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爆炸压接的金属间的界面呈波状,但波形成的机理尚未充分地研究。有关压接参数的变化对波状界面波长的影响已采用半圆柱法和角度法进行了实验研究,并试图解释波形成的机理。对波长具有直接影响的参数是碰撞角和飞板厚度。在临界角以内,波长随着碰撞角增大而增大,超过临界角则波消失。当碰撞角相同时波长随飞板厚度增加而增大。根据对界面附近金属流动性质的详细研究表明,在波界面上的流动图形与具有卡门涡街(Karman Vortex Street)的流体的流动图形相类似。因此,本文作者得出了波的形成应该归因于在碰撞点后面产生涡街的结论。作者还力图估算出波长,并得出波长λ与碰撞角r和飞板厚度h之间的函数关系式λ=(A/2C)h·(1-cosr),式中A/C为常数。用该方程式计算的λ值与测量值接近。由不同金属形成的压接界面上发现了与规则正弦波的偏离,这种偏离和两种金属的密度比紧密相关。
The interface between the explosive and crimped metal is wavy, but the mechanism of wave formation has not been fully studied. The influence of the change of crimping parameters on the wavelength of the wavy interface has been experimentally studied by the semi-cylinder method and the angle method, and an attempt is made to explain the mechanism of the wave formation. The parameters that have a direct effect on the wavelength are the impact angle and the thickness of the fly. Within the critical angle, the wavelength increases with the collision angle increases, beyond the critical angle the wave disappears. When the collision angle is the same, the wavelength increases with the thickness of the flight. Detailed studies of the metal flow properties near the interface show that the flow pattern at the wave interface is similar to the flow pattern of a fluid with Karman Vortex Street. Therefore, the authors conclude that the formation of waves should be attributed to the generation of vortex streets behind the collision point. The author also tries to estimate the wavelength and obtains the function λ = (A / 2C) h · (1-cosr) between the wavelength λ and the collision angle r and the thickness h of the flying plate, where A / C is a constant. The value of λ calculated using this equation approximates the measured value. Deviations from the regular sine wave were found on the crimp interface formed by dissimilar metals, which is closely related to the density ratio of the two metals.