Research On Impact Penetrating Mechanical Characteristics Of Flexible Probe For Lunar Exploration

As the closest planet to the earth,the moon has broad scientific exploration prospects and resource development and application value.In the current lunar exploration technology,the landing penetration detection technology has become one of the most research-based detection technologies due to its advantages of little disturbance to the lunar soil,conformity to the detection profile,and in-situ detection data.This subject is based on the detection of the lunar soil profile in China.For a new type of penetration detector with a flexible ruler as the penetration body,the impact penetration process is divided into three processes: impact loading,impact transmission and impact action.Decoupling modeling and analysis of each process is carried out to provide a theoretical basis for engineering goals such as improving device performance indicators and analyzing device penetration into the lunar soil profile.During the impact loading process,this paper establishes and analyzes the mechanical models of each working stage of the impact loading system,determines the measurement indicators and constraints,performs parameter optimization and simulation verification based on Abaqus;In the impact transfer process,based on the tangential bending mechanical characteristic model of the flexible ruler,the impact transfer mechanical model considering the bending instability of the flexible ruler was established,in order to propose the measurement index of the deformation resistance of the flexible ruler and the simulation verification based on Abaqus and improve the flexibility Analysis of the effect of configuration design on the deformation resistance of the ruler;In the process of impact action,this paper establishes the resistance model of impact action penetration head based on the bearing capacity theory,and modifies the model considering the volume displacement phenomenon,and solves and verifies it through experiments;Finally,based on the previous research conclusions,this paper analyzes the impact penetration ability of the flexible probe,and obtains the theoretical speculation of the penetration depth of the flexible probe and the theoretical estimation of the adaptability of the moon rock.