Design analysis

Design analysis

James Fisher Nuclear provide software based analysis and support to many high profile and prestigious nuclear, civil and military projects.

Working closely with the various specialist engineering design teams within our group, James Fisher Nuclear's (JFN) innovative, yet highly practical approach to problem solving, coupled with our extremely wide range of in-house skills and experience, places us well to meet the current and future demands of the fast changing markets in which we currently operate.

The range of services currently available within the team comprise the following:

  • Finite element modelling (static/dynamic/thermal)
  • Classical methods
  • Metallics/non-metallics/composites analysis
  • Structural test design and analysis
  • Investigation of mechanical failures or the characterisation of machine performance

The mechanism simulation and analysis package allows mechanisms to be driven to check that there are no geometrical clashes and also allows inputs of pressure, force and speed etc. The outputs can be selected for any part of the mechanism.

In addition to the analysis packages incorporated within the 3D software design packages, JFN also operates the following dedicated analysis packages:

  • Nx Nastran
  • Ansys
  • MathCAD
  • PVElite;
  • CAESAR ii
  • STAAD Pro
  • MatLAB

The analysis process starts at the concept design stage where scoping calculations are produced to demonstrate that the concept is credible and not just a picture drawn on a 3D design package. As the design progresses through scheme and detail design, the scope and intensity of the analysis is progressively increased to a stage where, on the completion of detail design, sufficient analysis exists to enable the production of the technical construction file, used to underpin the CE marking of the manipulator.

In the case of a hydraulic manipulator the key areas of analysis required to underpin the design comprise the following:

  • Overall machine strength and rigidity (static and dynamic);
  • Load path components (machined and procured);
  • Actuators (rotary and linear);
  • Drive mechanisms (mechanical linkages, sprockets, chains, etc.);
  • Hydraulic system (capacity, power, response, damping, feedback, etc.);
  • Routing of services (hydraulics, electrics etc.);
  • Mechanical handling (installation and retrieval);
  • Failure mode response (loss of hydraulic power);
  • Weight assessment.

Hydraulic power systems have, as we know, the potential for system instability if the capacity of the hydraulic system and the position of valves and actuators are not carefully matched. For operations in hostile environments, the preferred position of valves and actuators is in a maintainable location, imposing additional design constraints. JFN has extensive experience of analysing hydraulic systems and is well versed in minimising the potential for system instability.

To find out more about our design analysis capabilities Contact Us today.

Below are some of the other design services JFN can offer: