摘要
采用分段处理多变指数的方法研究了火炮后坐冲击作用下,复进机内密闭高压气体在火炮后坐瞬变过程中的热力学特性及复进机的实际工作性能。指出由于受后坐冲击作用,火炮复进机内气体的实际特性不同于普通气动设备,其气体多变指数的取值在不同子过程中并非始终局限于等温过程与绝热过程之间,而存在大于绝热指数的情况,这一特性会对复进机实际工作性能产生较大影响,实验结果证明了理论分析结论的合理性。与以往处理方法相比,综合考虑了内摩擦与传热作用对复进机气体系统的影响。该结论为复进机的合理设计与分析提供了理论依据。
The whole working process of an artillery counter-recoil mechanism was divided into four different stages. By this way, the high-pressure gas thermodynamic features in the counter-recoil mechanism under the action of recoil impulsive and the actual performances of this mechanism were studied. Because of the recoil impulsive, the thermodynamic features of the gas in the counter-recoil mechanism would deviate from ordinary pneumatic mechanisms and its ploytropic processes were not always between the isothermal process and the adiabatic process. This would affect the performance of the counter-recoil mechanism. The experimentl results were coincident with theoretical analyses. Since the effects of internal friction and heat transfer were taken into account, the analysis results would provide reasonable theoretical basis for design of an artillery counter-recoil mechanism.
出处
《振动与冲击》
EI
CSCD
北大核心
2009年第4期142-144,148,共4页
Journal of Vibration and Shock
关键词
复进机
高压气体
冲击作用
多变指数
counter-recoil mechanism
high-pressure gas
impulsive action
ploytropic exponent
