[Oral Presentation]基于DEM-MBD耦合的冲击式捣固装置对有砟道床作业机理研究

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

基于DEM-MBD耦合的冲击式捣固装置对有砟道床作业机理研究

ID：164 Submission ID：244 View Protection：ATTENDEE Updated Time：2024-04-10 17:23:10 Hits：474 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

目前人工捣固装置进行养护维修作业主要依赖现场工人的工程实践经验，缺乏相关理论研究。为研究有砟道床人工捣固装置作业工作机理，借助离散元素法（DEM）⁃多体动力学（MBD）耦合仿真理论，提出有砟道床人工捣固作业模拟方法，建立冲击式捣固装置⁃有砟道床耦合仿真模型，并在现场开展了人工捣固作业前后横向阻力试验，验证模型的可靠性。研究结果表明：人工捣固作业会使道床横向阻力降低 19.51%，道床横向稳定性减弱；捣入及振捣阶段对道床影响较大，颗粒平动分布区域呈“半圆弧状”，影响深度约至枕底的2/3区域，转动影响深度约在枕底的1/2处；撤镐阶段对道床扰动较小，有利于作业结束后道床的稳定；另外，捣固作业使颗粒间接触关系不断变化，逐步建立新的稳定传递关系，同时伴随着枕盒及砟肩处密实度的降低。

Keywords

有砟道床，人工捣固装置，离散元，多体动力学，细观运动，接触状态

Speaker

钱忠霞

北京交通大学土木建筑工程学院

Submission Author

钱忠霞北京交通大学土木建筑工程学院

肖宏北京交通大学土木建筑工程学院

迟义浩北京交通大学土木建筑工程学院

张智海北京交通大学土木建筑工程学院

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