Shock impact simulation model along with the harmonic effect of the working device

Area of Science:

• Naval Engineering
• Mechanical Engineering
• Computational Fluid Dynamics

Background:

• Underwater detonations and operational harmonic loads present complex challenges for ship-installed devices.
• Accurate simulation of these loads is crucial for ensuring structural integrity and operational safety.
• Previous studies may not have fully explored the sensitivity of simulations to initial conditions.

Purpose of the Study:

• To investigate the influence of varying initial conditions on numerical simulations of fan loads.
• To analyze the combined effects of underwater detonation and harmonic loads.
• To assess the impact of initial conditions on displacement and velocity predictions.

Main Methods:

• Numerical simulations were employed to model the fan load scenarios.
• The study incorporated both underwater detonation and typical harmonic loads.
• Initial conditions were systematically varied to observe their effects.

Main Results:

• Different initial conditions demonstrably affect both displacement and velocity outcomes in the simulations.
• Significant discrepancies were observed when comparing results with and without harmonic loads.
• The sensitivity to initial conditions was pronounced in the simulated scenarios.

Conclusions:

• Initial conditions are a critical factor in the accuracy of numerical simulations for ship-installed devices.
• Further in-depth analysis at the initial modeling stage is essential for predicting impact resistance.
• These findings underscore the importance of rigorous validation of simulation parameters.