| NEi Nastran
customers in the marine industry routinely address issues related
to: |
| • |
Full
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 |
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|
| 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 Model 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. |
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| Customers
in Marine Industry |
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| Conference
Papers |
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| Product
Demonstration Options and Information |
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United States | 
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