共查询到20条相似文献,搜索用时 125 毫秒
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主要从方舱的冷、热负荷计算方法,空调器的选型及安装,加热器的选型及安装等几个方面介绍了电子方舱的环境控制设计方法。 相似文献
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详细介绍了军用方舱舱体大板内预埋垫板的设计、制作,装入大板时的粘接,在垫板处钻孔、攻螺纹、安装设备等各道工序的工艺.指出了生产中容易出现质量问题的环节,提出了编制工艺文件、施工作业及检验等质量控制中应注意的问题. 相似文献
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本文介绍了80GFJ1方舱电站的设计要求及性能参数。简述了电站总体设计,发电机组设计和方舱设计。针对产品特点,讨论了电站散热问题,同时阐明了如何实现电站与市电并网及电站不间断供电控制装置的设计。 相似文献
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为提高方舱内饰环境,介绍了一种双扩式方舱的内饰设计方案。设计时综合考虑空间布局、色彩、照明系统、装饰要素等方面,并考虑方舱的特殊使用要求,打破了常规方舱内饰设计思想,实际效果超出了预先的设计目标,为用户提供了一个舒适的工作空间,得到用户一致好评。 相似文献
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Xin Mao Gang Shen 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2017,55(7):1029-1044
Inspired by the optimisation design method for restoration of worn wheel profiles, an inverse design method based on optimal rail grinding profiles is presented in this paper. To improve grinding quality, vehicle dynamic performance is chosen as the main criteria and rolling radii difference function is selected as the key factor (also main target function) determining dynamic performance. Grinding material to be removed is chosen as the auxiliary target aimed at extending rail service life. Besides that, wheel–rail contact distribution is also taken into consideration as an auxiliary target preventing stress concentration and fatigue growth. By introducing certain presuppositions, all the design targets will form an inverse design problem. This problem can be solved using hybrid discrete numerical methods. Considering different grinding requirements, two examples of grinding profile design for straight and curved track will be discussed. Results show that the presented method is efficient and effective. Practical implementation has been carried out at several grinding sites in China. 相似文献
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碾压贫混凝土基层配合比设计研究 总被引:3,自引:1,他引:2
京珠高速公路广韶扩建工程水泥混凝土路面基层采用贫混凝土基层结构,为提高工效,决定采用碾压工艺施工,但碾压贫混凝土基层在国内应用较少,现行规范找不到依据。根据施工需要,对碾压贫混凝土基层配合比设计进行了探索,首次采用RA法评价碾压贫混凝土基层的工作性,为该工程大面积施工提供合适的施工配合比。该成果的应用,对现行施工规范是一个补充,可推广使用。 相似文献
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J. Yang G. L. Wang Z. J. Wan C. Liang H. C. Zhou 《International Journal of Automotive Technology》2016,17(4):639-649
Two types of radial tire 11.00R20 and 385/65R22.5 are chosen as the research objects, and their carcass contours are redesigned by using Sakai Hideo’s, Frank’s and the new non-natural equilibrium contour design theories, which were based on analyzing the current non-equilibrium contour design theories of radial tire. Then the tire wear, rolling resistance and grip performance of the two radial tires designed by different non-natural equilibrium contour design theories are comprehensively analyzed with the finite element software ABAQUS. The results show that Frank’s contour design theory can reduce tire wear; the new non-natural equilibrium contour design theory can enhance tire wear, rolling resistance performance, etc. It is also found that the tire carcass contour has great influence on tire performance, especially on the tire rolling resistance. The new non-natural equilibrium contour theory provides a guidance to reduce the tire rolling resistance, and it can break through the target conflicts in tire performance. The tire with the new non-natural equilibrium carcass contour can enhance its comprehensive performance. 相似文献
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环件辗扩成形及其在汽车工业中应用 总被引:1,自引:1,他引:1
本文系统阐述了环件辗扩成形理论、工艺设计方法和辗扩成形技术在我国汽车工业中的应用状况。提出了深入研究和推广应用辗扩成形技术的建议。 相似文献
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为解决传统方法对盾构管片建模重复性工作较多的问题,介绍基于Revit参数化技术,将标准盾构预制管片中的变量参数进行参数化处理,通过修改参数快速生成新的盾构预制管片的方法,且针对盾构管片错缝拼接工作繁琐、拼接位置不准确等问题,采用盾构管片旋转角度参数及盾构管片到参考点距离参数进行参数相关的处理,使盾构管片随距离参数的改变而自动发生相应角度的旋转,从而快速并准确地完成错缝拼接的方法。利用Revit参数化对盾构管片进行建模和错缝拼接的方法,能极大地加快建模的效率和拼装的准确率。该方法成功地应用于上海市虹梅南路盾构隧道管片的设计中,对虹梅南路越江隧道的建设起着重要的作用。 相似文献
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滚动轮胎的稳态热分析 总被引:1,自引:1,他引:1
本文对滚动轮胎的热平衡状态,建立了合理的数学及物理模型,用有限元法对9.00-20尼龙胎进行了模拟计算,得出轮胎内部的温度分布,并对几种不同工况下缓冲层的温度进行了讨论。 相似文献