NX Nastran

Module

Training Objectives

Key Content

Dynamic Response

Evaluate product performance under dynamic loads using direct integration and modal methods, considering structural, material, and modal damping effects.

1. Frequency response analysis; 

2. Transient response analysis;

 3. Random vibration response analysis; 

4. Shock spectrum response analysis; 

5. Modal reduction techniques; 

Case 1: Modal analysis of a rectangular plate; 

Case 2: Modal analysis using static condensation.

Optimization Techniques

Perform design sensitivity analysis to assess structural impact of design changes; apply optimization algorithms for large models with hundreds of variables.

1. Modal and buckling analysis;

2. Transient response analysis;

3. Frequency response analysis;

 Case 3: Rigid-body modal analysis; 

Case 4: Transient analysis of a square plate; 

Case 5: Modal transient analysis under point excitation.

Response Spectrum & Random Response Analysis

Master response spectrum analysis and random response analysis techniques. 

1. Response spectrum analysis;

2. Random response analysis;

Case 6: Direct frequency response of a plate under forced displacement;

Case 7: Single-input random response analysis. 

Aeroelastic Analysis

Predict dynamic stability and response of structures in wind fields (e.g., aircraft, missiles, bridges, towers). 

1. Dynamic aeroelastic response analysis;

2. Structural flutter analysis; 

3. Aeroelastic design sensitivity and optimization;

4. Subsonic/supersonic analysis; 

Case 8: Flutter analysis of a TV tower;

Case 9: Aeroelastic analysis of power lines.

Superelements

Decompose large finite element models into smaller substructures for efficient analysis (e.g., aircraft, vehicles). 

1. Superelement concepts; 

2. Superelement applications; 

3. Superelement reduction for dynamic analysis;

Case 10: Stamping analysis of a rigid body; 

Case 11: Deformation analysis of aircraft assembly.

Advanced Nonlinear Analysis

Master SOL601/SOL701 solvers for nonlinear problems.

1. Material nonlinearity;

2. Viscoelastic/hyperelastic materials; 

3. Geometric nonlinearity; 

4. Contact problems;

Case 12: Displacement calculation of a tire compressed between plates.

Rotor Dynamics

Master SOL110 solver for rotor dynamics.

1. Critical speed prediction and synchronous vibration response;

2. Threshold speed for instability and transient response;

3. Asymmetric/solid rotor model analysis; 

Case 13: Rotor dynamics analysis of an engine turbine.