Study on structural design and energy absorption characteristics of protective devices under the super-large impact load
WEI Tieping
KOU Chao
LIN Shuo
LIN Zupeng
ZENG Shoujin
GUO Jinquan
Abstract：A set of anti-impact protection device was designed for the test fracture accident of 30 MN tension sensor calibration device.Firstly,based on the kinematic theory,the kinematic model of each component in the fracture process of test fixture was established.Then,different protective device structures at three impact locations were designed.Finally,the finite element models of three buffer structures were established and verified,calculated and optimized.The results show that the egg-box structure protection device at the top plate of the upper reaction rack and the upper ball joints can effectively solve the problems of small protection space and large impact value.The whole device dissipates 59.5%impact kinetic energy of the upper reaction rack,60.7%impact kinetic energy of the lower reaction rack and 100%impact kinetic energy of the lower ball joints.After the improvement,the initial peak load of the protective device at the lower ball joints is reduced by 62.7%.
Keywords：Fracture impactSuper-large force value standard machineProtective deviceEgg-box structureFinite element simulation
Publication Date：2025-10-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：10( 86-95 )