Deep-Sea Shell Collision Testing Apparatus
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Solution Overview
Problem
Current deep-sea underwater vehicle designs face structural buckling and instability due to compressive stress when colliding with the seabed, as existing testing methods only simulate static high-pressure environments and not dynamic collisions.
Innovation Solution
A testing apparatus that simulates a deep-sea high-pressure environment using a centrifuge and high-pressure water pump, allowing a titanium alloy shell structure to collide directionally with soil, capturing the shell's trajectory and strain changes using sensors and a high-speed camera, while adjusting the collision position and soil type to evaluate structural safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a centrifuge and high-pressure water pump are used to simulate deep-sea environment, then the simulation accuracy of deep-sea high-pressure environment is improved, but the device complexity increases
Solution Approach 1:
The patent combines a centrifuge system and a high-pressure water pump system into a single testing apparatus. The centrifuge generates centrifugal force to simulate deep-sea pressure, while the high-pressure water pump injects water to create a high-pressure environment. These two systems work together to simultaneously simulate both the pressure and hydrostatic conditions of deep-sea environments, achieving accurate simulation without requiring separate testing facilities.
Solution Approach 2:
The testing apparatus is designed to perform multiple functions: it can simulate deep-sea pressure through centrifugal force, create high-pressure water environments through the water pump, launch the shell structure through a catapult mechanism, and measure collision parameters through sensors. This multi-functional design allows a single device to replace multiple separate testing systems, reducing overall complexity while maintaining simulation accuracy.
2Adaptability or versatility
If a launching device with universal rotating shaft is used to control collision position, then the adaptability of collision direction is improved, but the device complexity increases
Solution Approach 1:
The launching device incorporates a universal rotating shaft that can dynamically adjust its orientation to different angles. This allows the shell structure to be launched in various directions (front, rear, left, right, or any intermediate direction) by simply changing the rotation angle of the shaft. The dynamic adjustability provides versatile collision direction control without requiring multiple fixed launching mechanisms for each direction.
3Measurement precision
If strain and acceleration sensors are used to collect collision data, then the measurement precision of collision parameters is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical measurement systems with electronic sensors. Strain gauges are attached to the shell structure to electronically measure strain during collision, while acceleration sensors measure the acceleration of the shell structure. These electronic sensors provide high-precision measurements and automatically transmit data to a computer for analysis, eliminating the need for complex mechanical measurement apparatus and simplifying the overall system while improving measurement accuracy.
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
Accurately simulates deep-sea dynamic collisions, enabling the evaluation of shell structure safety and seabed stiffness, allowing for detailed analysis of collision scenarios under various conditions, thus improving the design resilience of deep-sea vehicles.
Implementation Method 1
The present disclosure is installed in a geotechnical centrifuge for experiment, a super-gravity environment is provided to meet requirements of simulation of a deep-sea environment
Implementation Method 2
a deep-sea high-pressure environment is creased through a high-pressure water pump device by superposition
Implementation Method 3
The catapult is fixed in the fixing groove for the launching device, the launching device can eject the shell structure through the catapult
Data Source
AI summary
The present disclosure discloses a testing apparatus for directional simulation of dynamic collision between a deep-sea shell structure and seabed, including: a launching device, a high-pressure water pump device, a high-speed camera, a sensor system, a data collection and control system, etc. This device is installed in a geotechnical centrifuge for experiment, a super-gravity environment is provided to meet requirements of simulation of a deep-sea environment, and a deep-sea high-pressure environment is created through a high-pressure water pump device by superposition. A direction of the launching device is adjusted through a universal rotating shaft to control the shell structure to be launched from a specified direction to collide with soil at a predetermined position. A high-speed camera is used to capture an entire experiment process, and strain and acceleration sensors are used to collect experiment data.