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RF-DYNA - Software for optimized random finite element simulation using LS-DYNA
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DOI：10.1016/j.advengsoft.2024.103724.png)
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This paper presents a user-friendly software to assign spatially distributed material properties to nonlinear finite element models in LS-DYNA using discretized three dimensional random fields and random variables. The purpose of the software is to enable probabilistic analysis frameworks that incorporate results from LS-DYNA simulations with random material properties. The software leverages the existing well-established deterministic formulation of LS-DYNA by utilizing inbuilt material constitutive laws. K-nearest neighbors spatial interpolation and k-means clustering are implemented to streamline the generation and assignment of random fields to parts in LS-DYNA models. The functionality of the software is demonstrated through real-life safety assessments of two marine structural elements composed of steel-reinforced concrete. Analysis results demonstrated the robustness and efficiency of the software where it can be successfully integrated into analysis frameworks to evaluate the safety of structural members.
Keyword:
Random fields
Finite element method
Spatial variability
Random finite element
Reliability analysis
Computer software
期刊
IF:
5.7
论文数:
3.4K
被引数:
1.2W
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