Ocean Installation Simulation with Reusable Equipment Motion Models
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Solution Overview
Problem
Existing ocean engineering equipment installation operation modeling and simulation technologies face low simulation efficiency, inability to meet real-time requirements, and high time costs due to complex calculations and difficulty in reusing simulation models.
Innovation Solution
A joint modeling and simulation method and system that involves acquiring equipment-independent motion simulation models, using an iteration process with specific step sizes for time advancement, and performing load and motion simulations to generate real-time data, while classifying equipment into main and auxiliary bodies and applying methods like Runge-Kutta integration and D-H parameter methods for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If integrated solution and analysis are performed on multi-body system combination equations through extensive derivations, then the simulation accuracy is improved, but the computation amount increases hugely and calculation processes become complicated, leading to low simulation efficiency
Solution Approach 1:
The patent divides the multi-body system into independent equipment units, each with its own motion simulation model. Instead of deriving combination equations for the entire system, the patent segments the simulation into individual equipment simulations that can be executed independently and then integrated through data exchange, dramatically reducing computational complexity while maintaining accuracy.
Solution Approach 2:
The patent introduces an equipment independent motion simulation model as an intermediary layer between the physical equipment and the overall system simulation. This intermediary model allows each piece of equipment to be simulated independently with high accuracy, while the results are then combined through a coordinated simulation framework, avoiding the need for complex direct integration of all equipment equations.
2Reliability
If existing modeling and simulation technologies are used for ocean engineering equipment installation operation, then the simulation model can be established, but the time cost for repeated development is high and the model is not highly operable for reuse
Solution Approach 1:
The patent creates equipment independent motion simulation models that are universally applicable across different ocean engineering equipment types. These models are designed with standardized interfaces and parameters that allow them to be reused for various equipment (cranes, vessels, platforms, etc.) without requiring complete redevelopment, significantly reducing time costs for repeated simulations while maintaining reliability.
Solution Approach 2:
The patent performs preliminary actions by establishing standardized equipment independent motion simulation models before actual installation operations. These pre-developed models with standardized parameters and interfaces can be directly applied to different simulation scenarios, eliminating the need for repeated model development and reducing preparation time while ensuring consistent simulation quality.
3Productivity
If equipment independent motion simulation models are used with iteration manner and specific step sizes for time advancement, then the simulation efficiency is improved and real-time requirements are met, but the calculation process becomes more structured with multiple steps
Solution Approach 1:
The patent implements dynamic time stepping with simulation step size dtSC and solution step size dtIC where dtSC ≥ dtIC. The system dynamically adjusts the number of iteration steps n based on the ratio between simulation and solution step sizes, allowing the calculation process to adapt to different simulation requirements while maintaining efficiency. This dynamic approach balances computational complexity with simulation speed.
Solution Approach 2:
The patent employs periodic iteration cycles where each simulation step dtSC contains multiple solution steps dtIC. This periodic structure with n iteration steps allows the system to systematically process calculations in manageable cycles, improving efficiency through structured repetition while keeping the overall process organized and controllable despite the multiple steps involved.
Data Source
AI summary
Disclosed is a joint modeling and simulation method and system for ocean engineering installation operation, belongs to the technical field of ship and ocean engineering, and particularly relates to joint modeling and simulation for ocean engineering installation operation. The problems of low simulation efficiency, incapability of satisfying real-time requirements of engineering drills, and high time cost caused by repeated development due to difficulty in reuse of a simulation model in the ocean engineering equipment installation operation at present are solved. The method includes the following steps: step S1: acquiring an equipment independent motion simulation model; and step S2: acquiring joint simulation real-time data through motion transmission simulation and load transmission simulation. The joint modeling and simulation method and system for ocean engineering installation operation are applicable to the joint modeling and simulation for ocean engineering installation operation.