【习题】静态分析导弹发射架 ？

FreddyMusic

【习题】静态结构分析小型导弹发射架 / Analysis of missile lauch frame ？

加分题，很简单。（5分以上者，就不用做了）

题目在老外的网站上（略有窜改 ）
http://www.andrew.cmu.edu/course/24-ansys/htm/s1_tower.htm

Introduction: In this example you will learn to use the 2-D Truss element in ANSYS.

Physical Problem: A missile lauch frame is a common example of a structure
that is made up of only truss members. These frame are actually 3-D structures,
but for the sake of simplicity we will take a cross-sectional face of the tower.
The tower is mainly subjected to loading in the vertical direction due to the weight
of the cables. Also it is subjected to forces due to wind. In this example we will
consider only loading due to the weight of the cables, which is in the vertical direction.

Problem Description:        
The frame is made up of trusses. You may recall that a truss is a structural element
that experiences loading only in the axial direction.  
Units: Use S.I. units ONLY

Geometry: the cross sections of each of the truss members is 6.25e-3 sq. meter.
Material: Assume the structure is made of steel with modulus of elasticity E=200 GPa.
Boundary conditions: The tower is constrained along X and Y directions at the bottom
left corner, and along Y direction at the bottom right corner.
Loading: The tower is loaded at the top. The load is in horizontal direction only,
and its magnitude is 5000 N.
Objective:  To determine deflection at each joint.
To determine stress in each member.
To determine reaction forces at the base.
You are required to hand in print outs for the above.
Figure:  The five trusses at the top are each 3m in length.

大家只要自己按着指令 一步一步做，就能拿到加分。

老规矩：自己做题 （贴出答案者 + 1 分 贴出命令流者 +3 分）

[ 本帖最后由 FreddyMusic 于 2006-4-16 19:45 编辑 ]

fjz_1

哈哈，小弟初学，请多指教，命令流在附件中

FreddyMusic

fjz_1

Check out below threads, +2 Score is waiting for you.

http://www.simwe.com/forum/viewthread.php?tid=116056

http://www.simwe.com/forum/viewthread.php?tid=10007

See you soon,

FreddyMusic

fjz_1

My lord,I am sorry,I don't catch your mean.Do you want me to clean up the command stream?

fjz_1

通过版主的介绍，我去查看了那两个链接，讲得真精彩，谢谢你版主，我又学会了不少。不过我对命令流还是有点糊涂，因为他的命令太多了，我一下子记不过来，整理的命令流可能还有不足之处，请版主指正！

hai00011

还可以加分吗？
这是我做的命令流 ，呵呵

hai00011

结果如图所示，轴向应力图

henanniu

FreddyMusic 斑竹让我感动的有点像点眼泪了，这个版由于其自身的特殊性，可能关注的人不是很多。但是斑竹还是这么尽职，给我们出题作，感谢！由衷感谢！

qiuweibuaa

好感动 版主太好了  以后继续支持你的工作

winter2004

支持一下我们的航天业啊