Predictions of the transient loading on box-like objects by arbitrary pressure waves in air

Area of Science:

• Fluid dynamics
• Acoustics
• Structural mechanics

Background:

• Understanding transient loading on structures is critical for safety and design.
• Pressure waves can induce significant, short-duration forces on objects.
• Predicting these forces requires accurate modeling of fluid-structure interaction.

Purpose of the Study:

• To investigate transient loading on rigid, box-like objects subjected to impinging pressure waves.
• To develop and validate an analytical model for predicting transient loading history.
• To create non-dimensional design maps identifying different loading regimes.

Main Methods:

• Utilizing a numerical solver to simulate transient flow and pressure on object surfaces.
• Developing an analytical model for predicting transient loading on object faces.
• Comparing numerical predictions with analytical model results for validation.

Main Results:

• The analytical model demonstrated good agreement with numerical predictions.
• Non-dimensional design maps were constructed using both numerical and analytical models.
• Distinct regimes of transient loading were identified and explored.

Conclusions:

• The developed analytical model is effective for predicting transient loading on box-like objects.
• The non-dimensional design maps provide valuable tools for engineering design under transient pressure wave loading.
• Further exploration of identified loading regimes can inform structural design and safety assessments.