Ansys

This HELP file is an aid to DANTE® users who are using ANSYS to build finite element models. It is not meant to replace the HELP system within ANSYS, nor should it be viewed as a complete, authoritative guide to model development for general FEA analysis. This help file includes guidelines for developing models for heat treatment simulations with DANTE®.

DANTE is a set of user subroutines that link into the ANSYS solver. The DANTE subroutines combine mechanical models, metallurgical phase transformation models and mass diffusion models that couple with ANSYS’ transient thermal and static stress/displacement solvers to calculate a steel component’s response to a heat treatment process. The DANTE user must have a valid ANSYS license in order to run DANTE heat treatment models.

DANTE is a set of user subroutines combined with ANSYS. The DANTE user subroutines are compiled as ANSYS dynamic link library (.dll) files for our customers. Currently, DANTE supports only Windows OS. For more detailed information, please contact DANTE Solutions, Inc.

The multiphase mechanical model implemented in DANTE was developed at Sandia National Laboratories, Livermore, CA. It is based on an internal state variable approach to modeling the mechanical behavior of a solid. This mechanical model considers the strain hardening in all the directions, as well as the material’s response during reverse loading, which is important because the internal stresses reverse due to the thermal and phase transformations during heat treatment processes. The mechanical properties of each phase are input, and the mechanical response of the composite structure as it changes during heat treatment is calculated.

The metallurgical transformation models include both diffusive and martensitic transformations. Heat up kinetics for slow (equilibrium) and rapid formation of austenite are included, and these were developed by DANTE Solutions for various heating methods, such as induction heating, flaming heating, and laser heating, etc. A low temperature tempering model is developed and included in the current DANTE version. Temperature, time and stress state information is passed into these models, and the material response in terms of phase change is calculated. The updated phase fractions are passed to the thermal and mechanical models. The data input to characterize the transformation kinetics includes steel chemistry, grain size, and kinetics parameters derived from dilatometry, TTT, CCT, and Jominy.

Contact Information:

DANTE Solutions, Inc. 7261 Engle Road, Suite 105 Cleveland, OH 44130, USA Phone: [phone] Email: [e-mail] Website: www.Dante-solutions.com Latest update: December 30, 2024