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某高校,主要人员有:领导、教师和学生,共有的信息包括:编号、姓名、性别、年龄。其中领导还应包含的信息有:任职部门(学院、各系部)、职称;教师还应包含的信息有:职...
某高校,主要人员有:领导、教师和学生,共有的信息包括:编号、姓名、性别、年龄。其中领导还应包含的信息有:任职部门(学院、各系部)、职称;教师还应包含的信息有:职称、任职时间、专业;学生还应包含的信息有:所在班级、所在宿舍等。-Certain universities, key personnel are: leadership, teachers and students, shared information includes: number, name, gender, age. Which should also contain information on the leadership are: serving sector (colleges, faculties Department), title teachers should also contain information that includes: title, service time, professional students should also contain information that includes: where the classes, where the dormitories .
- 2022-02-05 11:51:43下载
- 积分:1
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Sports Lottery star Choi intelligent random selection procedures are interested...
体育彩票七星彩的智能选号程序,有兴趣的朋友请联系天家好的选号规则。19197662099。-Sports Lottery star Choi intelligent random selection procedures are interested please contact friends good family day-out rules. 19197662099.
- 2022-01-25 17:30:38下载
- 积分:1
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Labview电子教程,希望大家有用
Labview电子教程,希望大家有用-labview,hope it can help you....
- 2022-06-13 06:35:41下载
- 积分:1
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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
- 2022-01-28 16:48:59下载
- 积分:1
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ads1.2 44b0 RTC读写 RtcAlarm
ads1.2 44b0 RTC读写 RtcAlarm-ads1.2 44b0 RTC read and write RtcAlarm
- 2023-06-08 14:20:03下载
- 积分:1
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greed algorithm
贪心算法,动态生成数组后,然后计算得到最小生成树-greed algorithm
- 2022-10-13 14:00:02下载
- 积分:1
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第一次,试一试,这是一个C语言程序源代码,主要是希望到这里进行学习...
第一次,试一试,这是一个C语言程序源代码,主要是希望到这里进行学习-first test, which is a C-language source code, mainly in the hope of learning here
- 2022-05-26 17:13:18下载
- 积分:1
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实现电子元器件绘制系统.帮助电子工程人员利用计算机完成电路板上常见元器件的绘制....
实现电子元器件绘制系统.帮助电子工程人员利用计算机完成电路板上常见元器件的绘制.
-Electronic mapping system components. Help electronic engineers use computer circuit boards to complete the rendering common components.
- 2022-01-26 05:59:07下载
- 积分:1
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实现时间定时功能 用DS1307芯片显示年月日 并有报警信息!可以下载来直接应用...
实现时间定时功能 用DS1307芯片显示年月日 并有报警信息!可以下载来直接应用-time-timing function using DS1307 chips showed, on Day and alarm information! Can be downloaded to direct application! !
- 2022-11-29 22:15:09下载
- 积分:1
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这个m文件模拟差分相移键控(DPSK)超宽带宽…
This m file simulates a differential phase shift keyed (DPSK) ultra wide bandwidth(UWB) system using a fifth derivative waveform equation of a Gaussian pulse.
- 2022-01-22 00:23:06下载
- 积分:1