热风炉球顶砖尺寸的设计及计算

研究国内外热风炉球顶砌法及尺寸标准，提出我国球顶砌法，球顶尺寸的设计及计算，为球顶砖尺寸的标准化提供方案。     

基于Visual C#.NET的参数驱动型瓦楞纸箱CAD系统开发

作者以VisualC#.NET为开发平台,设计开发了一个实用的瓦楞纸箱CAD系统,其功能涉及箱型选择、纸板选型、尺寸计算、强度校核以及CAM接口数据输出等。该系统具有参数驱动之特点。     

拱形波纹钢屋盖增强方法

拱形波纹钢屋盖是一种典型的冷弯薄壁空间钢结构,应用范围广泛,具有诸多优点。但其承载力不高,刚度较低,适用的跨度范围有限。提出了一种结构增强方法,介绍了增强措施及特点,采用ABAQUS软件包建立了增强结构的有限元模型,针对不同跨度、矢高及荷载工况,分析了增强前后结构的极限承载力和变形,并进行了比较。结果表明:增强方法显著提高了拱形波纹钢屋盖的极限承载力和刚度,具有一定的适用价值。     

Finite element analysis of vent/hand hole designs for corrugated fibreboard boxes

Corrugated fibreboard is an economical and efficient material for fabricating shipping containers that are widely used for the distribution, transportation and storage of goods. Corrugated fibreboard is usually considered to be an orthotropic material because the principal fibre directions, machine direction (MD) and cross‐machine direction (CD), are identical to the fibres in paperboard, which has apparent directional property differences. The purpose of this study is to investigate the principal design parameters of ventilation holes and hand holes in the faces of the shipping container, (corrugated fibreboard boxes), using finite element analysis (FEA). Various designs of ventilation holes were studied with respect to stress distribution and stress level. It was found that the appropriate pattern and location of the ventilation holes were vertical oblong‐shaped and symmetrically positioned within a certain extent of distance to the right and left from the centre of the front and rear faces of the boxes. On the other hand, the appropriate location and pattern of the hand holes were a short distance from the centre to the top of the boxes on both side faces. The appropriate pattern was a modified shape, such as the radius of curvature of both sides in horizontal oblong. The pattern and location of both the ventilation holes and the hand holes determined by the FEA simulation generally agreed well with laboratory experimental results. The decrease in compression strength of the box could be minimized with identical area of the ventilation holes if the length of the major axis of the ventilation hole is less than 1/4 of the depth of the box and the ratio of the minor axis to the major axis is 1/3.5–1/2.5, provided that even‐numbered holes are located symmetrically. Copyright © 2006 John Wiley & son, Ltd.     

谈谈瓦楞纸箱抗压强度的测定

本文对瓦楞纸箱抗压强度的测定及其影响因素进行了探讨,并提出一些测试过程中要注意的问题.     

Research on corrugated multi‐louvered fins under dehumidification

To enhance automotive evaporator wet‐fin performances, the main task is to promote the draining of condensed water. An accurate and convenient apparatus estimating the fin performances has been developed. Through the measurement of corrugated multi‐louvered fin performances and the visualization of condensed water draining by this apparatus, it was clarified that fin geometries, surface coating, and evaporator installation strongly contributed to the efficiency of draining and fin performances. © 2001 Scripta Technica, Heat Trans Asian Res, 30(5): 383–393, 2001     

燃气用不锈钢波纹软管试点安装

介绍了采用燃气用不锈钢波纹软管的室内燃气管道试点安装工程的前期培训、安装工艺、工程实施过程,讨论了采用燃气用不锈钢波纹软管的优点与缺点.     

瓦楞位置与瓦楞纸板的缓冲特性

利用瓦楞纸板的缓冲特性可作包装缓冲衬垫。主要讨论双层瓦楞纸板位置变化及中层瓦楞纸板缓冲特性及抗压强度的影响。经理论推导得出反映瓦楞纸板缓冲特性和抗压强度的表达式以及刚度、强度与交错位置的关系曲线,并对四种试件进行了反复压缩试验,其结果与理论分析基本吻合。     

液膜蒸发强化传热表面的传热与流动特性分析

提出一种新的液膜蒸发强化换热表面－波纹丝网换热表面，在丝网结构尺寸进行６种改变后，通过对其传热和流动表面规律的研究，发现合适的优化结构可广泛应用于蒸发冷却系统中。