DNV Strengthens Offshore Wind Capabilities By Bringing ShellDesign Into Sesam

DNV and marine technology consultancy Dr.techn. Olav Olsen have entered a partnership that brings ShellDesign software for design and post-processing of reinforced concrete shell structures into DNV’s Sesam portfolio.

DNV will resell Dr.techn. Olav Olsen’s ShellDesign software, which is used for analysis, design, and code-check of reinforced concrete shell structures. ShellDesign’s advanced features offer many advantages, such as reducing material quantities used in the design, improving constructability and increasing the efficiency of detail design and engineering, all of which enable cost reduction.

Key tool for offshore wind

ShellDesign is integrated for easy use and visualization of results with DNV GL’s Sesam software. The software package can be used for all types of concrete shell structures, with a key area of growth being the offshore wind sector.

Tripod OO Star Wind Floater Illustration by Dr.techn. Olav Olsen AS
Image Credits: dnv.com

“DNV’s engineers have extensive experience using ShellDesign software for many years,” says Elling Rishoff, Head of Software Ecosystems at DNV – Digital Solutions. “We are excited about this partnership, which supports our focus on and growth in the renewables market. We’re going to make the energy transition faster by working together,” says Rishoff.

Conceptual development of OO-Star Wind Floater

ShellDesign has a history going back to the 1980s for use of the conventional design method for concrete structures. ShellDesign pioneered with the development of the consistent stiffness method (CSM) in 2006, a practical and efficient method for non-linear structural analysis of reinforced concrete structures. Recently, the software has been used by Dr.techn. Olav Olsen for detailed conceptual development of the OO-Star Wind Floater, using the ShellDesign and Sesam package. Sesam software provides the structural analysis results, while ShellDesign is used for post-processing and design against well-known concrete standards. The results from ShellDesign can be viewed and used within Sesam.

OO Star Wind Floater
Image Credits: dnv.com

“We are proud and happy to be able to offer our ShellDesign software as part of the Sesam system and thereby reach new users,” says Olav Weider, Managing Director at Dr.techn. Olav Olsen. “ShellDesign is a powerful and efficient tool for high-quality and safe design and documentation of large concrete structures, especially in the marine environment. It has already been extensively used in a broad range of projects on land and at sea, and our aim is that the cooperation with DNV GL will expand the user base and contribute to safer and more efficient structures around the world,” he says.

About ShellDesign software

ShellDesign is a design tool and post-processor for reinforced concrete shell structures subjected to stresses in and out of plane. ShellDesign is owned and developed by Dr.techn. Olav Olsen AS and sold and supported by DNV. The software is based on extensive development and project experience accumulated through many years and is an extension of the design tool CONCODE. ShellDesign has been used on numerous projects and has shown to be applicable for small and large concrete structures, both offshore and inshore.

About Sesam software

Sesam is DNV’s software for design and analysis of offshore and maritime structures made of beams, plates, and solids, integrating stability, loading, strength assessment and CAD exchange. Building on 50 years of experience as a leading tool for engineering of offshore structures, Sesam software is applicable for the entire lifecycle of fixed and floating structures from design, structural re-analysis, modifications and repair, and input to the operational phase, emergency response and decommissioning.

Reference: dnv.com

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