Numerical simulations on steel-concrete blast chamber under the internal explosive load

作者：Cai Qing Yu^*; Zeng Xin Wu; Hu Yong Le

来源：Journal of National University of Defense Technology, 2003, 25(3): 28-32.

• Axisymmetric
• Blast chambers
• Blast waves
• Dynamic finite element method
• Explosive loads
• Liner structure
• Low and high frequencies
• Numerical results
• Space time distribution
• Steel liner
• Steel-concrete
• Stress and strain
• Stress wave

The dynamic finite element method was applied to simulate the explosive flow field of an axisymmetric cylindric blast chamber with an ellipsoid cap, the stress and strain responses of the steel-concrete part were analyzed. The numerical simulation results show that the major low and high frequency of stress wave of steel liner is generated by reduplicate reflection of the blast wave on steel liner and intrinsic vibration of liner structure, and that the twice reflection of the blast wave on cap part of the chamber is important, thereby the space-time distribution of plasticity and damage responses of concrete have been fundamentally affected. The numerical results are in good agreement with experimental results.

• 出版日期2003
• 单位浙江大学