[Oral Presentation]连续非连续框架下的颗粒计算方法及其在爆炸冲击领域的应用

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

连续非连续框架下的颗粒计算方法及其在爆炸冲击领域的应用

ID：213 Submission ID：329 View Protection：ATTENDEE Updated Time：2024-04-30 10:29:54 Hits：447 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

本文重点介绍了连续-非连续计算框架下两种新的颗粒计算方法，一是用于解决在高速冲击模拟中因网格畸变导致系统能量发散问题的基于颗粒接触的二维无网格方法(PCMM)，该方法通过接触对的演化更新实现旧单元的删除及新单元的重建，通过在单元内引入流体弹塑性模型实现高速冲击问题的模拟，结合弹性杆撞击、泰勒杆、碎片云、子弹入射靶板等算例表明了PCMM在模拟高速冲击问题方面的正确性及合理性。二是采用FEM-DEM弱耦合的方式建立了战斗部全时空域计算方法，实现了战斗部起爆及破片场飞散过程的快速模拟，具体地采用有限元实现战斗部起爆过程模拟，建立等效层模型实现破片速度继承，采用颗粒离散元实现带阻力颗粒飞行计算，最后通过不同构型概化战斗部的数值解和试验解对比分析验证了所提方法的正确性及合理性。

Keywords

连续-非连续单元法,颗粒计算方法,爆炸冲击,破片飞散

Speaker

朱心广

中国科学院力学研究所

Submission Author

朱心广中国科学院力学研究所

冯春中国科学院力学研究所

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