Study On Spherical Tensegrity Landing Buffer Device

With the progress and development of science and technology in today’s world,the requirements of landing buffer devices are becoming more and more perfect for the exploration of unknown areas and the supply of emergency materials in disaster areas.The spherical tensegrity structure is simply composed of rigid bar and flexible cable,with light weight,large bearing space and no need of cushioning materials.This paper conducts a detailed study on the selection,mathematical configuration,landing kinematics analysis,landing attitude angle division,landing simulation analysis with or without load and landing impact force calculation of spherical tensioning buffer device.The detailed contents are as follows:Firstly,a variety of spherical tensioning structures,configurations and load-bearing capacities were analyzed by static load test,and the basic configuration of the landing buffer device was selected based on the requirements of the folding performance of the buffer device,and the mathematical modeling analysis was carried out on the relationship between the rodcable structure and the node.Then,according to the stress changes of each member of the sixbar spherical tensioned integral structure at the moment of landing,the kinematics analysis of the process of landing,compression and recovery of the structure is carried out,and the kinematics law of the falling process of the structure is obtained.Then the effects of different positions on the internal space of the structure at the specified height under the condition of no load are studied.The structural pose transformation can be realized by the method of coordinate transformation in the structure modeling.The Angle of all possible landing positions of the structure at the moment of contact with the ground is defined.The internal space of the structure is defined and the changes of the structure to the internal space caused by the unloaded landing in different positions are calculated.Next,the influence of relative parameter changes on the internal space changes of the structure under the condition of load is compared with that under the condition of no load.The connection mode of load and structure is given and the optimal connection scheme is determined.Then the size of the radius of the equivalent ball is analyzed at the moment when the structure lands.Finally,the prototype of the spherical tensegrity landing buffer device is built and the relevant landing experiments are verified.Structure of physical prototype structures,and controlled by multiple sets of prototype landing experiments to verify the structure of the buffer size changes on feasibility test,link buffering effect,component parameter change on the effects of the structure of the buffer records the experiment process and the related data collected from the corresponding landing experiment conclusion.