大功率负极外搭铁交流发电机调节器的设计

根据当前国产负极外搭铁交流发电机电子调节器中存在的问题，设计了一种以感温ＶＭＯＳ管为核心的新型电子调节器，该调节器具有低功耗、过热和短路保护功能。     

半潜式平台关键点的疲劳可靠性分析

依据惯性矩相当和重量相同的原则，建立半潜式钻井平台谱分析计算简化模型；利用ANSYS软件对简化计算模型进行随机响应谱分析，分别计算受到Morison波浪力谱时和受到大构件直立圆柱波浪力谱时的平台结构关键部位关键节点的等效应力随机响应功率谱密度；基于Miner线性损伤累积理论和随机响应首次超越破坏原则的概率分析，分别讨论了Rayleigh和weilbull两种不同应力统计分布下的平台结构关键部位关键节点疲劳可靠性指标的特征。     

从手持订单看全球重点造船集团竞争格局

正21世纪以来,全球造船呈现中日韩三国争霸的竞争格局,欧洲退出主力船型的建造,但近年来凭借豪华邮轮又掀起市场风云。造船国间竞争的背后实际上是各国所属造船集团的竞争,本文就站在各造船集团的视角来观察全球目前造船产业的竞争格局。文中未选择受市场短期影响较大的新接订单作为观测指标,特选取了以既能     

Morphological evolution of a void under thermal and mechanical loads

A model for the morphological evolution of a void under thermal and mechanical loads is established, and the thermodynamics potential of the model is given based on energy principle. Thus, the path and the bifurcation condition of the morphological evolution of the void are described, which gives some insight into the reliability of the interconnect under combined thermal and mechanical loads.     

车用电子设备自保护电路的设计

为了提高车用电子设备的可靠性，设计了几种电子设备自保护电路，以避免由于操作失误或其它原因而导致的电子设备损坏。     

Analytical Solution for Thermo-Electro-Elastic Problems of an Orthotropic Piezoelectric Hollow Cylinder Subjected to Various Loading

An interpolation method was used to solve the Volterra integral equation of the second kind caused by interaction among thermal, electric and mechanical fields. The exact expressions for the transient responses of stresses, electric displacement and electric potential in an orthotropic piezoelectric hollow cylinder were obtained by means of the finite integral transforms. From the sample numerical calculations, it is seen that the present method is suitable for an orthotropic piezoelectric hollow cylinder subjected to arbitrary thermal shock, mechanical load and transient electric excitation. The result can be used as a reference to solve other transient coupled problems of thermo-electro-elasticit y.     

青年用户传统节日的数字参与行为

数字平台成为青年参与传统节日的全新拟像空间，是传承中华优秀传统文化要地。本研究运用仪式理论和沉浸理论提取数字平台节日仪式感、数字平台感知娱乐价值、数字平台感知内容价值三个影响维度，建构青年参与传统节日数字行为的理论模型。在问卷与统计分析后发现：数字平台节日仪式感是青年参与传统节日的直接吸引力；数字平台感知内容价值和感知娱乐价值是间接影响因素，主要通过节日文化观念和沉浸感的中介作用强化青年群体的参与行为。数字拟像中，有关传统节日观念的内容，以及传统节日沉浸感正向影响青年感知节日文化，中华文物借助数字传播走进青年群体；数字拟像的娱乐内容正向影响青年参与数字节日，进而促使青年产生对中华优秀文化的认同。     

电压调节器保护电路研究及设计

分析了市场上销售的２种具有短路保护的电压调节器电路原理，根据电压调节器设计及使用中存在的问题，提出了改进措施，并设计了具有短路保护和过流保护的电压调节器电路。     

Study of Torsional Impact Problem of Orthotropic Hollow Cylinder

IntroductionMany forms of torsional impactcan take placein a lot of engineering fields such as machinedrilling,geologic exploration drilling and struc-tural bolt fastening process.At present,the stud-ies for elastodynamic problems of structure sub-jected to impactloads are mostly focused on the ra-dial shock[1～6] .So far,the theoretical solution forhollow cylinder subjected to torsional impactis sel-dom found.Ref.[7]gave a theoretical solution ofhollow cylinder under torsional impact by makin…