“瓦良格”号总设计师：我相信中国人的才智

“但‘辽宁舰’并不是普通意义上的训练舰．它可以称得上是一个史无前例的训练场,‘辽宁舰’的历史使命是为中国后续的航母国产化提供必要的理论和技术支持。从这点上看,中国政府的确是富有远见的。”     

Evaluation of effectiveness of polymer coatings in reducing blast-induced deformation of steel plates

Incorporating elastomers such as polymers in protective structures to withstand high energetic dynamic loads, has gained significant interest. The main objective of this study is to investigate the influence of a Polyurea coating towards the blast-induced response in steel plates. As such, Polyurea coated steel plates were tested under near-field blast loads, produced by the detonation of 1 kg of spherical nitromethane charges, at a standoff distance of 150 mm. Mild steel (XLERPLATE 350) and high-strength steel (BIS80) plates with thicknesses of 10 mm were Polyurea coated with thicknesses of 6 mm and 12 mm on either the front (facing the charge) or the back face. The deformation profiles were measured using 3D scanning. Numerical simulations were performed using the non-linear finite element code LS-DYNA. The strain-dependent behaviour of the steel and Polyurea were represented by Johnson-cook and Money-Rivlin constitutive models, respectively. The numerical models were validated by comparing the plate deflection results obtained from the experiments and were then used in the subsequent parametric study to investigate the optimum thickness of the Polyurea coating. The results indicate that back face coating contributes towards an approximately 20% reduction in the residual deformation as well as the absence of melting of the Polyurea layer, while the front-face coating can be used a means of providing additional standoff distance to the steel plates.     

2011年度美国参谋长联席会议主席指南

美国参谋长联席会议主席指南是指导联合参谋部工作和联合部队建设的年度文件.2011年度指南提出的优先任务与战略目标有3个:在大中东和中南亚捍卫美国的重要国家利益,改善部队的健康问题,平衡全球战略风险.指南还提出确保联合部队执行新的、废止"不问,不说"的政策,确保整个废止过程有序引导,保持部队的战备.     

锻造海军陆战队特种作战勇士

美国海军陆战队特种作战司令部成立四年以来,能力逐日增强,作战任务多样而繁复,为了应对不断增加的作战需求,司令部对内部结构和规模着手进行调整,单位编组、人员选拔、课程训练等各方面都提出了相应计划,以期用最优状态打赢未来战争.     

俄罗斯19～20世纪战争的结论和启示

在19~20世纪的俄(苏)历史上,发生了包括两次世界大战在内的多场战争,每一场战争,俄国均有失误和错误.本文从分析这些战争的基本结论和教训入手,提出了现代条件下如何进行军事建设的一些思考.