高效低能耗岸桥探讨

以降低功耗为目的,提出对大型岸桥起升机构进行配重平衡设计,并对合理平衡点的确定及增设活配重的设计方案作具体的分析比较。     

Mode Mixity for Orthotropic Interface Delamination in Laminated Composites

The mode mixity is defined based on nonoscillatory strain energy release rate components of delamination between two different orthotropic materials to evaluate the delamination behavior of laminated composites.The result showes that the relative location of the delamination through the thickness influences the mode mixity in a relatively well-regulated way,and that the reinforcement directions of the adjacent plies along the delamination front have a more complicated impact on the mode mixity.This is caused by the bending/twist coupling and bending/bending coupling in the stress field at the crack tip for delamination between multidirectional plies,which completely modifies the stress and strain fields ahead of the crack tip.These kinds of couplings account for the non-uniform distribution of mode mixity values along the delamination front.Application of appropriate mode mixity values is necessary for accurate prediction of delamination growth.     

高职教育专业课程考试改革的探索与思考

高职教育专业课程考试要符合时代发展，适应时代变化。本文从考试的内容和形式上进行分析，指出了现行考试方法存在的问题，提出了改革的措施。     

关于混凝土各种裂缝产生的原因及防治

详细分析了混凝土裂缝产生的原因,包括:大体积混凝土裂缝、收缩裂缝、干缩裂缝、龟裂、沉降裂缝及外力外用下产生的裂缝,针对这些裂缝提出防治措施。     

基于S1000D的动车组IETM管理平台研究

当前我国动车组运用检修技术文件仍沿用传统的非结构化方式编制,但整个过程中文件编写成本高、维护更新困难、沟通协调不畅.通过引入先进的交互式电子技术手册(IETM,Interactive Electronic?Technology?Manual),以结构化的方式对技术文件进行管理,可以降低编写与维护更新成本.S1000D是...