SimAcademy Webinar Archive: Adaptive Time Stepping Procedure in Implicit Nonlinear Analysis
Load (time) stepping procedure is important in nonlinear analysis. The NLSTEP bulk data provides a unified load stepping scheme that replaces existing options entries such as NLPARM, TSTEPNL, NLPCI, and NLADAPT. This option can be used for statics and dynamics, fixed and adaptive load stepping, definition of convergence criteria and other options for mechanical, thermal and coupled analysis. In MSC Nastran 2012, NLSTEP option is extended with a new keyword that automatically sets up the entries for the time stepping adjustment and convergence tolerance. This makes it possible to use smart default based on users’ judgment of the nonlinearity of the model to be analyzed.
SimAcademy Webinar Archive: Introduction and Overview of MSC Nastran Embedded Fatigue
Fatigue life analysis of mechanical systems has historically been performed as a post processing operation, gathering and entering the three fundamental inputs of finite element stresses, load time histories and fatigue material properties (S-N curves) into a separate and distinct fatigue solver. MSC Nastran 2013 introduces a fundamental paradigm shift in this logic through a direct integration of fatigue life solutions into the finite element solver. This new technology is entitled Nastran Embedded Fatigue, or NEF for short.
SimAcademy Webinar Archive: Failure Analysis of Composite Structures
MSC Nastran and Marc provide composite failure technology to evaluate the ultimate capacity of composite structures by progressively failing the plies and to simulate composite delamination, debonding and crack propagation. This presentation briefly review existing methods for composite failure analysis such as progressive failure analysis, delamination based on stress criterion and cohesive interface, and VCCT crack propagation by means of splitting element, global remeshing and breaking glued contact, followed by more detailed discussion and demo of new failure analysis features.
SimAcademy Webinar Archive: Academic - Getting Started Building Models in Adams/View
Adams/View is a very capable pre- and post-processor for the underlying Adams/Solver simulation engine. New Adams users need to be familiar with the building blocks used to create an Adams model, the Adams nomenclature and the layout/philosophy of Adams/View.
SimAcademy Webinar Archive: Academic - Flutter Analysis Using MSC Nastran
MSC Nastran provides a flutter analysis solution as one part of the aeroelastic analysis capability based on unsteady subsonic and supersonic flow. The unsteady aerodynamic methods are small perturbation methods for flat plates. The flutter analysis solution is used to determine the aeroelastic stability of a fixed wing aircraft. The flutter summary results provide damping and frequency values versus velocity listed in the standard (f06) output and/or plotted with the venerable XYPLOT requests. Complex eigenvector (flutter mode shape) results may be plotted with Patran or FLDS.
SimAcademy Webinar Archive: Adams - Working with Adams/Car Templates
Adams/Car allows the user to create assemblies of suspensions and full vehicles, and then analyze them to understand their performance and behavior. The underlying technology uses templates to describe common subsystems in the vehicle. This session of SimAcademy is meant for new Adams/Car users. The basics of Adams/car will be reviewed with an overview of assemblies, subsystems and templates. This will be followed by a demonstration of how to create an example template which contains a REQUEST that operates across different templates.
SimAcademy Webinar Archive: Patran’s Utilities Menu
With dozens of tools covering everything from geometry to postprocessing, the Utilities menu in Patran has a wealth of functionality that is often overlooked. This presentation will highlight some of the most useful tools with a view to helping you to get the most out of Patran.
SimAcademy Webinar Archive: MSC Nastran Multi-Physics Simulations
Topics for this session include: What are the new multi-physics features in MSC NASTRAN 2010? How do we use these features? What is the required users’ input?
SimAcademy Webinar Archive: An Introduction to Buckling Analysis Using MSC Nastran and Patran
Buckling is a critical state of stress and deformation, at which a slight disturbance causes a gross additional deformation, or perhaps a total structural failure of the part. Structural behavior of the part near or beyond 'buckling' is not evident from the normal static Analysis. Therefore, a Buckling analysis is required. Also, From an FE analysis point of view, a buckling analysis is used to find the lowest multiplication factor for the load that will cause a structure to buckle. The purpose of such an analysis is to calculate the buckling load factor and buckled shape of the structure.. This webinar will introduce various methods of performing Buckling Analysis in MSC Nastran and Patran.