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SimAcademy Webinar Archive: Marc Global-Local Analysis

Local variations, such as geometry changes and mesh refinement, usually need a complete re-analysis of the model. If the changes have a negligible influence on the solution sufficiently far away from the changed region, only a local part can be analyzed using a global-local analysis, which is also called structural zooming. Marc structural zooming capability automates the global-local analysis to achieve a better resolution in local area where stress gradient is high or mesh has to be changed from shell to solid. In the Marc 2010 version, the global-local analysis has been expanded to allow global remeshing.

SimAcademy Webinar Archive: Adams - Vibration Analysis of Full Dynamic Systems

The study of vibration problems of full dynamic systems can be accomplished in different ways. MSC/MD_ADAMS Vibration is one of them; a system is linearized at a selected operating point and a forced vibration analysis is executed to determine the frequency content of the full system and the main vibration modes that are prevalent on the vibration problem being studied.

SimAcademy Webinar Archive: Body-to-Body Contact Checkout Tools

Body-to-body contact for linear statics has been available for all users since MSC Nastran 2012. Body-to-body contact is a convenient step up from grid-to-grid contact and while simple to define, it isn’t always simple to debug when things get more complicated. This presentation will discuss tools that aid in the understanding of what is going on within the contact routine (f06 file diagnostics) along with graphical means of verifying the contact is as it should be (using Patran). Particular emphasis will be on Permanent Glued Contact, which is commonly used to tie dissimilar meshes together.

SimAcademy Webinar Archive: Adams/Solver Integrator Settings - Achieving Robust, Converged Solution

Many ADAMS users never alter the integrator settings for the Solver from default values. For basic mechanisms the defaults work well; for more challenging models (e.g., contacts, flexible bodies from FEA) there are better settings. Development of new and expanded integration/convergence schemes has been accelerating in recent years. This presentation will give a background on how Adams integrators work, what choices a user can make, how settings can be changed to improve accuracy/convergence, and more.

SimAcademy Webinar Archive: MSC Nastran EXO-6 Report Utility

If you have been looking for a quick way to understand when an MSC Nastran run has completed, quickly assess if it runs successfully, if you can improve the performance by changing some arguments or adjusting memory settings and review all of this in plain English in a conveniently formatted report, then the EXO-6 utility is for you! The EXO-6 parses several of the key MSC Nastran output files and renders all of this valuable data into a simple and readable report. This utility has been well received as indicated by comments similar to the one below.

SimAcademy Webinar Archive: Easy5 and Adams Co-simulation Overview and Examples

Easy5 and Adams are a powerful combination for engineers who need to simulate the interactions of complex mechanical systems. Easy5’s primary strength is block-diagram modeling of complex control systems involving hydraulics, gas dynamics, multiphase, electronics, or other similar systems. Adams is the industry-standard multi-body dynamics (MBD) solution engine that is used to simulate a vast range of mechanical systems from space craft dynamics to automotive handling and comfort to general machinery. Modeling the MBD system in Adams and the control systems in Easy5 is a powerful combination that can capture complex multi-discipline system interactions.

SimAcademy Webinar Archive: Super-Plastic Forming of High Specific Strength Aluminum Alloys

There has been a growing demand for more fuel efficient vehicles than before to reduce the fuel consumption & air pollution. To make the vehicles more fuel efficient companies are looking to reduce the weight of vehicles without compromising safety aspects of the vehicle. This has been driving the automobile industry to explore the possibility of usage of high specific strength material such as Aluminium. Aluminium has excellent characteristics such as high specific strength, good formability, good corrosion resistance & recycling potential

SimAcademy Webinar Archive: FEA Model Checking Using Patran and MSC Nastran

This session will discuss several different suggestions regarding model checking methods available to Patran/MSC Nastran users. Some of these will include Solution Specific Diagnostics, Standard FEA Diagnostics and User Requested Diagnostics. The objective of this session will be to inform analysts about different methods to use before executing a new or existing model.

