VIAS to Present at OMAE 2019 Conference on June 9 – 14, 2019
VIAS will be attending the 38th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2019) in Glasgow, Scotland from June 9-14, 2019.
OMAE 2019 is a forum for researchers, engineers, managers, technicians and students from the scientific and industrial communities from around the world to:
- meet and present advances in technology and its scientific support
- exchange ideas and experiences while promoting technological progress and its application in industry, and
- promote international cooperation in ocean, offshore and arctic engineering
Dr. Arindam Chakraborty, VP of Advanced Engineering at VIAS, will be presenting “FEA Based Simplified Integrated Analysis for Mudmat Design" at the conference on June 11th.
The objective of this study is to explore the opportunity to improve the design and sizing of mudmat for subsea structures, such as Pipeline End Termination (PLET). This is done by comparing the traditional approach following the limit equilibrium methods in API RP 2GEO with a more rigorous simplified integrated analysis approach that involves a single finite element analysis (FEA) model that includes both the pipeline and jumpers together along with the soil-mudmat interaction modeled as non-linear springs, and to quantify any conservatism inherent in the traditional approach. A mudmat design with aspect ratio of 1:2 was considered for detailed analysis. Initially, jumper and pipeline loads were determined by imposing artificial boundary conditions at the hubs and end terminals. Using analytical methods and considering a total dead (submerged) weight of the mudmat and superstructure, a mudmat size was determined per the American Petroleum Institute (API) approach. Factor of Safety (FOS) for bearing and sliding loads were also determined. Thereon, using this mudmat size, the FOS for bearing and sliding were determined using the simplified integrated approach with non-linear springs representing soil-mudmat interactions. The FOS values using the simplified approach were observed to be higher than those obtained using the traditional approach. This provides an opportunity for a “leaner” design, especially as new high pressure, high temperature (HPHT) fields are made feasible where the mudmat size, if designed with conservatism in API RP 2GEO, may be impractically large for installation.
Meet Our Authors:
Dr. Srikanth Srigiriraju
Director of Software Technical Services at VIAS
Dr. Srikanth Srigiriraju is the Director of Software Technical Services at VIAS withover ten years of Abaqus experience in customer support and consultancy for a range of diverse industries. He graduated from Brown University with a Doctorate in Solid Mechanics and Masters in Applied Mathematics. He has expertise in various structural and thermal procedures of Abaqus and its features with specific focus on: connectors, Abaqus-Dymola co-simulation, co-simulation between different Abaqus products, Discrete Elements Methods, contact & constraints.
Dr. Arindam Chakraborty
Co-Author and Presenter
VP of Advanced Engineering at VIAS
Dr. Chakraborty has a Ph.D. in Mechanical Engineering from the University of Iowa, and has over 10 years of experience in solid mechanics and design, non-linear FEA, fatigue and fracture mechanics, reliability analysis, composite structures in Oil & Gas, Nuclear and Structural Design. His Areas of expertise lies in Solid Mechanics & Design, ASME Code (Sections II, III, VIII) Based Strength and Fatigue Analysis, Fitness-for-Service (FFS) Assessment (API 579), System Reliability, Component Reliability and Optimization, Probabilistic Analysis. He has managed many FFS projects, provides training in FFS, Fatigue and Fracture Mechanics, FEA, Probabilistic Analysis. Dr. Chakraborty is engaged with Pressure Vessels and Piping conference committees, chairs conference sessions, involved with ASME & API code committees and has extensive journal & conference publications.
Dr. Burak Ozturk
President at VIAS
Dr. Ozturk is a mechanical engineer with over 10 years of experience in the Oil and Gas industry. He has a strong theoretical background in thermal-fluid sciences, structural design, and analysis, mechanical components and design, and FEA. Founded VIAS in September 2015 to place the company at the cutting edge of industry technology and innovation through identifying directions, collaboration and facilitating, and managing internal/external R&D projects. He is also an Adjunct Associate Professor at the University of Houston, and lectures on a course in “Pipeline Design” in the Mechanical Engineering Department. He also teaches in the College of Technology, where he is a member of the Industry Advisory Board (IAB). He holds over twenty five conference and journal publications, and is an expert in his field.
VIAS is a Dassault Systèmes Platinum Partner providing engineering software solutions, engineering consultancy and product lifecycle management services that enable companies to maximize their productivity, decrease operating costs and time to market. Kindly contact us if you would like to schedule a one-on-one session with our team.