Optimal design of dual derricks

The structure of dual derrick for offshore platform is optimized in this study. The special arrangement is establishing a mathematical model to minimize the stress and mass of dual derrick. The beam is divided into vertical, horizontal and oblique beam. The beam’s section sizes are design variables. After calculating test point data by ANSYS under operating conditions, the multi-objective optimization method is adopted to solve the optimal section size based on the regression equation of RSM fitting influence factors and response variables. This study will check the safety of the optimized dual derrick under storm self-storage conditions. The result shows that dual derrick meets safety requirements under extreme conditions, the optimized structure’s mass reduced about 21.2%, and the maximum safety factor increased about 8.3%.

show abstract

Research on Optimization Design of Dual Derrick for Offshore Platform Based on RSM

Jiang

Zhang

Yang

et al. 2020

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

Research on Optimal Design of Dual Derrick for the 7th Generation Ultra-Deepwater Offshore Platform

Jiang

Zhang

Yang

et al. 2020

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

To solve the problem of small safety factor and heavy structure of dual derrick of the 7th generation ultra-deepwater offshore platform, the optimal design of the dual derrick is studied. Using ANSYS software, the mechanical property of dual derrick under the storm self-storage condition is analyzed. Taking the mass and safety factor of the dual derrick as the target and the beam section parameters as the design variable, after the single factor optimization, the response surface method is used to establish the comprehensive optimization mathematical model of the section parameters. The optimal combination of the section parameters is obtained. The results show that the safety factor of the original design of the dual derrick in the storm self-storage condition is less than 1.67 as required by API Spec 4F, and the bottom leg of the derrick is the most dangerous. Compared with the original scheme, the final optimization scheme of dual derrick reduces the mass by 19.11% and increases the safety factor by 23.81%, which meets the requirements of operating conditions.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Optimal design of dual derricks

Cited by 2 publications

References 6 publications

Research on Optimization Design of Dual Derrick for Offshore Platform Based on RSM

Research on Optimization Design of Dual Derrick for Offshore Platform Based on RSM

Research on Optimal Design of Dual Derrick for the 7th Generation Ultra-Deepwater Offshore Platform

Contact Info

Product

Resources

About