Highlights A numerical model is proposed to predict the ultimate uplift capacity of the anchoring rod of the anchoring devices. The geomaterial behavior and the ultimate uplift capacity under the microgravity environment are analyzed by DEM simulation. Calibration experiments calibrate the parameters of three typical geomaterials. The distribution of loaded particle forces in the geomaterials under various anchoring conditions is compared and analyzed. The error between the numerical model prediction results and the DEM simulation results is less than 5%.

    Abstract Due to the microgravity environment on the asteroid surface, the asteroid probe can not stay on the asteroid surface for a long time for in situ exploration. Therefore, an anchoring device is required to provide enough ultimate uplift capacity to hold the asteroid probe on the asteroid’s surface. In this work, based on the circular arc failure surface hypothesis, a numerical model is proposed to predict the ultimate uplift capacity of the anchor rod of the anchoring devices during the anchoring process. The discrete element method (DEM) simulation is adopted to calculate the ultimate uplift capacity and analyze the geomaterial behavior. To accurately simulate material properties, the parameters of three typical geomaterials are calibrated by the calibration tests. The anchoring experiment verifies the DEM simulation results, and the error between the anchoring experiment results and DEM simulation results is less than 14%. The distribution of loaded particle forces in the geomaterials under various anchoring angles(30°–60°) and the anchoring depths(20 mm–40 mm) in the simulation are compared and analyzed. Compared with the DEM simulation results, the ultimate uplift capacity’s numerical model prediction results have an error of 5%. This work provides a new approach to predict the ultimate uplift capacity of the anchor rod of the anchoring devices during the asteroid exploration process.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Investigation on the ultimate uplift capacity for asteroid exploration in drilling anchoring process: Numerical modelling and DEM simulation


    Contributors:
    Li, Mengxue (author) / Tang, Dewei (author) / Quan, Qiquan (author) / Zhao, Zhijun (author) / Guo, Fan (author) / Meng, Linzhi (author) / Deng, Zongquan (author)

    Published in:

    Advances in Space Research ; 68 , 7 ; 3026-3036


    Publication date :

    2021-05-20


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Ultimate Uplift Capacity Relation of Plate Anchor Using Model Testing

    Hong, Seok-Woo / Geum, Dong-Heon / Seo, Minsu | Springer Verlag | 2022


    Development of an Anchoring System for the Soft Asteroid Landing Exploration

    Zhijun Zhao / Shuang Wang / Delun Li et al. | DOAJ | 2019

    Free access

    An asteroid anchoring method based on cross-drilling geometric force closure of ultrasonic drill

    Wang, Tongzhao / Quan, Qiquan / Li, Mengxue et al. | Elsevier | 2020


    Anchoring device of asteroid mining sampling machine

    HUANG JUN | European Patent Office | 2021

    Free access