penetration相关论文
利用纳秒激光对铝合金和镁合金薄板进行了中心搭接焊试验, 分析了纳秒激光工艺参数对铝/镁焊缝成形及力学性能的影响。研究结果表......
The flowability of a root canal sealer is clinically important because it improves the penetration of the sealer into th......
This paper involves a series of destructive full-scale load tests on long bored piles instrumented with strain gauges al......
This paper describes an orthogonal experiment on the effect of water/cement ratio,water consumption per cubic meter,curi......
The hydro-hammer sampler is a new type of sampler compared with traditional ones. An important part of this new offshore......
The patternless casting manufacturing (PCM) technique, which adopts a new concept of double scanning method, combines th......
Deeply penetrated welds can be produced with high-power-density lasers.Thus the factors affecting laser weld penetration......
Impact velocity (v0), target strength (fc) and target thickness (hc) are important factors affecting opening damage ((D)......
The elliptical cross-section ogive-nose projectile (ECOP) has recently attracted attention because it is well suited to ......
摘 要：如何进行小学语文作文的教学？课文，就是一篇优秀的文章，是作文的最好蓝本。 关键词：小学语文；阅读教学；渗透；作文教育 作为语......
High-strength quenched and tempered (HSQT) steels have been widely used in structural applications where light weight is......
In laser-arc double-sided welding, the spectral characteristics of the arc plasma are calculated and analyzed by spectro......
【Abstract】at present stage， along with the penetration of the content of new into every stage of the teaching link came......
This article was to study the potential resistance mechanism of three different wheat varieties (Ww2730, Xiaoyan 22 and ......
Biocompatible designed micromotor has attracted more and more concs in the field of biomedicine due to their self-propul......
Ceramic balls represent a new type of damaging element, and studies on their damaging power of composite armor are requi......
Shaped charge penetration into high-and ultrahigh-strength Steel-Fiber reactive powder concrete targ
Experiments on shaped charge penetration into high and ultrahigh strength steel-fiber reactive powder concrete (RPC) tar......
为提高高超声速变质心再入弹头的突防能力,设计了一种基于主动螺旋机动的突防弹道。在建立变质心弹头动力学模型和弹目运动学模型......
西汉时期的西域都护府治所乌磊城与“西域三十六国”之一的且末城,在历史文献中曾多次出现。然而由于尚未发现合乎描述的古城或者......
In areas with poor ambient air quality, indoor particle concentrations can be significantly affected by particulate matt......
In order to study and apply the penetration performance of jetting penetrator charge at long stand-off distance, three j......
Consistent constitutive modeling of metallic target penetration using empirical, analytical, and num
Historically, there has been little correlation between the material properties used in(1) empirical formulae,(2) analyt......
Effective depth-of-penetration range due to hardness variation for different lots of nominally ident
The effect of small variations of target hardness on the depth of penetration for nominally identical target material ha......
In order to study the performance of ceramic composite projectile penetrating into ceramic composite target,the contrast......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Ballistic model for the prediction of penetration depth and residual velocity in adobe: A new interp
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
为设计助推钻地弹选择合适的助推方案,采用LS-DYNA程序进行了三维数值模拟研究。通过将动能弹侵彻混凝土数值模拟的结果与试验数据......
采用特定孔隙结构泡沫铝垫片以冲击隔离方式实现引信在前冲过载下的缓冲保护,基于数值仿真方法开展了缓冲有效性分析。建立某型火......
考虑不同的沉箱长径比和负压,通过一系列模型试验研究沉箱在砂土地基中的负压下沉行为,重点分析负压在地基土中的传递扩散问题,并......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
The max collision force of ship-bridge collision is one of the most important references for bridge design. By means of ......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Effects of TiO2 or ZrO2 addition on corrosion resistance of periclase-spinel refractories to copper matte at different t......
利用ANSYS/LS-DYNA有限元分析软件对聚能射孔弹的射流形成、侵彻钢靶过程进行了数值仿真研究,揭示了射流侵彻过程中发生的一些物理......
激光深熔焊熔池-小孔包含丰富的反映熔深的信息。本文建立了基于视觉的熔池小孔同轴检测系统,拍摄了不同焊接速度下熔池小孔的清晰......
Feature Extraction and Dimensionality Reduction of Arc Sound under Typical Penetration Status in Met
Arc sound is well known as the potential and available resource for monitoring and controlling of the weld penetration s......
A simulation of stratification and penetration was performed over a range of structural parameters that included screen ......
介质渗透是固井水泥发生各种腐蚀的必要条件,也是套管外壁发生腐蚀的首要条件.模拟固井水泥的实际应用环境,将套管钢嵌入G级固井水......
The mechanism of chloride ion penetration in high performance concrete was analyzed. The experimental results indicate t......
The disturbance of flat and V-shaped sandwich reactive armor configurations to shaped-charge jet is studied by a numeric......
人教版的高中生物教材中涉及到了系统论思想，教师应该在教生物学知识的同时渗透这种思想，这样有利于学生从生物学课程的学习中得到科......
Analytical solutions for finite cylindrical dynamic cavity expansion in compressible elastic-plastic
Analytical solutions for the dynamic cylindrical cavity expansion in a com-pressible elastic-plastic cylinder with a fin......
Based on the cylindrical cavity expansion theory,a plastic-damage-elastic model is proposed for the penetration problem ......
Mass loss should be considered while calculating the penetration depth of concrete by eroding long-rod projectiles of hi......
Shoot efficiency is one of the most important evaluation indexes of the operation efficiency of weapon system. In this p......
针对钨合金球侵彻陶瓷/铝复合靶的实验结果,对钨合金球侵彻陶瓷复合靶的作用机理进行了简单分析;从能量的角度对背板变形进行分析,......
介绍了LS-DYNA程序和ALE方法的计算原理,分析了钢筋混凝土侵彻的目标特性,选用D材料模型,使用ALE方法对钢筋混凝土的侵彻进行数值......
Long-rod penetration in a wide range of velocity means that the initial impact velocity varies in a range from tens of m......
