and not more high priced subsea pipelines, an important section of the world's strength infrastructure.

Significant advances were completed in implementation of the utilized beam conception in numerous engineering layout applied sciences during the last few many years, and the implementation of this idea additionally takes a big position in the sensible region of re-qualification and reassessment for onshore and offshore pipeline engineering. A common technique of using beam thought into the layout method of subsea pipelines has been constructed and already integrated into the ISO instructions for reliability-based restrict kingdom layout of pipelines. This paintings is based on those major advances.

The goal of the publication is to supply the speculation, examine, and useful purposes that may be used for academic reasons through body of workers operating in offshore pipeline integrity and engineering scholars. essential for the veteran engineer and scholar alike, this quantity is a crucial new development within the strength undefined, a powerful hyperlink within the chain of the world's power production.

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Org/ wiki/Euler-Bernoulli beam equation. Loads acted on the beam may be involved into solutions either through boundary conditions or through the function, which represents an external distributed load. Using distributed loading is often favorable for simplicity. Boundary conditions are, however, often used to model loads depending on context; this practice being especially common in vibration analysis. By nature, the distributed load is very often represented in a piecewise manner, since in practice a load is not typically a continuous function.

4). Obviously the same deflection of the profile is obtained. 1 Problem set Let’s consider the traditional method of solution for the indeterminate beam as shown in the picture (Fig. 5). Rectangular load: q (kN/m) — unique load distribution is shown in the picture (Fig. 5). 8) N Mi = 0. 4 Graphics of the moment, shear force and deflection of the beam profile HEA200. 5 Mechanical scheme of the beam with leg. Boundary problem set for every span of the beam d2 y1 = M1 (x); dx2 y1 (0) = 0; y1 (L/2) = 0; Y J0 d2 y2 Y J0 2 = M2 (x); dx y2 (L/2) = 0; y2 (L) = 0.

5 Mechanical scheme of the beam with leg. Boundary problem set for every span of the beam d2 y1 = M1 (x); dx2 y1 (0) = 0; y1 (L/2) = 0; Y J0 d2 y2 Y J0 2 = M2 (x); dx y2 (L/2) = 0; y2 (L) = 0. 10) y1 (L/2) = y2 (L/2). Full system static equations regarding five reactions VA, VB , VS , MA, MB . 11) y1 (0) = 0; y2 (L) = 0; y1 (L/2) = y2 (L/2). 13) the following notice are introduced: Y J0 — stiffness of beam (the same for both spans); d2 y1 dx2 — curvature of elastic line of the first span, for 0 ≤ x ≤ L/2; d2 y2 dx2 — curvature of elastic line of the second span, for L/2 ≤ x ≤ L; M1 (x) — bending moment in x, for 0 ≤ x ≤ L/2; M2 (x) — bending moment in x, for L/2 ≤ x ≤ L.

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