| Contract to the bomb, mine and other anti-warship weapons, the semi-armor-piercing anti-warship missile owns the characteristics of long range,large power and high hit ratio. the semi-armor-piercing can penetrate into cabins, and make huge attack to the ship and people.The article summarized the grillages damage laws through the numerical calculation,compiling an acoustic method of calculating bulkhead destroy,presenting a formula of quasi-static peak pressure, and studying the pall's motion law of under the quasi-static peak pressure.At first, the paper investigate the anti-warship weapons equivalent weight at home and abroad, and calculate the peak pressure at free field blast by the use of LS-DYNA. The numerical result is close to the result of formula. And then, the load and grillage damage under the attack of blast in cabin has been calculated with LS-DYNA. Through the calculation, the paper summarized the load and damage characteristics.Then, through the summarize of the theory of blast wave reflection, give the reason why the load under the attack of blast in cabin is bigger than the in free field. Combine with the geometric acoustic knowledge, comply a set of acoustic method of calculating bulkhead destroy and load. The method provide a set of ways of solve the collocation of wave, wave propagation, reflection and so on.Thirdly, combine the the acoustic method and grillage plastic deformation theory, the paper present a set of method to calculate the deformation and breach of bulkhead, and the range of damage. The paper discussed the energy change when change the wave line number,decided choose the n=100 as the parameter number.Forth, the paper get the formula of quasi-static peak pressure by the energy conservation principle,and realized get the accurate Q is the premise of the accurate quasi-static peak pressure. According to the inorganic chemistry,the paper deduced the calculate formula of specific heat Q. the formula compares with other formulas. |
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