A Parameter Estimation Algorithm and Extensive Numerical Simulations for the Cap Model
Abstract
The inviscid two-invariant cap model is considered for geological materials such as concrete. A systematic constrained optimization procedure based on the Marquardt-Levenberg algorithm and the Armijo step-size rule is developed to determine values of the model parameters from available experimental data. The predictive capabilities of the cap model and the efficiency of the parameter estimation procedure are assessed through extensive numerical simulations based on well-documented experimental concrete data from the University of California. Keywords: Rock mechanics, Concrete, Computer programs, Parameter estimation, Numerical simulations, Cap model, Colorado concrete data, Plasticity. (jhd)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 30, 1985
- Accession Number
- ADA199204
Entities
People
- Jiann-wen Ju
- Juan C. Simo
- Karl S. Pister
- Robert L. Taylor
Organizations
- University of California, Berkeley