Model-Free Data-Driven Inference in Computational Mechanics

Abstract

We extend the model-free Data-Driven computing paradigm to solids and structures that are stochastic due to intrinsic randomness in the material behavior. The behavior of such materials is characterized by a likelihood measure instead of a constitutive relation. We specifically assume that the material likelihood measure is known only through an empirical point-data set in material or phase space. The state of the solid or structure is additionally subject to compatibility and equilibrium constraints. The problem is then to infer the likelihood of a given structural outcome of interest. In this work, we present a Data-Driven method of inference that determines likelihoods of outcomes from the empirical material data and that requires no material or prior modeling. In particular, the computation of expectations is reduced to explicit sums over local material data sets and to quadratures over admissible states, i. e., states satisfying compatibility and equilibrium. The complexity of the material data-set sums is linear in the number of data points and in the number of members in the structure. Efficient population annealing procedures and fast search algorithms for accelerating the calculations are presented. The scope, cost and convergence properties of the method are assessed with the aid selected applications and benchmark tests.

arXiv commentPreprint submitted to Elsevier

References in corpus (13)

• Data-driven computational mechanics
• Data Driven Computing with Noisy Material Data Sets
• Bayesian inverse problems with Gaussian priors
• Population Annealing with Weighted Averages: A Monte Carlo Method for Rough Free Energy Landscapes
• Comparing Monte Carlo methods for finding ground states of Ising spin glasses: population annealing, simulated annealing and parallel tempering
• Population Monte Carlo algorithms
• Efficient Data Structures for Model-free Data-Driven Computational Mechanics
• GPU accelerated population annealing algorithm
• Mixed-Integer Programming Formulation of a Data-Driven Solver in Computational Elasticity
• On the Brittleness of Bayesian Inference
• Kullback-Leibler Approximation for Probability Measures on Infinite Dimensional Spaces
• Understanding population annealing Monte Carlo simulations
• Automatic Step Size Selection in Random Walk Metropolis Algorithms

Cited by in corpus (3)

• Recent Advances and Applications of Machine Learning in Experimental Solid Mechanics: A Review
• Convolution finite element based digital image correlation for displacement and strain measurements
• A generalized dual potential for inelastic Constitutive Artificial Neural Networks: A JAX implementation at finite strains