Method of constructing recycled concrete three-dimensional random spherical aggregate model based on Python

Abstract

The invention discloses a method of constructing a recycled concrete three-dimensional random spherical aggregate model based on Python, comprising: defining an array to store diameter, coordinate andvolume parameters; inputting basic parameters, including aggregate content, model dimensions, and aggregate microscopic size; building inside, a particle size distribution function and a random function; randomly generating a floating point number from particle sizes d1 to d2 to obtain a random number within a required range; grading the particle sizes; dividing a deployment space into uniform small cells, deploying from the large aggregate particle size to the small aggregate particle size, randomly generating deployment positions, and performing circulating deployment to obtain a satisfactory aggregate model; subjecting spherical aggregates to plane translation to obtain an outer interface region, old hardened mortar and an inner interface region. The model is a damage plasticity modelin ABAQUS software; the parameter values are stored in the array mat; the model is saved; the method that has higher speed and efficiency is provided for researches on numerical simulation of recycledconcrete.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a method for constructing a three-dimensional random spherical aggregate model of recycled concrete based on python. Background technique [0002] Recycled concrete refers to the concrete that uses recycled coarse aggregate to partially or completely replace natural aggregate. The development and utilization of recycled concrete technology is the key to the resource utilization of construction waste. Due to the complexity of the mesostructure of recycled aggregates and the differences in test conditions, it is difficult to make further breakthroughs in the research of recycled concrete simply relying on experimental research methods. Selecting a reasonable calculation model for numerical simulation can avoid the limitation of test conditions and the influence of human factors, so as to realize the link between the mesoscopic structure and macroscopic mechanical properties of...

AI Technical Summary

Problems solved by technology

First of all, the calculation model of fixed particle number cannot reflect the randomness of aggregate; secondly, the mesoscopic structure of recycled aggregate is complex, and its multi-interface characteristics were not considered when establishing the mesoscopic model; finally, most recycled concrete aggregates The material model is based on languages ​​such as Matlab, Fortran, and C++. Since these languages ​​do not have the functions of defining material properties and dividing grids, it is necessary to establish an aggregate model and import it into finite element software for subsequent steps, which adds a lot of workload

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