SimAcademy Webinar Archive: Fluid Structure Interaction with Dytran

Dytran is a powerful explicit solver that can be used to simulate highly nonlinear, short duration events such as impact, car crash, drop test, fuel tank sloshing, occupant safety, explosion, ballistics, bird strike, etc. Lagrangian and Eulerian solvers are implemented to solve the structural and fluid domains of the model. Algorithms allowing interactions between the structure and fluid are introduced so that the fluid flow can deform the structure, and this structure deformation can in turn influences the fluid flow. Topics for this session include: Fluid Structure Interaction (FSI) analysis implementation Coupling Surfaces concept Eulerian Boundary Conditions General Coupling, Fast Coupling and ALE Coupling Techniques

SimAcademy Webinar Archive: MSC Explore - A Tool for Post Processing Results Data for Big Models Across Multiple Load Cases.

MSC Explore is a tool developed to enable rapid identification and visualization of critical design results from MSC Nastran analyses. This is a single program with many capabilities. MSC Explore provides a new way of looking at MSC Nastran results across multiple load cases and multiple results files. Instead of the traditional one—load-case at a time approach, MSC Explore uses an efficient GUI interface for selecting and viewing results across all results. The single tool supports Static, Transient, and Frequency Response Analyses Results, and produces web base HTML and an ASCII text output in addition to graphical output.

SimAcademy Webinar Archive: Tips and Tricks - Troubleshooting Marc/SOL600 Models

When tackling an engineering analysis problem, very seldom we’ll find a problem that is truly linear – as engineers, we always make simplifying assumptions and whenever possible, convert the problem to a linear analysis because they are easier to handle. However, the reality is that in most cases nonlinearities must be taken into account and analysts frequently run into convergence problems. The approach taken to solve a nonlinear problem can be as important as the convergence parameters used and understanding how they work can be the difference between a smooth project or a problematic one.

SimAcademy Webinar Archive: Adams - Incorporating Flexibility Using ViewFlex

Sometimes it’s not clear how the flexibility of a part will affect the dynamics of a particular system. We can add compliance with bushings and/or beams, but this may simplify the problem too much. At the same time, we might not have the time to wait for the structures group to generate a flexible body from a detailed FEM. Adams/ViewFlex provides us with a method to quickly add the flexibility for a complex part to find out how it affects the system behavior. This session of SimAcademy will run through the basics of creating a flexible body using Adams/ViewFlex. Examples will include meshing the part, defining attachment points, selecting the number of modes, including stress modes, along with some guidelines, best practices and more.

SimAcademy Webinar Archive: Marc Material Model, Part I

Marc, as well as SOL 400 and SOL 600 of MSC Nastran, is recognized for its nonlinear capability worldwide. Since nonlinearity includes both large deformation and nonlinear materials, Marc has an extensive material library. This is the first part of the presentation on Marc’s materials in SimAcademy, and it will cover the following most-often-used material models to run nonlinear analyses: Overview of Marc’s material properties Elastic-plastic model Creep model Viscoelastic model Viscoplastic model Necessary tests needed for the above models. Experimental curve fitting using the testing data to get the material properties for above models. This presentation will show you how to enter the material properties in Mentat or Patran.

SimAcademy Webinar Archive: Radiation Using SindaRad and Advection in Sinda.

The Sinda family of thermal design products has been relied on by aerospace and high technology companies worldwide for 50 years. This seminar will show 2 of its capabilities, viz. radiation and advection.

SimAcademy Webinar Archive: Quick Patran Display Tips and Tricks

Sometimes it’s the simplest things that may not be the most obvious. This brief presentation will introduce a few tips on the subject of Patran display options that you may have not known about, but that should prove to be useful as you face more complicated issues. Five display tips and tricks will be presented, from the very rudimentary and mundane, to the slightly advanced and obscure. Most of these tips are taken from an article that was published in the last edition of Simulating Reality magazine.

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