Numerical Simulation Study On Explosion Composite Of Bimetal Composite Board

With the fast development of Chinese economy, the need of composite sheet from all kinds of industries is increasing. The stainless steel clad plate has several advantages such as its perfect corrosion resistance and it is cost-effective, so it will must be used into more industries in the future. Using explosive compound method to produce composite sheet has several characteristics such as easy production process, high strength of combination of composite sheet. At the same time, explosive compound method can not only produce corrosion resistance sheet, but also realize the combination of random two metals which is hard to normal welding. The combination topography of explosive compound interface is directly influence the combination and using performance. Usually, we think that the continuous and even sinusoidal waveform binding combination showing on composite interface is the signal of success. So the shape of wave on composite interface is always the hot spot of studying the explosive compound.On the basis of window of explosive compound theory, this paper starts the study of static and dynamic composite parameters of the composite sheet and draws up the Matlab calculation program which successfully draws the compound window of 304 composite sheet with corrosion resistance.On the basis of window of explosive compound theory, this paper using SPH and through the values simulative study of the explosive composite process of No.20 stainless steel, it successfully shows the mental jet phenomenon of explosive composite process again and gets continuous and even waveform of explosive composite interface. The process of forming wave in waving combination showing in value experiment is approximately the same with the description of Bahrani caved mechanism. It designs two groups of values experiments and finds that collision speed of compound plate, collision angle and length and height of wave in compound area is showing the distribution like the shape of "few".On the basis of the characteristics of the propagation of explosive shock underwater such as the speed is fast, the pressure peaks is high, this paper starts values simulative study to the explosive compound and still use 304 stainless steel/No.20 steel composite board as study objects to design a group of value experiment of valuable amounts of explosives. By extracting the iconic signs such as the collision speed on compound interface and collision pressure, we compare them with normal explosive compound and the result shows that when other conditions are the same, explosive compound underwater can reduce the amount of dynamic. At the same time, we study the influence of gap to the result of explosive compound. The result shows that there is a perfect gap in explosive compound, if it is less or more than the perfect gap, the collision speed will always less than the perfect gap. At the same time, to increase the utilization of dynamic, we put forward the processing method of duplex explosive compound underwater on the basis of explosive compound underwater. This method can not only use the characteristics of explosive compound underwater, it can also avoid dissipation of dynamic on the other side. This paper designs a group of value experiments of amount of dynamic, and the results shows that when the amount of composite boards after processing is the same, duplex explosive compound underwater can reduce the amount of dynamic sharply.This paper studies the reason of tearing in the end of explosive compound by analyzing normal end effect in industrial application of explosive compound and puts forward two methods including changing the amount of dynamic in end area in complex board and increase the length of complex board to eliminate the influence of end effect. Through value simulation we verify the explosive compound effect of two methods and the result shows that the two methods can control end effect effectively.