[Oral Presentation]着陆器足垫冲击月壤的SPH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

着陆器足垫冲击月壤的SPH模拟

ID：141 Submission ID：101 View Protection：ATTENDEE Updated Time：2024-04-10 17:18:54 Hits：408 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

着陆器在着陆过程中会受到巨大的冲击力，严重影响着陆安全。为了研究着陆过程的动力响应，本文采用光滑粒子动力学（SPH）模型对简化着陆器足垫垂直冲击月壤的过程进行了数值模拟研究，其中采用Drucker-Prager弹塑性本构模型来描述月壤的力学行为。分析了着陆速度和足垫质量对着陆过程的影响，将轴向力、足垫刺入深度的模拟结果与理论计算结果进行了对比，模拟结果与理论计算结果吻合良好。研究结果表明着陆过程中足垫的能量间歇性释放，足垫在各阶段的运动相似，轴向力、最大刺入深度与着陆速度和质量线性相关，足垫的能量耗散效率受着陆速度影响，足垫质量对冲击响应时间有较大的影响。本文发展的SPH模型能够适用于刚体结构和月球土壤大变形破坏的耦合相互作用，较好地预测着陆过程，并给出结构所受载荷，为工程设计提供参考。

Keywords

SPH模型，着陆器足垫，垂直冲击，月壤

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