NONLINEAR MECHANICS
NONLINEAR MECHANICS
(mechanics of flexible elements )
Underwater technologies
In underwater works which are connected with lowering or lifting of various objects or constructions, their operation, flexible elements (pipelines, flexible hoses, cables, etc.) are always applied. Calculation of their is intense-deformed condition, stability and above-critical behaviour when loadings of sea character (current, excitement, resistance of a ground, etc. operate) Demands special approaches which are connected with application of modern methods of analytical geometry and the computing analysis. Our experts have created techniques which allow to carry out scientific maintenance of following technologies:
- lifting of flexible extended objects which are fixed in an underwater ground and change the geometry at realisation of technological process. Thus except loadings of sea character it is considered as well resistance of a ground which constantly changes;
- laying and exploitation of pipelines at their modular or local deformation when internal and external non-uniform pressure operates;
- deformation of section of the pipeline if its geometry (ovality of the section, the weakened section because of corrosion, damages or other reasons is broken).
The Decision of nonlinear problems can be received: at any static (load-bearing or deformation), quasistatic or dynamic influences; At action of the nonconservative forces arising because of interaction with external or internal streams of a liquid or gas, etc.; at action of non-uniform centrifugal forces of inertia and forces of a viscous friction which arise at movement in tubular systems of a liquid, which boils. The target data which turn out in a mode of real time on-board computers, allow modify technological process depending on a situation.
- lifting of flexible extended objects which are fixed in an underwater ground and change the geometry at realisation of technological process. Thus except loadings of sea character it is considered as well resistance of a ground which constantly changes;
- laying and exploitation of pipelines at their modular or local deformation when internal and external non-uniform pressure operates;
- deformation of section of the pipeline if its geometry (ovality of the section, the weakened section because of corrosion, damages or other reasons is broken).
The Decision of nonlinear problems can be received: at any static (load-bearing or deformation), quasistatic or dynamic influences; At action of the nonconservative forces arising because of interaction with external or internal streams of a liquid or gas, etc.; at action of non-uniform centrifugal forces of inertia and forces of a viscous friction which arise at movement in tubular systems of a liquid, which boils. The target data which turn out in a mode of real time on-board computers, allow modify technological process depending on a situation.
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