The mechanical and rheological behaviour of particulate and granular assemblies is significantly influenced by the shape of their individual particles. We present a code that implements shape characterisation of three-dimensional particles in an automated and rigorous manner, allowing for the processing of samples composed of thousands of irregular particles within affordable time runs. The input particle geometries can be provided in one of the following forms: segmented labelled images, three-dimensional surface meshes, tetrahedral meshes or point-clouds. These can be complemented with surface texture profiles. Shape characterisation is implemented for three key aspects of shape, namely surface roughness, roundness and form. Also, simplified particle shapes are generated by the code which can be used in numerical simulations to characterise the mechanical behaviour of particulate assemblies, using numerical approaches such as the Discrete Element method and Molecular Dynamics. Combining these two features in one automated framework, the code allows not only to characterise the original granular material but also to monitor how its morphological characteristics change as the shape of the particles is simplified according to the chosen fidelity level for the application of interest.

Program summary

Program Title: SHAPE: SHape Analyser for Particle Engineering

CPC Library link to program files: https://doi.org/10.17632/7h3n5rxtf4.1

Developer's respository link: https://github.com/vsangelidakis/SHAPE

Licensing provisions: GPLv3

Programming language: Matlab

Nature of problem: Automatic morphological description of three-dimensional particles for material characterisation and generation of simplified particle geometries to be used in numerical simulations of their mechanical behaviour.

Solution method: SHAPE [1] analyses the morphology of particles using a range of different morphological descriptors, characterising the form, roundness and roughness of each particle. An object-oriented structure is put in place to ensure a robust handling of the morphological characteristics. The simplified particle geometries are exported in a variety of different formats, supporting some of the most popular Finite Element and Discrete Element codes.

中文翻译：

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SHape粒子工程分析仪（SHAPE）：从成像数据中无缝表征和简化粒子形态

颗粒状和颗粒状组件的机械和流变行为受到其单个颗粒形状的显着影响。我们提供了一个代码，该代码以自动化和严格的方式实现了三维粒子的形状表征，从而允许在可承受的时间范围内处理由数千个不规则粒子组成的样品。输入粒子的几何形状可以以下列形式之一提供：分段的标记图像，三维表面网格，四面体网格或点云。这些可以补充表面纹理轮廓。对形状的三个关键方面（即表面粗糙度）进行了形状表征，圆度和形式。同样，使用诸如离散元素法和分子动力学之类的数值方法，可通过代码生成简化的粒子形状，该代码可用于数值模拟以表征颗粒组件的机械行为。该代码在一个自动化框架中结合了这两个功能，该代码不仅可以表征原始的颗粒材料，而且还可以根据所选的保真度级别监视颗粒的形状，从而简化其形态特征如何变化，从而满足相关应用的需求。

计划摘要

程序标题： SHAPE：用于粒子工程的SHape分析仪

CPC库链接到程序文件： https : //doi.org/10.17632/7h3n5rxtf4.1

开发人员的资料库链接： https : //github.com/vsangelidakis/SHAPE

许可条款： GPLv3

编程语言： Matlab

问题性质：三维粒子的自动形态描述，用于材料表征和简化粒子几何图形的生成，可用于对其机械行为进行数值模拟。

求解方法： SHAPE [1]使用一系列不同的形态描述子分析粒子的形态，表征每个粒子的形状，圆度和粗糙度。放置了一个面向对象的结构，以确保对形态特征的稳健处理。简化的粒子几何以各种不同的格式导出，支持一些最流行的有限元和离散元代码。