NEi Software Nastran Finite Element Analysis

Nastran Finite Element Analysis and Simulation Software

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Meshed MAESTRO model fully formatted for export to NEi Nastran

Meshed MAESTRO model fully formatted for export to NEi Nastran

Customer Feedback

"We have been using NEi  Nastran and feel it is an extremely good product. We have used a number of other products in the past, ranging from GTSrudl to Cosmos. Our main CAD tool is SolidWorks and combined with Femap, NEi Nastran is far and away the most comprehensive, and usable system we have used..."

Christopher Dubea
Director of Offshore Technology
Neptune Sciences

NEi Nastran provides a wide range of industry proven solutions for marine applications that enable our customers to evaluate and optimize many performance and reliability aspects of their designs and manufacturing processes. Benefits include: shorter development cycles, reduced development costs, managed and reduced risk, improved quality and innovation.

NEi Nastran maritime customers routinely address issues related to:

  • U.S. Naval VesselFull vessel modeling, structure, engines, and controls
  • Structural and dynamic design and analysis of composite structures including honeycomb panels, complex laminations and 3D micro models of joints and failure zones
  • Thermo-mechanical simulation of engines under different operating conditions.
  • Simulating the effects of underwater explosions on ships and submarines (DDAM and USA support).
  • Structural analysis of submarine frames to predict buckling modes
  • Fatigue analysis survey and life prediction of complete vessels
  • Linear and nonlinear static and dynamic analysis of entire vessels, sub-assemblies, or individual components
  • Attenuation of noise generated by underwater vehicles

NEi Nastran product suite key benefits for marine applications:

  • Comprehensive interactive tools necessary for model creation, analysis monitoring, and results evaluation including a state-of-the-art analysis editor
  • Specialized industry-proven element technologies including hybrid quad and hex elements and dissimilar mesh interpolation elements
  • Specialized solution sequences including Design Dynamic Analysis Method (DDAM), integration with Anteon's Underwater Shock Analysis (USA) program, and compatibility with MAESTRO from Proteus Engineering
  • High performance processing including advanced parallel PCG iterative, sparse direct, and block Lanczos solvers which allow solutions to large-scale models over 10 million degrees of freedom on inexpensive 32-bit Windows workstations as well as high end 64-bit Linux clusters
  • Special modal filtering and database restart tools for performing DDAM and dynamic response solutions increase productivity by allowing a modal database to be altered and reused with rerunning an eigenvalue extraction analysis
  • Robust contact capability using a 3D surface contact method which easily handles dissimilar meshes between components including frictional effects
  • Basic through advanced material models including temperature dependent materials, non-linear elasticity and plasticity effects, creep, and thermo-elasticity
  • Substructuring and Modal Reduction allows the creation and reuse of substructures to improve the efficiency of large analyses and provides a convenient method to transfer model data to subcontractors
  • Submodeling allows in-depth evaluation of particular regions
  • Load and Boundary Condition Interpolation allows mapping of thermal and CFD output from specialized heat transfer and fluid dynamic models to the structural model for load and boundary condition definition
  • Inertia relief capability allows the quasi-static simulation of forces acting on an unconstrained structure such as aircraft in flight or a submerged submarine
  • Multiple sub case capability provides a highly efficient technique to evaluate the response of structures to many different load cases and boundary conditions
  • Extensive composite material support including, 2D orthotropic, 3D orthotropic, general anisotropic, laminate lay-up definitions, and a wide range of failure criteria
  • Advanced solution sequences such as linear and nonlinear static, transient dynamic, steady state dynamic, frequency extraction, heat transfer, and other analysis types, provide a choice of appropriate analysis types for different types of simulations
  • Integration with specialized fatigue applications, such as winLIFE which is available as an add-on to the NEi Nastran product suite and also fe-safe, nCode, Falancs and FE-Fatigue

Media Coverage in the Maritime and Shipbuilding Industry

Military & Aerospace Electronics November 2009

Training for the War on Terror
Military personnel throughout the ranks hone their skills with advanced training and simulation systems.
By Courtney E. Howard
Military & Aerospace Electronics

finite element analysis Around-the-World Ocean Racing

Around-the-World Ocean Racing
Entertainment Engineering



Customers in the Maritime and Shipbuilding Industry

PDFAmerica's Cup Sailboat Design
PDFCargo Ship Model Analysis


Conference Papers


Product Demonstration Options and Information

Phone (U.S.): (877) - Nastran
Phone (International): +1 (714) 899-1220
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