石粉在机制砂上的壁形机理

IF 0.3 4区工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY

Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria Pub Date : 2023-01-01 DOI:10.23967/j.rimni.2023.09.005

L. Yu, P. Sun, S. Han, Y. Song, H. Wu, X. Tong, P. Peng

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引用次数: 0

摘要

目前对砂石集料力学性能的研究主要集中在颗粒的成型过程上，缺乏对破碎机理的研究。本文首先定义了石粉壁的成型过程，并采用多次小能量破碎的方法探讨了砂骨料的破碎机理。通过仿真和实验研究了能量的影响。通过建立相应的接触数学模型，分析了机制砂破碎机理。结果表明，石粉墙体在冲击作用下包含两种数学模型:低冲击速度下的弹塑性模型和高冲击速度下的弹脆模型。

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The stone powder wall shaping mechanism on machine-made sand

At present, the researches on the mechanical properties of sand aggregate mainly focus on the shaping process of particles, and lack the researches on the crushing mechanism. This paper first defines the shaping process of stone powder wall, and explores the crushing mechanism of sand aggregate by adopting multiple times of small energy crushing. The effect of energy is investigated by simulation and experiment. The machine-made sand crushing mechanism is analyzed by establishing corresponding contact mathematical models. The result shows that the stone powder wall involves two mathematical models under impact: the elastic-plastic model at low impact velocity and the elastic-brittle model at high impact velocity.

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来源期刊

Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria 工程技术-工程：综合

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： International Journal of Numerical Methods for Calculation and Design in Engineering (RIMNI) contributes to the spread of theoretical advances and practical applications of numerical methods in engineering and other applied sciences. RIMNI publishes articles written in Spanish, Portuguese and English. The scope of the journal includes mathematical and numerical models of engineering problems, development and application of numerical methods, advances in software, computer design innovations, educational aspects of numerical methods, etc. RIMNI is an essential source of information for scientifics and engineers in numerical methods theory and applications. RIMNI contributes to the interdisciplinar exchange and thus shortens the distance between theoretical developments and practical applications.