The 4th International Symposium on Mine Safety Science and Engineering (ISMSSE2018)

293 / 2018-05-01 21:51:43

Dynamic response and structural optimization for airtight blast door subjectd to gas explosion blast load: A numerical investigation with ALE and FEM-SPH algorithm

airtight blast door, dynamic response, gas explosion, blast load, nonlinear dynamics, rescue device

Mine occupational health and environmental safety > Explosion-proof

Airtight blast door, as one of the key components of a rescue device or a ventilating device in underground coal mine, which can not only guarantee the normal operation ventilation system, but also can prevent the propagation of shock wave and invasion of toxic gases. Therefore, high structural stability and safety is fundamental when designing a door. An airtight blast door was developed and optimized based on static analysis and topological optimization, and dynamic response analysis of the optimized airtight blast door subjected to gas explosion load was conducted using a novel approach proposed in this paper-the ALE and FEM-SPH algorithm. Results showed that the main component weight of this kind of door is 27.4 % smaller than the original one without reducing the blast and impact behavior, the maximum displacement and stress of the optimization door obtained by FEM-SPH contact algorithm (dynamic response) are much larger than those using static mechanical analysis. The FEM-SPH contact algorithm and typical optimization method as well as the example presented in this paper are helpful for the original design and optimization of other products. Some conducive suggestions were recommended based on the simulation results.