User-defined Friction Models with Ansys UPF UserInter
In this course, you will learn how to program, compile and implement user-defined friction models in Ansys. This training is offered as a 1-day course.
Duration
1 day
Prerequisites
Basic knowledge of Ansys Mechanical, Programming knowledge in Fortran
Software used
Ansys Mechanical
- Gain a deeper understanding of the mechanical modeling of dry sliding friction
- Learn about Ansys User Programmable Features (UPF)
- Understand algorithmic aspects of computational friction mechanics
- Program, compile, and implement user-defined friction models
Description
User-defined friction models – using the Fortran subroutine UserInter() – can be easily implemented in Ansys via the implicit Mechanical APDL solver. The focus of this course is on the mechanical, computational and software aspects of the developmental activities that lead up to the implementation of user-defined friction models in engineering practice. You will receive a concise introduction to UPF technology and then – in interactive group work – put to use all of the practical steps for implementing a physically well-founded friction model with UserInter() in Ansys.
We introduce concepts, algorithmic principles and Fortran programming examples that are sufficient for systematically describing and calculating sliding friction processes in mechanical contacts. Building on your personal level of knowledge, you will learn the basic theory and algorithms of sliding friction. Furthermore, you will learn to understand UPF technology in general as well as for sliding friction and how to configure your subroutines and use them for your analysis in Ansys. This course is aimed at simulation engineers, developers and researchers who, as part of their tasks, want to expand the list of isotropic sliding friction models available in Ansys MAPDL.
Detailed agenda for this 1-day training
Day 1
01 User-programmable features (UPFs): possibilities and prerequisites
- Hardware and software requirements
- Review of relevant Ansys documentation:
Guide to user-programmable features (UPFs) - Procedure for creating your own Ansys application
02 Developing your first UPF app (Workshop)
- Implement new APDL commands in Ansys
- Learn how to build, configure and apply UPFs
03 Developing the basic UserInter app (Workshop)
- Continuum mechanics of frictionless contact interaction
- Computational mechanics of frictionless contact interaction
- Implementation, re-linking, and configuration, of frictionless contact interaction in Ansys MAPDL
04 Adding more features to the UserInter app (Workshop)
- Incremental variational Coulomb friction
- Extending the USERINTER app to include isotropic friction
- Implementation, re-linking, configuration and verification of extended USERINTER app
Your Trainers
Dr.-Ing. Slav Valterov Dimitrov
Placement in the CADFEM Learning Pathway
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