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Non-linear structural mechanics calculations with Ansys Mechanical

Understanding large deformations, contact and nonlinear materials

CADFEM
Training eLearning
Structural mechanics
Structural mechanics

This course provides you an introduction to the world of nonlinearities and enables you to understand convergence behavior.

Today, nonlinear calculations are an integral part of the development process. Special materials, complex manufacturing processes, and optimal resource utilization all make it necessary for nonlinear effects to be taken into account for the purposes of simulation. Do you already ...

more details of product

Overview
Level:
Advanced
Target group:
Users, Students, Instructors
Prerequisites:
Basic knowledge of Ansys Mechanical
Benefits:
  • Familiarity with the various types of non-linearities
  • Detailed know-how concerning the nonlinear simulation process
  • Influence both convergence behavior and how your analysis performs
  • Share experiences and discuss typical applications with attendees
Applications:
Contact, Linear/Non-linear Simulation, Material models
Software used:
Ansys Mechanical
Level
Advanced
Target group
Users, Students, Instructors
Prerequisites
Basic knowledge of Ansys Mechanical
Benefits
  • Familiarity with the various types of non-linearities
  • Detailed know-how concerning the nonlinear simulation process
  • Influence both convergence behavior and how your analysis performs
  • Share experiences and discuss typical applications with attendees
Applications
Contact, Linear/Non-linear Simulation, Material models
Software used
Ansys Mechanical
agenda day 1
  • Nonlinear task classes and solution methods
  • Ansys Solver Settings
  • Geometric nonlinearities
  • Stability problems
agenda day 2
  • Nonlinear Materials – Plasticity
  • Nonlinear Materials – Hyperelasticity
  • Contact Modelling
  • Convergence, performance, accuracy

eLearning offer

Available dates

Not the right offer? No suitable date? Whether eLearning, classroom courses, live online training or customized workshops - together we identify the best option for you.

Our offer in detail

This training is offered as a 2-day course or alternatively as
a self-paced eLearning course, in which you should invest a total of 2 learning day(s) with your own time allocation.

Day 1

01 Nonlinear task classes and solution methods

  • Classification of non-linear effects
  • The Newton method, with examples
  • Characteristic convergence behavior relating to different tasks
  • Workshop: Tensile test on a standard specimen

02 Ansys Solver Settings

  • Basic settings: Load step and time step control, iterations, convergence criteria, Newton-Raphson residuals, element violations
  • Advanced settings: Newton-Raphson options, Line-search, predictor
  • Special topics: arc length method, stabilization dynamic analysis, semi-implicit, restarting
  • Workshop: convergence behavior with strongly differing materials

03 Geometric nonlinearities

  • Examples of geometric nonlinearities: Stress-stiffening, Spin-softening, corotating element coordinate systems
  • Large displacements and small deformations
  • Large deformations: true strains and true stresses
  • Deformation-dependent loads
  • Workshop: designing a hybrid cord
  • Workshop: transformation of a stress-strain curve

04 Stability problems

  • Classification of stability problems (buckling, punctures, load capacity)
  • Causes of stability problems
  • Eigenvalue buckling analysis
  • Nonlinear stability analyses: arc length method, stabilization, transient analysis
  • Workshop: stability analysis of a strut

Day 2

05 Nonlinear Materials – Plasticity

  • Fundamentals of plasticity theory (flow condition, flow rule, strain hardening)
  • Typical hardening models (isotropic and kinematic)
  • Material definition in Ansys Mechanical
  • Determination of the hardening curve using tensile test data
  • Characteristic features of postprocessing
  • Workshop: deep-drawing analysis

06 Nonlinear Materials – Hyperelasticity

  • Overview of implementations
  • Basics of hyperelasticity
  • Typical distortion energy functions & how to define these in Ansys
  • Parameter fitting in Ansys Workbench, based on the tensile test
  • Element formulations
  • Workshop: the axial and torsional stiffness of a chassis bushing

07 Contact Modelling

  • Contact analysis workflow
  • Overview of the main contact settings: behavior, formulation, detection method, contact stiffness.
  • Evaluation of contacts
  • Comparison of contact formulations: penalty, normal Lagrange, augmented Lagrange
  • Workshop: transmittable torsional moment of a transverse press brace

08 Convergence, performance, accuracy

  • Typical convergence problems and error messages relating to rigid body movements and element distortions, plus corrective actions
  • Increasing performance: choosing the right solver (direct or iterative solver) and also parallelizing the analysis (SMP and DMP)
  • What impacts the accuracy of an analysis
  • Special techniques: substructures and adaptive remeshing
  • Workshop: substructure model of a Hertzian contact
  • Workshop: adaptive re-linking in an intendency analysis

Today, nonlinear calculations are an integral part of the development process. Special materials, complex manufacturing processes, and optimal resource utilization all make it necessary for nonlinear effects to be taken into account for the purposes of simulation. Do you already have experience with linear FEM? If so, this course offers you a practice-oriented introduction to solving typical tasks in which large deformations, nonlinear material models or contacts have to be considered. Working with Ansys Mechanical, you will learn important solver settings and receive basic background knowledge, detailed explanations of convergence behavior, and proven practical tips for your daily work.

