Abstract
Composite materials are used in many marine structures such as renewable marine energy conversion systems because of their fairly good mechanical properties and especially their low densities compared to traditional materials. The most advanced features currently available in finite element (FE) Abaqus/Explicit have been employed to simulate the behavior of the composite nozzle under hydrodynamic and impact loading. A hydrodynamic analysis was considered to design the nozzle turbine and the hydrodynamic pressure obtained was then implemented as boundary conditions to a FE code. The goal of this article is to evaluate the durability of composite materials of a ducted tidal turbine under critical loads (hydrodynamic and hydrostatic pressures) with the implementation of a failure criterion using the finite element analysis (FEA). The mechanical behavior was analyzed for two materials (Carbon–epoxy/ Glass–polyester). This has been accomplished by forming a user-created routine (VUMAT) and executing it in the ABAQUS software.
Highlights
Growing concern over the threat of global climate change has led to an increased interest in research and development of renewable energy technologies
We present the results of the finite element (FE) simulation by analyzing the dynamic response of the nozzle subjected to impact tests more the hydrodynamic pressure calculated during the rotor design and the hydrostatic pressure related to the depth of the site and to the circulation of the fluid at a speed of 3 m/s
We have interested in this part to the validation of the created model, validation of the VUMAT subroutine and the behavior laws of the ply implemented in the VUMAT for different velocities of impact
Summary
Growing concern over the threat of global climate change has led to an increased interest in research and development of renewable energy technologies. Marine renewable energies can contribute to the diversification of the global energy mix because they have the advantage of providing a modular production (Mourad et al, 2018). In this context, composite materials will play a key role in this emerging industry because they have specific mechanical properties that are very remarkable in terms of reliability and durability (Smith, 1990). The major disadvantage of using these materials is the mastery of the evolution of its mechanical properties due to the complexity of mechanisms of mechanical and environmental damage (temperature, pressure, humidity, etc.) which can create irreversible degradation preventing the performance specifications from being met (Davies and Lemoine, 1992). It is essential to control the evolution of the properties of the material during its operation, in order to predict the lifetime of the composites
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