By using LS-DYNA finite element hydrocode,the effects of liner\'s cone angel,wall thickness and wall thickness variation on the penetrator formation of shaped charge conical liners were investigated under direct and inverse direction annular initiations.

The basic priciple and experimental results of ring initiation are expounded.

Because of its credibility,safety,briefness,thrift,and easy operation,the circular ignition of blasting circuit of NONEL tube detonators is designed.

Reverse initiation are different with normal initiation in the collapse process and jet velocity.

Desensitive Ammunition and New Techniques of Safe Reliable Initiation;

Study on Short-duration Pulse Initiation Sensitivity of ANBDF;

Cloud initiation and detonation are dependent on delay time of ignition,initi-ating energy,detonating limit,initiating method and position.

Among all the factors affecting the performance of EFP s shaping, method of ignition is the most important one.

In this article, copper plate impression experiments of explosive charges with the same article number, the same charge density, different charge calibres and different charge heights have been carried out under the condition of two point ignition at the same time at the upside end of the charge.

It has been found that three of the reaction rate equation coefficients,namely the ignition factor I,the burning growth factor G and the coupling factor X,can each find their correspondence with the respective features of the shock initiation process.