Ship Damage Stability Testing With Active Valve-Matrix Control
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Solution Overview
Problem
Existing ship damage stability testing methods lack accuracy and efficiency, particularly in simulating various impact scenarios and maintaining consistency with actual shock aperture conditions.
Innovation Solution
An active control system for ship rupture stability testing, featuring a ship hull with impact zones, through-holes equipped with valves and water level detection, connected to a control device and negative pressure device, allowing precise simulation of impact shapes and water flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional ship damage stability testing methods are used, then the testing process is simpler, but the test accuracy and consistency with actual shock aperture conditions deteriorates
Solution Approach 1:
The hull is divided into multiple impact zones with through-holes distributed across different areas (port side, bow, stern, top, bottom). Each through-hole can be independently controlled by valves to simulate different impact scenarios, enabling precise reconstruction of actual damage patterns while maintaining manageable system complexity through modular zoning
Solution Approach 2:
The system employs dynamically controllable valves (solenoid valves) that can be remotely controlled to open or close individual through-holes based on the simulated impact scenario. The negative pressure device dynamically adjusts to maintain water flow consistency. This dynamic control capability allows the system to adapt to various test requirements while maintaining high measurement precision through active adjustment rather than fixed configuration
2Adaptability or versatility
If multiple impact scenarios are simulated using traditional methods, then more test equipment and artificial waves are required, but the cost and energy consumption increase
Solution Approach 1:
A single hull model with multiple controllable through-holes serves multiple functions by simulating various impact scenarios (single impact, multiple impacts, different locations, different shapes) that would traditionally require multiple specialized test setups. The negative pressure device universally maintains water flow consistency across all scenarios. This multi-functionality reduces both equipment requirements and energy consumption compared to traditional methods requiring separate artificial wave generation for each scenario
Solution Approach 2:
The system creates accurate copies of actual impact conditions by controlling valve combinations to reproduce specific damage patterns (e.g., 1×1, 2×2, 3×3 hole patterns). Instead of generating actual waves for each scenario, the system copies the essential hydrodynamic characteristics through controlled water inlet flow, significantly reducing energy requirements while maintaining test validity
3Measurement precision
If the water inlet flow of simulated impact port area differs from actual impact port, then the test model becomes simpler, but the test accuracy deteriorates with error greater than 1%
Solution Approach 1:
The negative pressure device continuously monitors and adjusts the water inlet flow to maintain consistency with actual impact port conditions. By creating a negative pressure environment, the system actively compensates for flow variations and ensures that the simulated water inlet flow matches the target flow within 1% accuracy. This feedback control mechanism achieves high measurement precision through continuous adjustment rather than passive flow matching
Solution Approach 2:
The system controls the water inlet flow by adjusting the negative pressure parameter generated by the negative pressure device. By changing the pressure parameter dynamically, the system maintains optimal water flow conditions for different impact scenarios. This parameter-based control approach enables precise flow management without requiring complex mechanical flow restriction devices
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances test accuracy by reducing error to less than 1% and simulates multiple impact scenarios efficiently, saving costs and energy compared to traditional methods.
Implementation Method 1
the negative pressure device is used to provide negative pressure to make the water inlet flow of the simulated impact port area consistent with the water inlet flow of the actual impact port required for the test
Data Source
AI summary
In this invention, an active control system for ship rupture stability testing is disclosed, consisting of a hull (1), said hull (1) has a number of through holes (2) uniformly distributed across the impact zone, the through-holes (2) are fitted with valves and sensing devices, and the communication is connected to a control device (3), in addition, the hull cabin (1) is connected to a negative-pressure device (4); the control device (3) controls the opening and closing of the valve matrix combinations of different through holes (2) The control device (3) controls the opening and closing of the valve matrix combinations in the different through holes (2) to simulate the actual impact ports in different shapes and positions on the hull (1); the negative pressure device (4) is used to provide negative pressure to make the inlet water flow of the impact port area of the test model and the inlet water flow of the actual impact port area with an error of less than 1%. In this invention, the simulation of different shock port shapes can be realized by controlling the opening of valve die combinations in different zone shapes; for the negative pressure device, it is realized that the valve array combinations converge with the flow rate of the actual vessel's breach port, improving the accuracy of the test.