Simcenter Nastran

With the „Dynamic Response“ toolbox in Simcenter Nastran you can calculate the forced dynamic frequency response of your product according to your inputs (loads or movement), that change depending on time and frequency. As an add-on Option for the Simcenter Nastran base module it complements the linear-static functions of the base solution. The dynamic response functions play an important role in various industries, for example:

• Assessment of passenger comfort in aircraft and cars under various operating conditions,
• Determining if the motor frequencies or the tire control of the road surface have a negative impact on the performance of other vehicle components (e.g. the steering rod or the seat)
• Assessment of the effect of vibrations on the performance of consumer products and other electronic high-tech devices.

Calculating aeroelasticity enables the simulation of structural models in air current environments. With the Simcenter Nastran Aeroelasticity module, an add-on module for Simcenter Nastran Basics, you have access to static aeroelastic functions for the calculation and construction of stresses, loads, aerodynamics and controls. Aeroelasticity is used when designing airplanes, helicopters, rockets, suspension bridges and even tall building structures.

Rotating bodies are subject to gyroscopic effects from Coriolis and centrifugal forces. The Simcenter Nastran Rotor Dynamics module allows for predicting the dynamic behavior of rotating systems in consideration of those effects. This module enables the user to simulate rotating loads, conduct synchronous and non-synchronous calculations, create Campbell-Diagrams, predict critical frequencies and velocities and isolate potential instabilities.

With Simcenter Nastran you can solve large systems of equations, efficiently using numerous matrix algorithms. The „Superelements“ function of Simcenter Nastran is the key to even greater efficiency. Superelements, an add-on for Simcenter Nastran Basic, plays an important role in the calculation of very big and complex Finite-Element-Models because it splits bigger structures into many equal smaller structures (Superelements). Superelements can be used with all Simcenter Nastran analysis functions. The add-on is especially efficient for extensive analyses of whole systems. This can include analyses of whole aircraft, cars or ships, and it performs calculation steps and partial calculations for whole assemblies.

Simcenter Nastran Advanced Nonlinear allows for a complete and simultaneous incorporation of all three structural nonlinearities: contact-, material- and geometry-nonlinearities. As an add-on for Simcenter Nastran Basic, Simcenter Nastran Advanced Nonlinear is an integration of the well-known and powerful ADINA Finite Element Solver. Whereat Simcenter Nastran SOL 601 is for implicit and Simcenter Nastran SOL 701 is for explicit solutions methods.

Every manufacturer strives for innovative products that fulfill the performance standards. Design engineers can optimize drafts with optimization methods, so they get the best possible product with minimal costs. Manual design iterations are a matter of luck at best, because your designs can have hundreds of degrees of freedom with complex interaction. Design optimization facilitates the improvement of product drafts by automating the iterative process of comparing the product performance with the desired specifications.

The Direct Matrix Abstraction Program (DMAP) is a unique programming function of Nastran that is available as an add-on for the base module of Simcenter Nastran. With its help, customers can expand the functions of Simcenter Nastran by writing their own applications. DMAP can be used for:

• The calculation of additional steps for structural responses,
• The transfer of revised data from and to Simcenter Nastran (e.g. externally produced system matrices)