基于粒子法的铸造虚拟仿真前处理模拟离散方法  

Discrete Method for Casting Virtual Simulation Pretreatment Based on Particle Method

作　　者：张志焱 牛晓峰[2] 侯华 ZHANG Zhi-yan;NIU Xiao-feng;HOU Hua(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China;School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030030,China)

机构地区：[1]太原科技大学材料科学与工程学院,山西太原030024 [2]太原理工大学材料科学与工程学院,山西太原030030

出　　处：《铸造设备与工艺》2025年第1期56-60,共5页Foundry Equipment & Technology

基　　金：国家自然科学基金联合基金项目(U23A20628)。

摘　　要：在基于粒子法的铸造虚拟仿真前处理方法中,粒子均布程度是影响模拟分析精度和稳定性的重要因素。本文基于粒子法提出了一种与网格法相耦合的方法,该方法借助网格进行粒子生成,可以提高粒子法中计算节点的空间分布质量。通过五角柱模型和轮毂模型验证表明,所提出的粒子初始化分布能够保证计算域内粒子均匀各向同性分布,并减小边界粒子与理论边界的偏差值,对于铸造粒子法模拟精度的提升具有积极意义。In the pretreatment method of casting virtual simulation based on particle method,the degree of particle uniformity is an important factor affecting the accuracy and stability of simulation analysis.Based on the particle method,this paper proposes a method coupled with the grid method,which can improve the spatial distribution quality of the computing nodes in the particle method by using the mesh for particle generation.The pentagonal column model and the hub model show that the proposed particle initialization distribution can ensure the uniform isotropic distribution of particles in the computational domain and reduce the de⁃viation between the boundary particles and the theoretical boundary,which is of positive significance for the improvement of the simulation accuracy of the casting particle method.

关 键 词：粒子法 粒子均布 边界网格 网格优化 各向同性 

分 类 号：TG24[金属学及工艺—铸造]