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介绍智能光网络的发展情况及其基本概念,ASON(自动交换光网络)与现有光传送网技术相比的特点及其优势,详细介绍ASON的传送平面、控制平面、管理平面三个组成平面,阐述了各自的特点和功能,ASON技术所支持的三种连接方式,最后对ASON技术的发展进行了展望。 相似文献
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An open-cell aluminum foam filled with silicate rubber (AFFSR) was fabricated by infiltration of the liquid silicate rubber into the open-cell aluminum foam. The experiments were carried out to investigate the compressive behavior and energy absorption characteristics of the material. It is found that the stress--strain response of the AFFSR exhibits five regions including two plateau regimes, which is quite different from the stress--strain curves of many unfilled metallic foams that usually exhibit three distinct regions. The plastic deformation of the AFFSR is prolonged because of the filled silicate rubber, compared with the aluminum foam without such a filler. The AFFSR also exhibits a higher energy capacity than the aluminum foam without filler. Additionally, for the prolonged plateau region in the stress--strain curve, the energy absorption efficiency of the AFFSR maintains a high level (above 0.6) over a wide strain range from 3% to 60%. 相似文献
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主要研究了气流对排气系统振动特性的影响。利用ANSYSWorkbench分析软件对排气系统作了流场分析、静力学分析、模态分析的数值模拟研究,并在此基础上完成了流固耦合分析,对耦合及非耦合的结果进行了对比。研究结果表明,气流对排气系统结构振动和变形的影响主要在低频区,与非耦合相比,耦合模态频率最大增幅可达3.5%,振型最大偏离为2mm,为进一步优化排气系统结构提供依据。 相似文献
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