2015 年2 月，全国港口生产总体运行平稳。其中，春节时间错位导致港口货物吞吐量增速有所回落；外贸利好支撑外贸吞吐量好转、集装箱吞吐量呈较快增长。

A wheeled tractor is a type of heavy equipment used to move asphalt, dirt, snow, logs, raw materials, debris, rocks, and sand during construction and mining activities. These tractors can be easily converted into loaders based on users' requirements. Various tools, such as dozer blades, buckets, and rippers, can be easily attached to the tractors to convert them into bulldozers, front loaders, and front-end loaders.

The global de-icing market consists of three major products: de-icer trucks, snow blowers and sweepers, and de-icing chemicals and fluids, which enable the safe flight operation of an aircraft. Government organizations such as FAA have mandated the de-icing of each and every aircraft, before flight operation, to ensure the safety of the passengers and the airline. We expect the global aircraft de-icing market to grow at a CAGR of 3.68% during the period 2014-2019. In 2014, the market was led by the Americas with a share of 61.48%, followed by EMEA with 34.69% and APAC with 3.83%.

Aerospace coatings are products used to enhance the exterior appearance of various types of aircraft. They are also used to improve the durability of the aircraft body by protecting it from harsh external factors such as UV radiation, heat, and cold. Aerospace coatings are used by aircraft manufacturers in the production of new aircraft as well as when overhauling existing aircraft. Vendors in the market offer products for four different functional layers: e-coat, primer, basecoat, and clearcoat.

基于有限元软件ABAQUS,结合虚拟裂纹闭合法、裂纹扩展判据及子结构技术,应用脚本语言Python开发了模拟疲劳裂纹扩展的程序(FCG-System)。对含初始裂纹的油船纵骨节点疲劳裂纹扩展进行数值模拟,并探讨侧向压力和轴向拉力这两种载荷对疲劳裂纹扩展路径和疲劳寿命的影响。结果表明,两种加载方式下裂纹扩展路径不同,且面板断裂前的疲劳寿命在总寿命中占据很大的成分。

以双壳体潜艇的典型结构—双层环肋圆柱壳受多物体撞击为研究对象,开展了模型试验,并与仿真计算结果进行对比,验证了有限元数值仿真方法对求解该类问题的有效性。还从结构损伤变形、撞击力历程和能量转换等方面对多物体撞击壳体过程的动响应特性进行了分析。研究成果将为潜艇抗撞能力的评估及抗撞结构的设计提供参考。

针对一台自行设计的浮摆式波浪发电平台的运动特点与采能方式,对其系泊系统进行设计。系泊型式为"平台—连接缆—浮筒—锚链—锚"的悬链线单点浮筒系泊。以试验海域海况参数为依据,计算系统载荷,并采用准静力分析法对系泊系统各构件进行选型设计。设计的连接缆为钢丝绳,浮筒为圆柱型钢制浮筒,锚链为二级有档锚链,作业锚为AC-14锚。经检验,设计的系统符合安全要求和平台稳定性需求。