• Strand7

      design process

    Strand7 is a general purpose Finite Element Analysis application used for modelling and analysis of mechanical and structural components. Strand7 has full linear and non-linear capabilities, and solvers for static and dynamic applications.

    NSE uses Strand7 for modelling of complex structures as well as simple mechanical parts. Seismic analyses can be performed using the time history (transient) solvers or by using equivalent static methods such as the use of a spectral response solver.

    One of the hallmarks of Strand7 is that it is especially easy to create models of structures and components with, and can produce results quickly.

  • RFEM

      Geotechnical Investigation

    RFEM is a highly flexible analysis and design package that is capable of linear and non-linear analysis of structures and components. RFEM also has a myriad of add-on design packages that simplify the checking of steel and concrete members to design codes from around the world.

    NSE uses RFEM mainly for code compliance checking of steel and concrete structures. Currently NSE has the add-on modules to check structures for compliance to American codes, South African codes and to Eurocode. NSE has performed work related to the analysis and design of 400 ton crane gantries, industrial platforms, warehouse structures etc.

    RFEM has very good tools for applying loads to structures quickly, auto-generating structures based on parametric input and exporting models to BIM software such as Revit and Tekla. This allows NSE to be able to quickly model structures with complex geometric shapes, add loading and get reliable answers.

  • Abaqus

      Soil content

    Abaqus Finite Element software is globally regarded as one of the most trusted finite element codes available and is one of the few applications accepted by nuclear regulators for the analysis of nuclear safety related structures.

    NSE uses Abaqus for the analysis of problems that are highly complex and Abaqus performs well in the analysis of highly non-linear problems. NSE typically uses Abaqus for problems that involve impact or large deformations - one of the recent projects undertaken in which Abaqus proved essential, was the drop analysis of a large 18 m high x 12 m diameter tank from a height of 10 m. The analysis took account of various drop angles of the tank and full non-linear deformation of the tank at the impact zone.

  • Seismic analysis tools


    Due to the nature of work done by NSE, we make extensive use of various software packages to generate the data needed for accurate and comprehensive seismic analyses.

    SHAKE2000 developed by GeoMotions LLC, (http://www.geomotions.com) is a software application that assists with the analysis of site-specific response and the evaluation of earthquake effects on soil deposits. NSE generally uses SHAKE2000 to generate the ground input motions for a seismic analysis, based on the site specific soil conditions obtained as a result of geotechnical testing.

    THSpec is a very useful software tool for generating response spectra based on a time history acceleration response of a structure. NSE has also developed our own tools to create response spectra based on Strand7 data. The software makes use of the Strand7 API which ensures that data is obtained directly from the analysis model, which eliminates errors and speeds up results.

    NSE has also developed numerous in-house software tools to assist in the design and loading of structures. These tools are extensively Validated and Verified to ensure correctness before use. This not only ensures consistency in results, but also ensures that we understand how and why outputs are generated, which is often crucial to understanding how to address the structural challenges that arise.