苏通大桥承台封底混凝土与钢护筒间握裹力的试验研究与应用

通过对苏通大桥承台封底混凝土与钢护筒间握裹力的试验研究与施工现场监测,提出钢护筒与承台封底混凝土间的握裹力系数。     

转辙机可靠性试验加载装置的研制

通过分析转辙机可靠性试验对加载装置的要求，认为液压式加载比机械式加载更适合转辙机的可靠性试验，对液压加载装置的每个元件都采取为保证其有较高的可靠性，以提高整个液压加载装置的可靠性，试验结果表明液压加载系统达到了预期的目的。     

表面噪声矢量场空间相关特性射线声学建模(英文)

Spatial correlation of sound pressure and particle velocity of the surface noise in horizontally stratified media was demonstrated,with directional noise sources uniformly distributed on the ocean surface.In the evaluation of particle velocity,plane wave approximation was applied to each incident ray.Due to the equivalence of the sound source correlation property and its directivity,solutions for the spatial correlation of the field were transformed into the integration of the coherent function generated by a single directional source.As a typical horizontally stratified media,surface noise in a perfect waveguide was investigated.Correlation coefficients given by normal mode and geometric models show satisfactory agreement.Also,the normalized covariance between sound pressure and the vertical component of particle velocity is proportional to acoustic absorption coefficient,while that of the surface noise in semi-infinitely homogeneous space is zero.     

系泊系统非线性恢复力研究及其应用(英文)

Mooring system plays an important role in station keeping of floating offshore structures.Coupled analysis on mooring-buoy interactions has been increasingly studied in recent years.At present,chains and wire ropes are widely used in offshore engineering practice.On the basis of mooring line statics,an explicit formulation of single mooring chain/wire rope stiffness coefficients and mooring stiffness matrix of the mooring system were derived in this article,taking into account the horizontal restoring force,vertical restoring force and their coupling terms.The nonlinearity of mooring stiffness was analyzed,and the influences of various parameters,such as material,displacement,pre-tension and water depth,were investigated.Finally some application cases of the mooring stiffness in hydrodynamic calculation were presented.Data shows that this kind of stiffness can reckon in linear and nonlinear forces of mooring system.Also,the stiffness can be used in hydrodynamic analysis to get the eigenfrequency of slow drift motions.     

基于模糊层次分析法的指挥员决策能力分析

以自行火炮营为例,提出基于模糊层次分析法的指挥员决策能力量化模型,采用多层次模糊综合评判的方法进行综合评价,最终确定自行火炮营指挥能力的优劣性。     

用于直流快速开关的电磁斥力机构仿真及优化设计

本文对用于直流快速开关的电磁斥力机构进行仿真分析研究,通过优化影响电磁斥力机构设计的主要参数设计了试验样机。通过样机的试验,验证了仿真分析的准确性。     

磷酸铁锂电池材料研究进展

本文对LiFePO4电池的正极、负极、电解液、隔膜的研究进行了展望,指出了目前还存在的缺点和今后的发展方向。     

舰船典型节点参数化建模及形状优化

给出一种船舶结构典型节点的参数化建模及形状优化方法,利用APDL建立某典型节点参数化模型的方法,将该节点形状参数定为设计变量,节点的应力集中系数作为优化设计的目标函数。通过不断改变形状参数,找出较小的应力集中系数。结果表明,该方法可有效降低应力集中,为舰船典型节点结构设计和优化提供参考。     

ESD_FT综合分析法在船用堆失水事故分析中的应用

ESD（事件序列图）方法常用于对事故发展进程及其后果进行分析,但在模型控制及图形建模能力方面存在不足。对较复杂的系统而言,用纯粹的ESD方法所产生的模型往往过于庞大、复杂且不直观。相反,在ESD方法的基础上,对ESD方法进行拓展和完善,采用ESD_FT（故障树）综合分析法所产生的模型比较简洁直观,且可以充分利用故障树分析技术的优势。探讨ESD_FT综合分析法在船用反应堆事故分析中的应用,提出一种新的由内部故障树展开的ESD基本事件,建立船用堆失水事故的ESD_FT分析模型,得到了事故的发生概率。从分析结果可知,ESD_FT综合分析法是一种有效而实用的事故分析方法。     

基于空间光学调制的离焦探测技术研究

本文提出一种基于空间光学调制的离焦探测新方法,利用PZT驱动变形镜对会聚光束进行调制,再经相关检波获得离焦信息。该技术具有测量快速、准确、探测动态范围大等优点。