arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2202.11289cs.LG
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基于图卷积网络的CAE零件分类

Classification of Computer Aided Engineering (CAE) Parts Using Graph Convolutional Networks

General Motors(通用汽车公司)

Alok Warey, Rajan Chakravarty

摘要:

CAE工程师处理分布在多个车身模型上的数百个零件。采用图卷积网络(GCN)开发了CAE零件分类器。来自代表性身体模型的多达866个不同部位被用作训练数据。部件表示为三维(3-D)有限元分析(FEA)网格,每个节点的值在x、y、z坐标系中。将基于GCN的分类器与基于全连接神经网络和PointNet的模型进行了比较。使用测试集评价训练模型的性能,该测试集包括来自训练数据的部件,但具有额外的孔、旋转、平移、网格细化/粗化、网格模式的变化、沿x和y轴的镜像、地形特征的变化以及网格节点排序的变化。经过训练的GCN模型能够在测试集上实现88.5%的分类准确率,即,它能够从866个零件的数据集中找到正确的匹配零件,尽管与基线零件存在显著差异。在这项研究中展示的CAE零件分类器可能是非常有用的工程师过滤CAE零件分布在几个身体模型,以找到符合他们的要求的零件。

英文摘要:

CAE engineers work with hundreds of parts spread across multiple body models. A Graph Convolutional Network (GCN) was used to develop a CAE parts classifier. As many as 866 distinct parts from a representative body model were used as training data. The parts were represented as a three-dimensional (3-D) Finite Element Analysis (FEA) mesh with values of each node in the x, y, z coordinate system. The GCN based classifier was compared to fully connected neural network and PointNet based models. Performance of the trained models was evaluated with a test set that included parts from the training data, but with additional holes, rotation, translation, mesh refinement/coarsening, variation of mesh schema, mirroring along x and y axes, variation of topographical features, and change in mesh node ordering. The trained GCN model was able to achieve 88.5% classification accuracy on the test set i.e., it was able to find the correct matching part from the dataset of 866 parts despite significant variation from the baseline part. A CAE parts classifier demonstrated in this study could be very useful for engineers to filter through CAE parts spread across several body models to find parts that meet their requirements.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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