High explosives (HE) with desirable safety and detonation performances are widely used in weapon system and aerospace engineering. Multipoint initiation is utilized to initiate TATB and thus create overdriven state. High‐pressure areas of colliding shock waves are observed by measuring steel dent value and the whole processes, involving multiple wave interactions and overdriven detonation formation, are reproduced using LS‐DYNA3D program. Results indicate that the quadruple point is at the center where four shock waves collide, and the double point is between two initiation points where two shock waves collide. When the height of donor explosive exceeds 5 mm, the retardation time of the quadruple point compared to the double point and the individual point are 180 ns and 260 ns, respectively. In addition, overdriven state may disappear when the height of UF‐TATB exceeds 9 mm, and the delay effect is negligible for initiating PBX‐9502 when the simultaneity of slapper detonators is within 100 ns.

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The talent training evaluation model not only helps to evaluate the talent itself but also provides feedback on the content of the talent training evaluation. Therefore, this paper establishes an efficient and intelligent talent training evaluation model for accounting professionals based on the logarithmic cycle power law model. The main content of talent training evaluation is set as general knowledge skills, professional thinking, and values. The log-periodic power-law model and the least squares method are combined to reduce the dimensionality of the nonlinear parameters of the judging content and to quantify the judging of intelligent accounting professional talent training in universities, which is convenient for the calculation of linear functions. With the help of log-periodic power-law oscillation to prove that talent training is changing in a cyclical pattern, the feasibility of its prediction is demonstrated. The study shows that the talent cultivation judgment model constructed based on the log-periodic power-law model is very accurate, especially in talent cultivation value judgment prediction. The model achieves zero error in the prediction of some data, and the maximum error between prediction and actual is only 6%. In the judgment of general knowledge and skill cultivation, the maximum error between the prediction and the actual score of the model is no more than 2 points. This shows that the talent development evaluation model based on the log-periodic power law model can make accurate predictions of talent development evaluation.

In order to study the effect of series initiation and parallel initiation on multi-point synchronous initiation of EFI (Exploding Foil Initiator, EFI), two-point series and two-point parallel electric explosion, three-point series and three-point parallel electric explosion of exploding foil were tested in this paper. The electrical explosion parameters for synchronous initiation of exploding foil two-point in series and two-point in parallel were tested also. The electric explosion parameters of exploding foil varies with the initiation voltage were analyzed. The effects of series initiation and parallel initiation on the performance of exploding foil multi-point synchronous initiation were obtained. The initiation sensitivity test of three-point series EFI and four-point hybrid EFI was carried out. The experimental results agree well with the analysis law. The research results show that series initiation is beneficial to improve the consistency of initiation conditions at each point on the condition of exploding foil multi-point initiation, is beneficial to improve the synchronization of multi-point initiation. But it’s adverse to the full release of system energy when the number of series initiation points is large. Parallel initiation is beneficial to improve the system energy utilization. But the explosion synchronization relatively poor when system energy is low. The explosion synchronization of exploding foil will be better when system energy increase. It’s benefits to increase the consistency of initiation conditions at each point of exploding foil, benefit to increase the system energy utilization and reduce system firing energy that adopt reasonable combination of series and parallel, when the number of initiation point is large and system energy is sufficient.