MeLM, a generative pretrained language modeling framework that solves forward and inverse mechanics problems

• URL: http://arxiv.org/abs/2306.17525v1
• Date: Fri, 30 Jun 2023 10:28:20 GMT
• Title: MeLM, a generative pretrained language modeling framework that solves forward and inverse mechanics problems
• Authors: Markus J. Buehler
• Abstract summary: We report a flexible multi-modal mechanics language model, MeLM, applied to solve various nonlinear forward and inverse problems. The framework is applied to various examples including bio-inspired hierarchical honeycomb design and carbon nanotube mechanics.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We report a flexible multi-modal mechanics language model, MeLM, applied to solve various nonlinear forward and inverse problems, that can deal with a set of instructions, numbers and microstructure data. The framework is applied to various examples including bio-inspired hierarchical honeycomb design, carbon nanotube mechanics, and protein unfolding. In spite of the flexible nature of the model-which allows us to easily incorporate diverse materials, scales, and mechanical features-it performs well across disparate forward and inverse tasks. Based on an autoregressive attention-model, MeLM effectively represents a large multi-particle system consisting of hundreds of millions of neurons, where the interaction potentials are discovered through graph-forming self-attention mechanisms that are then used to identify relationships from emergent structures, while taking advantage of synergies discovered in the training data. We show that the model can solve complex degenerate mechanics design problems and determine novel material architectures across a range of hierarchical levels, providing an avenue for materials discovery and analysis. Looking beyond the demonstrations reported in this paper, we discuss other opportunities in applied mechanics and general considerations about the use of large language models in modeling, design, and analysis that can span a broad spectrum of material properties from mechanical, thermal, optical, to electronic.

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