Numerical Simulation on Different Blast Walls Resisting Air Shock Wave

By comparing the widely recognized empirical formula for calculating the air shock wave,it verified the feasibility and accuracy by using dynamic finite element software AUTODYN 2D to simulate the shock wave.The anti-shock wave capability of the four different blast walls with the same distance to the blasting source were calculated firstly.Then the average attenuating rate of peak overpressure of shock wave on every blast wall was calculated following the decrease of distance to blast source and their change trends was also analyzed.The results show that the average attenuating rate of peak overpressure of shock wave of the type of(b),(c) and(d) blast walls increases with the decrease of distance to blast source,and their anti-explosion effect are better.