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Design Optimization of a VX Gasket Structure for a Subsea Connector Based on the Kriging Surrogate Model-NSGA-II Algorithm Considering the Load Randomness
- Source :
- Algorithms, Vol 12, Iss 2, p 42 (2019), Algorithms, Volume 12, Issue 2
- Publication Year :
- 2019
- Publisher :
- MDPI AG, 2019.
-
Abstract
- The VX gasket is an important part of the wellhead connector for a subsea Christmas tree. Optimization of the gasket&rsquo<br />s structure can improve the connector&rsquo<br />s sealing performance. In this paper, we develop an optimization approach for the VX gasket structure, taking into consideration working load randomness, based on the Kriging surrogate model-NSGA-II algorithm. To guarantee the simulation accuracy, a random finite element (R-FE) model of the connector&rsquo<br />s sealing structure was constructed to calculate the gasket&rsquo<br />s sealing performance under random working load conditions. The working load&rsquo<br />s randomness was simulated using the Gaussian distribution function. To improve the calculation efficiency of the sealing performance for individuals within the initial populations, Kriging surrogate models were constructed. These models accelerated the optimization speed, where the training sample was obtained using an experimental method design and the constructed R-FE model. The effectiveness of the presented approach was verified in the context of a subsea Christmas tree wellhead connector, which matched the 20'' casing head. The results indicated that the proposed method is effective for VX gasket structure optimization in subsea connectors, and that efficiency was significantly enhanced compared to the traditional FE method.
- Subjects :
- 0209 industrial biotechnology
lcsh:T55.4-60.8
Computer science
Context (language use)
02 engineering and technology
lcsh:QA75.5-76.95
Theoretical Computer Science
020901 industrial engineering & automation
0203 mechanical engineering
Kriging
lcsh:Industrial engineering. Management engineering
Randomness
Numerical Analysis
Gasket
wellhead connector
Finite element method
Computational Mathematics
random load
020303 mechanical engineering & transports
Computational Theory and Mathematics
sealing performance
Wellhead
VX gasket
lcsh:Electronic computers. Computer science
Casing
Algorithm
Subsea
Subjects
Details
- ISSN :
- 19994893
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Algorithms
- Accession number :
- edsair.doi.dedup.....b1dceefb9efe0f76a861f6f9c620577a