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stiffened ideal for the design of large thickness overcome the problems that may...
加强肋
理想的设计
为了克服壁厚大可能引起的问题,使用是一种可减少壁厚并能增加刚性的有效方法。
一般来说,部件的刚性可用以下方法增强
增加壁厚;
增大弹性模量(如加大增强纤维的含量);
设计中考虑。
如果设计用的材料不能满足所需刚性,则应选择具有更大弹性模量的材料。简单的方法是增加塑料中增强纤维的含量。但是,在特定壁厚下,这种方法仅能使刚性呈线性增长。更有效的方法是使用经过优化设计的。由于惯性力矩增大,部件的刚性便会增大。在优化的尺寸时,不但要考虑工程设计应当考虑的问题,还应考虑与生产和外观有关的技术问题。
优化的尺寸
大的惯性力矩可很容易地通过设置又厚又高的来实现。但是对热塑性工程塑料,这种方法常会产生制品表面凹痕、内部空洞和翘曲等问题。而且,如果的高度过高,在负荷下结构将有可能膨胀。出于这种考虑,必须在合理比例内保持的尺寸(见图1)。-stiffened ideal for the design of large thickness overcome the problems that may arise. use of a reduced wall thickness and rigidity can increase the effective method. In general, the rigid parts of the following methods can be used to enhance increased thickness; increased elastic modulus (such as increasing fiber content); Design considerations. If the design of the materials used can not meet the rigid requirements, they should have a greater choice of elastic modulus of the material. The simple way out is to increase plastics reinforced fiber content. However, in s
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游戏男孩模拟器virtual_gameb DOS版(C语言)
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这是一个VC版的电子便笺, 这是一个VC版的电子便笺
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型的年份和月份,它会显示日历,CLA赋值
type year and month, it will show the calender, an assignment in cla-type year and month, it will show the calender, an assignment in class
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一个朋友写的压力测试软件,我个人认为有可能是我的。
一个哥们写的压力测试软件,我个人认为有可学习的地方,大家一起学习一下吧。-a buddy write the pressure test software, I personally think that there can be learning, you learn about it.
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0120_
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1.首先选定图的类别(有向图、无向图),再选定图的存储结构,根据输入的顶点或者边建立图;并把相应的邻接表或者邻接矩阵输出;
2.根据已有的邻接矩阵或邻接表用...
1.首先选定图的类别(有向图、无向图),再选定图的存储结构,根据输入的顶点或者边建立图;并把相应的邻接表或者邻接矩阵输出;
2.根据已有的邻接矩阵或邻接表用递归方法编写深度优先搜索遍历算法,并输出遍历结果;
-1. First of all selected map type (directed graph, undirected graph), re-selected map storage structure, under the Importation of the establishment of the vertex or edge map and the corresponding adjacency list or adjacency matrix output 2. According to Some adjacency matrix or adjacency list prepared by the recursive depth-first search method traversal algorithm, and output traversal results
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用VB实现windows关机
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用VB实现windows关机
用VB实现windows关机-windows with VB with VB shutdown windows shutdown
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关于SNMP++的文章
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数据库程序....详细看里面
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