[Oral Presentation]海冰作用下船舶结构弹塑性变形的DEM-FEM耦合模拟

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

海冰作用下船舶结构弹塑性变形的DEM-FEM耦合模拟

ID：103 Submission ID：29 View Protection：ATTENDEE Updated Time：2024-04-10 17:09:36 Hits：486 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

在极地冰区航行中，船舶结构与海冰的相互作用是一个复杂的力学过程，其中海冰破碎的多尺度特征和船舶结构在海冰作用下的非线性变形特性是数值模拟的挑战。采用离散元方法(DEM)和非线性有限元方法(FEM)分别对海冰和船舶结构进行数值建模，并发展了DEM-FEM双向耦合方法以精确描述可破碎海冰作用下船舶结构的非线性力学行为，此方法充分考虑了结构弹塑性变形对相互作用产生的影响。此外，通过海冰与加筋板的典型压缩试验验证了所发展耦合算法的合理性和准确性，并对比了可破碎海冰分别作用于弹塑性和刚性结构上的冰载荷。结果表明，作用于弹塑性结构的冰载荷更贴近实测结果，因此采用DEM-FEM耦合方法进行冰载荷以及结构响应计算更具合理性。在此基础上对“雪龙2”号破冰船的艏向破冰过程进行了数值模拟，并分析了破冰过程中船体外板结构在冰载荷作用下的位移响应和应力分布情况。

Keywords

DEM-FEM耦合方法,船体结构,结构弹塑性变形,冰载荷

Speaker

张昊一

大连理工大学

Submission Author

张昊一大连理工大学

刘璐大连理工大学

季顺迎大连理工大学

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