Abstract
Supervising and health monitoring of structures can assess the actual state of existing structures after initial loading or in the state of operation. Structural life management requires the integration of design and analysis, materials behavior and structural testing, as given for several examples. Procedure of survey of structural elements and criteria for their selection must be strongly defined as it is for the offshore gas platforms. Numerical analysis of dynamic loading is shown for the Aeolian vibrations of overhead transmission line conductors. Since the damper’s efficiency strongly depends on its position, the procedure of determining the optimum position of the damper is described. The optical method of caustics is established in isotropic materials for determination of the stress intensity factors (SIFs) of the cracks in deformed structures and is advantageously improved for the application to fiberreinforced composites. A procedure for simulation of crack propagation for multiple cracks was introduced and SIFs have been calculated by using finite element method. Crack growth of a single crack or a periodical array of cracks initiated at the stiffeners in a stiffened panel has been investigated.
Highlights
The accumulation of fatigue damage over time is a principal degradation mechanism, which usually leads to crack initiation in critical structural components
Damaging process analysis is significant for determination of reliability of mechanical components while the numerical simulations of crack appearances and growing will process phenomena of structural damages
Control of structural elements must be done periodically by the survey rules defined for specific structure [1]
Summary
The accumulation of fatigue damage over time is a principal degradation mechanism, which usually leads to crack initiation in critical structural components. The growth of these cracks can lead to the collapse of structure. Damaging process analysis is significant for determination of reliability of mechanical components while the numerical simulations of crack appearances and growing will process phenomena of structural damages
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