圆筒

As a result of the operation requirements and the design deficiency,the cylindrical boult of the current flour mill causes the reinforcing rod break frequently in the work process of cylindrical boult.

中文摘 要：当前面粉机圆筒筛由于使用要求和设计缺陷，导致圆筒筛在工作过程中经常出现钢筋断裂。

This paper takes the cylindrical boult of the 40 flour mills as the object of study,establishes the corresponding mechanics model ,connects theory to reality,designs the nut conicity,then uses the same conicity offsetting poor alignment between the nut and the cylindrical boult,decomposes reinforcingsteel radia.

以40型面粉机圆筒筛为研究对象，建立相应的力学模型，通过理论结合实际，设计螺母锥度，在螺母与圆筒筛之间采用同锥度错位配合，将钢筋的径向受力通过锥面分解到钢筋轴向一部分，使得钢筋在轴向和径向都保持尽可能小地受力。

1 When thickness of the short pitch or long neck flange straight side of Type B doesn't equal to the cylinder thickness connected with it: If cylinder thickness is not larger than 10mm, and thickness difference with short pitch or long neck straight side is larger than 3mm; If cylinder thickness is larger than 10mm, and thickness difference with short pitch or long neck straight side is larger than 30% of the cylinder thickness or 5mm, Type B flange should take the slope value 1: 3, and the long neck flange should be thinned according to Chart 1, or have pile welding on the end of butt welding seam to achieve transition.

6.5.1 乙型法兰的短节厚度或长颈法兰的直边厚度与其相联接的圆筒厚度不等时：若圆筒厚度不大于10mm，且与短节或长颈直边厚度差超过3mm；若圆筒厚度大于10mm，且与短节或长颈直边厚度差大于圆筒厚度的30%或超过5mm时，乙型平焊法兰应按斜率1：3，长颈对焊法兰按图1虚线削薄，或者在对接焊缝的筒体端部按图2堆焊过渡。

A metallic cylinder packed with shot that are scattered when the cylinder is fired; case shot.

霰'。''弹一个内装弹丸的金属制圆筒，当圆筒发射后这些弹丸会散开；''。

The visionary Swiss dye-works team had proven talent with the invention of their centrifugally cast cylinders and very soon recognized that the advantages the material and its special production method brought about were suitable also in a completely different field of application: for piping.

瑞士染色工厂团队想象力丰富，发明了离心浇铸圆筒，并很快认识到这种材料的优越性。这种特殊生产方法同样适于另一个完全不同应用领域：管道应用领域。精确地说，应是50年前，第一次将圆筒作为管道来运输水。

Firstly, the equation for stress intensity factors under static uniform pressure is used as the reference case, and then the weight function for a thick-walled cylinder containing a radial edge crack can be worked out. Secondly, the dynamic stresses in uncracked thick-walled cylinders are solved under internal impulsive pressure by using mode shape function method. The solution consists of a quasi-static solution satisfying inhomogeneous boundary conditions and a dynamic solution satisfying homogeneous boundary conditions, and the history and distribution of dynamic stresses in thick-walled cylinders are derived in terms of Fourier–Bessel series. Finally, the dynamic stress intensity factor equations for thick-walled cylinder containing a radial edge crack subjected to internal impulsive pressure are given by dynamic weight function method.

首先采用静态内压下的应力强度因子作为参考解，得到了带径向边裂纹厚壁圆筒的权函数；然后用振型函数方法推导无裂纹厚壁圆筒在冲击内压下的动应力响应，分析中将相应的弹性动力学方程解分为满足非齐次边界条件的准静态解和满足齐次边界条件的动态解的叠加，利用傅立叶-贝塞尔级数展开，推导出了厚壁圆筒内动应力的响应历程和分布规律；最后由动应力权函数方法导出带径向边裂纹厚壁筒在冲击内压下的动态应力强度因子计算公式。

Hides a bottle under a cylinder; can't get it to disappear; tries a new wand, sprinkles the dust, dances about; seizes the cylinder, sticks his arm right through, pulls out a string of flags, a bunch of flowers, a live white wriggling rabbit, a pair of knickerbockers, the bottle!

把一个瓶子藏到圆筒下，怎么都不能让瓶子消失；换一根魔杖，洒出一些金粉，围着圆筒跳跳舞；然后抓住圆筒，把他的右手伸进去，拉出一串旗子，一束花，一只活蹦乱跳的兔子，一条灯笼裤，然后是——那个瓶子！

First mostly contraposing hull deck structure it goes along FEA analysis, discuss the different influence degree of calculational results between the different simplifications of the mathematical model, thereinto mostly analyse five different simplifications of the deck model; Second contraposing hold section and hull deck structure it goes along FEA analysis together, discuss the different influence degree of calculational results between the different elements style, gridding number and gridding density, thereinto mostly analyse the difference between adopting 8 node shell element and 4 node shell element, nondense gridding and thick gridding, and numerous gridding number and few gridding number, In the end mostly contraposing hold section structure it goes along FEA analysis, discuss the different influence degree of calculational results between the different boundary conditions, thereinto mostly analyse the difference between adopting CCS boundary conditions and LR boundary conditions.

首先主要针对船体甲板结构进行分析研究，讨论结构简化不同对有限元计算结果的影响程度，其中主要研究分析了五种不同甲板结构简化模型；紧接着针对舱段与甲板结构一起进行分析研究，讨论单元类型，网格数量与密度的不同对有限元计算结果的影响程度，其中主要研究分析了分别采用8节点板壳单元与4节点板壳单元的不同，以及分别采用疏的网格与密的网格，多的网格数量与少的网格数量的计算结果的差异。最后主要针对舱段模型进行分析研究，讨论不同的边界条件对有限元计算结果的影响程度，其中主要研究分析了分别采用CCS舱段边界条件与LR舱段边界条件进行有限元计算而带来的结果上的差异。本文第二部分为港工建筑物中的大直径薄壁圆筒结构的有限元比较分析。在研究大圆筒的有限元比较分析中，主要讨论用不同的网格密度与数量来划分网格引起的差异。其中用了网格密，数量多与网格疏，数量少两种模型进行大圆筒结构的有限元分析对比

Based on a thorough analysis of screening principlesof cylinder,many-sided studies,which rally closely round the improvement of thescreening ability,have been made on the cylinder screen.

为此，本文在深入分析圆筒筛筛分机理和大量试验的基础上，紧紧围绕着提高圆筒筛筛分性能这个中心，对圆筒筛进行了多方面的研究。

2 Flat and circular knit fabrics:平面和圆筒针织物: tubular finished knit fabric samples representing goods used in the tubular state; i.e., Underwear, sweat shirts, polo shirts, etc., are to be tested in the tubular state.

表示货物在圆筒状态使用的圆筒针织布办﹔如内衣﹐汗衫﹐水球衫等﹐要在圆筒状态测试。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。