User’s Guide for the Hierarchical MultiScale – Vectorized User MATerial(HMS-VUMAT) Model 1.0

Author(s):

Joshua C Crone, Zachary A Wilson, Kenneth W Leiter, Jaroslaw Knap, and Richard Becker

Abstract:

The HMS-VUMAT library provides a flexible interface for coupling multiscale material models into widely used finite element analysis (FEA) codes. The use of high-fidelity subscale models can improve accuracy and predictive capability, particularly for material systems with limited experimental data or high senstivity to microstructure. However, the implementation and execution of multiscale models is labor intensive and computationally expensive. The HMS-VUMAT library significantly reduces these costs by automating the communication, scheduling, load balancing, concurrent execution, and monitoring of subscale model evaluations with efficient use of high-performance computing resources. To create a new multiscale model, users can select any black-box subscale model and then create input and output filters within the HMS-VUMAT library. The library simplifies the creation of these filters and provides tools for debugging and profiling multiscale simulations. The resulting multiscale model will be compatible with any FEA code that supports the Abaqus VUMAT interface. This enables the use of high-fidelity material models in commercial, government, and other widely available FEA tools.