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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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Windows 3.0 programming primer / Alan Southerton. 此书的配套软盘
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实现的是一个虚拟示波器的功能,但只能实现模拟,不能实际测量,只需增加一个模块就行了,运行时注意不要让自动的最大值与最小值相同,否则会一直跳闪,还有就是有些功能测
实现的是一个虚拟示波器的功能,但只能实现模拟,不能实际测量,只需增加一个模块就行了,运行时注意不要让自动的最大值与最小值相同,否则会一直跳闪,还有就是有些功能测的不是很准确,需要调节。-Realize a virtual oscilloscope functions, but only the realization of simulation, not actual measurements, just add a module on the list, run-time attention to not to let the automatic the same maximum and minimum value, otherwise they will always jump flash, there is Some functional test is not very accurate, needs to adjust.
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Battle an online platform is designed to provide a reference, we can learn, as a...
一种网上对战平台的设计,可以提供参考,大家可以学习,作为毕业设计-Battle an online platform is designed to provide a reference, we can learn, as a graduate design
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c语言版贪吃蛇,想要的就快来下载把,
这是早期作品,很有收藏价值...
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这是早期作品,很有收藏价值-c language version of Snake, want to hurry download put on, it is early works, great value to the collection!
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mmnbvtrhgfhfgh
mmnbvtrhgfhfgh
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vb Loans have written before选号re
vb 自己编写双色球,先选号再抽奖,试试自己的运气-vb Loans have written before选号re-draw, try their luck
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Visual Basic数据库开发疑难问题解 。
Visual Basic数据库开发疑难问题解 。-Visual Basic Database Development Problems solution.
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用vb操作二进制文件,打开保存文件.含有vb源码.
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索爱手机维修工具
索爱手机维修工具-SPM phone maintenance tools
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