Structure Transient Response Analysis of Coal Mine Life-Saving Capsule under Blast Shock Condition

摘要

Targeting at insufficient data for simulated blast shock of life saving capsule in coal mine which affects its development and design so that structural transient response analysis optimization was performed to analyze strain-stress, shock-produced deformation and spring-back of the new protective crust with compound structure under shock wave. ADINA, a general-purpose FEA program, is chosen to emulate the dynamic response of the protective structure under blasting stress. The analysis results were compared with the dynamic response results of the single-layer protective crust. The result shows that steel defensive structure with aluminum foam buffer behind general steel has a good attenuation characteristic for peak pressure of blast wave. The composite structure with flexible material layer can protect the core of the lifesaving system better from the blast. The simulation experimental environment can be established and reference data can be provided for the design of a life-saving ball system by using numerical analysis methods.