红军西征战役中民族宗教工作述略

从1936年5月下旬至7月下旬,由红一方面军主力组成的西方野战军,在司令员兼政治委员彭德怀的指挥下,按照党中央和中央军委的周密部署,进行了西征战役,对坚持反共的宁夏军阀马鸿逵、马鸿宾部予以重击,占领了环县、定边、盐池、豫旺等4座县城,开辟了纵横各400里的陕甘宁新根据地.     

使用多Agent模型求解N－难题的新方法

借鉴多Ａｇｅｎｔ模型思想给出了求解Ｎ－难题的新方法。将Ｎ－难题分成多个Ａｇｅｎｔ,赋予每个Ａｇｅｎｔ以算法,利用Ａｇｅｎｔ之间的协作和交互有效地进行问题求解。该方法将前人的指数时空复杂度降为多项式时空复杂度,实际实现结果表明了该方法可行、高效。     

铁磁材料裂纹漏磁信号的定量检测

针对无损探伤难于实现定量检测的问题,探讨了基于模式识别进行铁磁材料裂纹漏磁信号定量分析的原理和方法,通过在标准试件上的大量实验及在具有自然裂纹的工件上实际检测,取得了满意效果。     

一次性化学电池动态输出特性光电耦合测量法

提出了装备用一次性化学电池动态输出特性的光电耦合测量法。该方法采用独立电源供电,工作安全可靠,系统标定和数据采集、处理及结果输出等均由计算机控制完成,具有良好的操作环境,并且可在电动高旋机上使用,也可以用于对各种电压信号远距离遥测。     

硅整流无刷发电机供电系统动态性能的研究

分析了坦克的供电系统中采用硅整流无刷发电机时的工作特点,建立了这种系统的数学模型,举例说明了计算方法,并在文章的最后进行了评价.     

确定初级分布式战术C~3I系统体系结构的方法

集中说明了虚拟技术在系统建模、计算机系统以及组网连接上的应用,重点探讨了在虚拟技术基础上构建初级分布式战术Ｃ３Ｉ系统体系结构的原理和方法。是文献〔１〕的续文     

中锰铸钢坦克履带板连接筋的喷丸强化处理

针对新研制的中锰铸钢坦克履带板装车考核中的特点,提出了对连接筋实施喷丸强化处理的预强化方案.分析了喷丸强化层的组织和硬化特性;还通过连接筋的3点弯曲疲劳试验,探讨了喷丸强化对连接筋疲劳裂纹形成的影响.研究认为,对中锰铸钢坦克履带板连接筋进行喷丸强化预处理,是提高其整体使用寿命的重要途径.     

柴油油滴蒸发和燃烧过程的理论计算

提出了柴油油滴蒸发和燃烧过程理论计算方法.对油滴蒸发考虑了不定常蒸发和定常蒸发2个阶段,提出了一个求解蒸发时,油滴直径瞬时变化的代数方程式.对一台直喷式柴油机进行了实例计算,计算得到的瞬时燃烧放热率和气缸压力,与试验值符合很好.     

Theoretical and numerical simulation study on jet formation and penetration of different liner structures driven by electromagnetic pressure

The use of a shaped liner driven by electromagnetic force is a new means of forming jets. To study the mechanism of jet formation driven by electromagnetic force, we considered the current skin effect and the characteristics of electromagnetic loading and established a coupling model of"Electric—Magnetic—Force"and the theoretical model of jet formation under electromagnetic force. The jet formation and penetration of conical and trumpet liners have been calculated. Then, a numerical simulation of liner collapse under electromagnetic force, jet generation, and the stretching motion were performed using an ANSYS multiphysics processor. The calculated jet velocity, jet shape, and depth of penetration were consistent with the experimental results, with a relative error of less than 10％. In addition, we calculated the jet formation of different curvature trumpet liners driven by the same loading condition and ob-tained the influence rule of the curvature of the liner on jet formation. Results show that the theoretical model and the ANSYS multiphysics numerical method can effectively calculate the jet formation of liners driven by electromagnetic force, and in a certain range, the greater the curvature of the liner is, the greater the jet velocity is.     

An interface shear damage model of chromium coating/steel substrate under thermal erosion load

The Cr-plated coating inside a gun barrel can effectively improve the barrel's erosion resistance and thus increase the service life.However,due to the cyclic thermal load caused by high-temperature gun-powder,micro-element damage tends to occur within the Cr coating/steel substrate interface,leading to a gradual deterioration in macro-mechanical properties for the material in the related region.In order to mimic this cyclic thermal load and,thereby,study the thermal erosion behavior of the Cr coating on the barrel's inner wall,a laser emitter is utilized in the current study.With the help of in-situ tensile test and finite element simulation results,a shear stress distribution law of the Cr coating/steel substrate and a change law of the interface ultimate shear strength are identified.Studies have shown that the Cr coating/steel substrate interface's ultimate shear strength has a significant weakening effect due to increasing temperature.In this study,the interfacial ultimate shear strength decreases from 2.57 GPa(no erosion)to 1.02 GPa(laser power is 160 W).The data from this experiment is employed to establish a Cr coating/steel substrate interface shear damage model.And this model is used to predict the flaking process of Cr coating by finite element method.The simulation results show that the increase of coating crack spacing and coating thickness will increase the service life of gun barrel.