[Oral Presentation]GeoTaichi：基于GPU加速的高性能物质点—水平集离散元耦合方法模拟器

Organized By

Hohai University

Monash University

Co-organized by

Southeast University

Jiangxi University of Science and Technology

Northeast University

DUT-BSU Scientific Research and Innovation Center

Suzhou University of Science and Technology

State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment

Sponsoring agency

KELI SDEM Software (Dalian) Co., Ltd.

Sugon Smart Computing Information Technology Co., Ltd.

Beijing Paratera Technology Co., Ltd.

Simpop Information Technology Co., Ltd.

Important Dates

Conference Announcement

December 2023, release First Round Announcement
Abstract Submission Deadline
March 31^th, 2024
Paper Submission Deadline
April 30^th, 2024
Registration
From January 1^st, 2024
Conference Schedule
May 31^st (Friday), 2024 On-Site Registration
June 1^st to 3^rd, 2024 Conference

GeoTaichi：基于GPU加速的高性能物质点—水平集离散元耦合方法模拟器

ID：73 Submission ID：220 View Protection：ATTENDEE Updated Time：2024-04-09 22:36:49 Hits：1690 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

Session：[No Session] » [No Session Block]

No files

Abstract

目前大规模不规则颗粒的高性能计算仍然是一大挑战。本研究利用Taichi并行语言，提出在GPU框架下的水平集离散元方法（LSDEM），实现大尺度任意形状碎石颗粒流的高效率模拟。在此基础上，利用物质点法（MPM）模拟土体力学响应，开发高性能物质点-水平集离散元（MP-LSDEM）耦合方法，用于模拟土体-碎石颗粒的相互作用。提出多层次邻居网格搜索方法，较传统方法计算效率提升35%，并能适用于极端颗粒级配工况。此外引入有向距离场与零水平集函数模板，对不同形状颗粒进行分组，大大节省计算内存。针对LSDEM与MPM域的耦合问题，实现一种基于接触力学的鲁棒算法，保证颗粒间无穿透性。通过不同数值算例，验证了所提出的方法的有效性，证明其能够有效地模拟具有各类复杂岩土工程问题。

Keywords

离散元,物质点,颗粒材料,不规则颗粒,高性能计算

Speaker

史亦皓

浙江大学

Submission Author

史亦皓浙江大学

宁郭浙江大学建筑工程学院滨海和城市岩土工程研究中心

杨仲轩浙江大学建筑工程学院

Sponsored By

Hohai University

Panel of Computational Mechanics on Granular Materials, Working Party of Computational Mechanics, Chinese Society of Theoretical and Applied Mechanics

Jiangsu Society of Theoretical and Applied Mechanics