Licensing Opportunity: A New Hybrid Explicit-Implicit Method to Accelerate Large-Scale Transient Thermal Stress Analysis

Invention Reference Number: 202405606 Finite element (FE) numerical computation method is widely used to facilitate the design and optimization of manufacturing processes using two types of solvers, implicit and explicit. The implicit solver is difficult to handle very large-scale problems due to the complexity to solve a large matrix of equations. The explicit solver has a requirement of a very small time increment.

This technology is a novel hybrid explicit-implicit FE numerical method designed to accelerate simulation of very large-scale transient thermomechanical processes such as welding and additive manufacturing. Description This technology is a new algorithm for a new hybrid approach for thermomechanical processes such as welding and additive manufacturing. This combines two approaches, implicit and explicit simulation.

The code can automatically switch from one to another for accuracy prediction, and still can scale up. The algorithm is designed to run on today’s GPU-based high performance computers, drastically reducing computational time while yielding good results for a large class of transient thermomechanical processes characterized by numerous heating and cooling cycles such as multi-pass welding and additive manufacturing of metallic structures.

Benefits Shortens computational time Improved accuracy Solves large-scale thermomechanical AM issues Reduced produce development time Applications and Industries Additive manufacturing Welding Contact To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.