Energy-splitting strong impact protection structure and protection method based on energy-gathering effect

Abstract

The invention discloses an energy shunting strong impact protection structure based on an energy gathering effect and a protection method. The protection structure comprises a front buffer layer, a shunting layer and a back buffer layer from outside to inside; the shunting layer includes a first support half ring, a second support half ring and a shunting layer center column; the first support half ring and the second support half ring are symmetrically arranged on two sides of the shunting layer center column, and form a support ring integer; a first cavity structure is formed between the first support half ring and the shunting layer center column; a second cavity structure is formed between the second support half ring and the shunting layer center column; the first cavity structure and the second cavity structure form an annular cavity structure; the front buffer layer is fixedly connected with the shunting layer; the shunting layer is fixedly connected with the back buffer layer; and the center area on the inner side of the back buffer layer is a core protection area. The shunting protection structure has the characteristics of high upper limit of impact resistance and capability of largely reducing the impact wave pressure.

Description

technical field [0001] The invention relates to the field of impact protection, in particular to an energy-splitting strong impact protection structure and protection method based on energy gathering effect. Background technique [0002] High-efficiency protective structures against strong external loads such as strong shock waves, explosive loads, and high-speed impacts have important application value in national defense fortifications and important civilian facilities. In this context, multi-layer composite target protection structures have emerged, typically such as "sandwiches Compound targets of the formula, such as figure 1 As shown, the composite target includes a buffer layer A20, a buffer layer B30 and a buffer layer C40, and the buffer layer A20, buffer layer B30 and buffer layer C40 are sequentially composited from outside to inside. A layer of material with smaller wave impedance is added to the two layers of material with larger wave impedance to match the sho...

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Problems solved by technology

However, this kind of protection structure has the problem of insufficient upper limit of protection capacity, and it may lead to protection failure under the condition of large impact load, such as figure 2 The shock wave pressure curve detected by this composite target in the buffer layer B30 is provided, and it can be concluded that the shock wave peak pressure detected by this composite target in the buffer layer B30 is greater than 15Gpa

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