比彻

The object of projectile design is analyzed, and the layer-TOPSIS method is provided for the evaluation of total effectiveness by taking the layer concept into the TOPSIS method. In the calculation of object weights, the grade calculation method is suggested, which has less dependence on the subjectivity of decision-maker and can take account of both sensitivity and allowableness of objects, the geometric-arithmetic method is provided for grade weight calculation and methods for sensitive weight and allowable weight are given. Of modes in system analyzing, the penetration model of target with spherical-fragment is carried out based on the theory of Dynamic Spherical Cavity Expansion, and it is a supplement of the models for calculation the damage of the fragmentation warhead to target.

对弹丸设计进行了目标分析；通过在TOPSIS方法中引入层次结构的概念，提出了适用于弹丸总体效能评价的层次TOPSIS评价方法；在指标权重计算中，提出了对决策者主观依赖较少的能反映指标的敏感性和相容性的分级权重计算方法；在分级权重计算中，分别给出了等比-等差权值计算方法和敏感-相容权值计算方法；在系统分析的模型中，对破片战斗部的威力计算中的模型进行了补充，在空穴膨胀理论的基础上提出了球形破片侵彻有限厚靶板的侵彻计算模型。

She stayed for two months at the Castilian court.

埃利诺在卡斯提宫廷住留了两个月。3月下旬，埃利诺和她的外孙女布兰彻才翻越比利牛斯山踏上归程。

In Britain, public schools are the very oldest and most expensive schools like Eton, Harrow, Rugby, Winchester and Cheltenham Ladies College.

在英国，公立学校是那些非常古老和最昂贵的学校，比如伊顿、哈罗、拉格比、温彻斯特和彻腾姆女子学院。

Ceremony of the Dome. This British fiasco was worse than any of them, and even at only

彻尾的失败，比我看过的那些演出中的任何一次都更糟糕，以至于演出虽然只有8分钟，都让人觉得

Battery technology still relies on chemical reactions taking place inside those innocent-looking slabs of plastic, and improvements happen, according to Isidor Buchmann, founder and chief executive of Canadian battery-charger maker Cadex Electronics Inc., far more slowly than improvements in, for example, chip speed.

电池技术的进步依然有赖于电池内部化学反应方式的改进，而据加拿大充电器生产商 Cadex Electronics Inc。的创办人兼首席执行长伊西多尔·布彻曼说，这一改进速度比芯片运行速度等方面的进展要慢得多。

The result indicates; that the antiˉpenetration c apability of the nubbly corundum concrete target is the best. The average penetration depth of nubbly corundum concrete is 46.9% less than that of concrete; the antiˉpenetraˉ tion resistance capability of the steelˉfiber concrete is between t hat of nubbly corundum concrete and concrete.

研究表明，刚玉块石混凝土的抗侵彻性能最优，弹丸平均侵彻深度比普通混凝土减小46.9%，钢纤维混凝土的抗侵彻性能介于上述两者之间

The ballistic experiments of tungsten long-rods penetrating composite laminates and steel target are investigated. The experimental results show that the penetration performance of torqued long-rod is stronger than that of non-torqued rod.

本文首先进行了钨合金杆弹侵彻有限厚度的钢靶和复合靶的侵彻实验，实验结果表明预扭转钨合金杆弹侵彻贯穿能力比未扭转钨合金杆弹要高。

The results also show that Kevlar composite laminates performs stronger anti-penetration ability than steel targets, and the torqued rods have stronger penetration performance than non-torqued rods.

计算结果表明Kevlar增强纤维复合材料由于其比强度高而具有更好的抗侵彻贯穿性能，预扭转钨合金杆弹由于侵彻过程中弹头较未扭转弹更易于锐化，即出现所谓的自锐现象，因而具有更高的侵彻能力。

For the problem of the ratio of inner to outer diameter of long tube, according to the "residual core" in the target plays an important role in DOP of long tube penetrator, the analytical model of long tube pentration in semi-infinite homogeneous steel target is established and calculated to devide three kinds of different scopes, the rule of varied by the ratio of inner to outer diameter is analyzed. The patterns of penetration of the yawed tubular against a normal homogeneous semi-infinite target is established, the size and direction of "residual core" is analyzed, under the different impact yawed, the regularity of variations in the yawed of the tube and depth of the penetrateion is described during the penetrateion against the plate.

二是对于长管体的不同内外径比，依据长管体时形成的中间&靶芯&是其侵彻机理不同于长杆体的重要因素，分三种情况建立了长管体对半无限均质靶板的简化理论模型，并进行了分析，得出了穿深随内外径比变化的规律；描述了带攻角长管体垂直侵彻半无限厚靶的物理图像，分析了&靶芯&力的大小和方向，建立了侵彻简化模型，给出了在不同的初始攻角条件下，管体在侵彻过程中攻角和穿深的变化规律。

The results show that:(1) The penetration resistance of functionally graded layered armour made of metal Matrix Composites is better than that of the Aluminum plate;(2) The penetration resistance of the functionally graded layered armour whichlay_up is 0%/57%/0%/26%/0%/12%/0% is the best;(3) The resistance penetration of the the functionally graded layered armour can be greately promoted through optimizing the lay_up and volume fraction of the reinforced particle;(4) The functionally graded armour in which the particles distribute continuous has better behavior of resistance penetration when the volume fraction of the reinforcements are constant;(5) The higher volume fraction of the reinforcements at the surface of FGM and the more non-homogeneous the reinforcements distribution, the higher thesurface Youngs Modulus and the flow stress are;(6) The behavior of penetration resistance of the functionally graded armour in which the particles distribute continuously is better than that of homogeneous steel plate;(7) The functionally graded armour provedes a important approach for the optimization and design of the resistance penetration;(8) The numerical results of simulation of the bird striking the aircraft structureshow that the finite element model of the balance leg is effective;(9) The numerical results show that the structure internal force is relative largewhen the bird strikes the top of the balance leg;(10) The process of the birdstrike is thaf.after the bird penetrting through the front skin of the balance leg and striking the front beam,the bird is broken up in three parts.

经过本文所进行的数值模拟后我们发现：(1)在层状梯度装甲板的抗侵彻过程中层状功能梯度板比铝板的抗侵彻性能好；(2)在层状梯度装甲板的抗侵彻过程中铺层顺序为0%/57%/0%/26%/0%/12%/0%的功能梯度装甲板的抗侵彻性能最好；(3)通过优化组合层状梯度板的铺层顺序以及增强颗粒的含量可以大大改善梯度板的抗侵彻性能；(4)当SiC颗粒体积含量一定时，增强颗粒连续分布的功能梯度板表现出了优越的抗侵彻性能；(5)增强颗粒连续分布的功能梯度板表面SiC颗粒体积含量越高，分布越不均匀，表面的弹性模量就越高，屈服应力就越高；畜此工业大学硕士研究生学位论丈(6)增强颗粒连续分布的功能梯度装甲板比匀质钢板表现出良好的抗侵彻性能；(7)功能梯度装甲板为整个抗侵彻性的优化设计提供了重要的途径。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。