  • Simulation users who have gained some initial experience with Ansys Mechanical and want to work on non-linear tasks
  • Experienced users who want to better understand and control convergence behavior
  • Project managers and decision-makers who shape expectations of numerical analysis and want to draw the right conclusions from the results

This course will provide you with introductory simulation tasks involving large deformations, stability problems, plasticity, hyperelasticity, and contacts. You will gain a detailed understanding of what happens in the background during the solution process and how you can positively influence the convergence behavior and performance of your analysis. Practice-oriented workshops will give you time to immediately apply your knowledge.

Dr.-Ing. Hendrik Donner
CAE Engineer, CADFEM GmbH, Chemnitz
Bernard Feuillard
Engineering Services, CADFEM (Suisse) AG, Renens
Dr. sc. Jörg Helfenstein
Head of Seminars, CADFEM (Suisse) AG, Aadorf
Dr. sc. Juan Escallòn
CAE Engineer, CADFEM (Austria) GmbH, Wien
Dr.-Ing. Markus Kellermeyer
Head of eLearning, CADFEM GmbH, Grafing
Andre Stühmeyer
CAE Engineer, CADFEM GmbH, Hanover

Do you have questions on the training or the eLearning?

When will I receive the final confirmation for my training booking?

Straight after you sign up, an automatic confirmation of receipt will be sent to the email addresses you provided. Once you have successfully verified the data you provided, you will receive your personalized sign-up confirmation, containing further information on seminar fees, the billing address, hotel recommendations, etc., by email within two to three working days.  

As soon as the minimum number of attendees has been reached, you will receive a final training confirmation containing further information on how to get to the venue. We recommend that you wait until you have received this final confirmation before booking your travel and accommodation.

If the minimum number of attendees is not reached, we reserve the right to cancel the training seven days before it is due to start at the latest. We are happy to help you change your booking to an alternative date. Please note that we accept no liability for hotel or travel bookings that attendees have already made.

When is the sign-up deadline for a training?

Training places will generally be allocated based on the order in which attendees sign up. For this reason, we always recommend booking for your desired date as early as possible.

As long as a seminar still has free places, it can be booked.

When do the training courses begin and end?

Usually the training courses start at 9:00 am and end at 5:00 pm of the respective local time. The actual course times will be stated in the booking confirmation. Please note that, depending on the training host, there may be a possible time shift between your and the provider's local time. Therefore all local times are provided with the valid time shift to Greenwich Mean Time (GMT). 

The following time difference to GMT during summer/winter time applies to the individual training providers:

Can I test the eLearning offer without obligation?

To get a clear impression of our online learning format, we offer you a trial allowing you access to the starting module of an eLearning seminar of your choice. No costs, no cancellation period or anything similar. Moreover, with this free test access you can check all the technical requirements for a smooth learning process. You can easily request the free module from any eLearning course.

How much time should I allow for an eLearning course?

Each online seminar day comprises four eLearning modules. You should ideally allow 90 to 120 minutes of uninterrupted learning time for each module. This will allow you to acquire the knowledge provided by a module and to consolidate it through quiz questions and Ansys exercises. By dividing each module into micro learning units, you can also make good use of smaller time windows, such as on your commute.

For how long can I access the learning content?

A prerequisite for using the learning contents of booked eLearning seminars is the possession of an access to the CADFEM learning platform. This access is valid for 12 months and can be extended annually. This allows you to decide how long you want to have access to your numerous videos, PDF documents and quiz questions.

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What CADFEM customers are saying

Prof. Dr.-Ing. Thomas Binder<br />Program director for Mechanical Engineering, Ingolstadt University of Applied Sciences
Prof. Dr.-Ing. Thomas Binder
Program director for Mechanical Engineering, Ingolstadt University of Applied Sciences

The CADFEM eLearning Nonlinear Simulation with Ansys Mechanical offers a user-friendly learning environment. The course focuses on understanding the mechanical problem, supported by continuous practice with Ansys Workbench. I particularly like the fact that the instructor addresses the limitations of the simulation, thus underlining his technical competence.

Additional Offers

The right training, hardware and additional software products are the keys to success when it comes to a quick introduction to simulation.