一個固體力學的仿真計算

潑墨

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7 }0 @/ r* V! Y7 y8 |- rTwo metallic beams a  and  c are fixed to a block as shown below. Both beam a  and beam  c  remain perpendicular
to block  b  at the connecting points. Beam  a  is attached to a wall and it remains perpendicular to the wall at the
other end. Beam c is passed through a hole in the wall. Direction of the hole is perpendicular to the wall surface.   
* N: }% Z( J) x# {- N% HRelated dimensions are shown on the diagram. The diagram is in millimeter. Beams  a  and c  have a circular
/ A: n8 U% H* c0 u" m: M; Gcross-section with a diameter of 0.7mm. The Young’s modulus is 70 GPa. Both beam a  and beam  c  are initially
$ ^) a/ x+ D9 U4 u' v, ustraight.  
Neglect gravity. Assume a perfect linear relationship between stress  and strain for beams  a  and c . Neglect axial
elongation or compression of beams  a  and  c .  
Using elliptic integrals, derive relevant entities to predict the final shapes of beams a  and  c  when beam c  is pulled
9 t; n4 V: K  [" C8 }* Hfor 10 mm in the indicated direction.   
Use Matlab to implement your derivations and plot the deflected shapes of beams a  and  c  in a figure. You should
# q2 ]9 m% K- M. z9 a8 I: U) `also plot block  b at the desired position. Please make sure your plot has a correct X-Y scale so that the figure
looks realistic.
1 f( d5 D+ u4 N" N5 rPlease also compare how close the deflected shapes of beams  a  and  c  are to circular arcs, by drawing circular arcs
8 e8 [% L4 O% W, y& S$ h; uwhich pass through the two ends of beams a  and c . The circular arcs should also be perpendicular to the wall
+ U7 Z3 o; u: s# dsurface at one end.
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潑墨

大概有10個以上的未知數(shù)和方程,，但是含有數(shù)個超越方程,，用matlab做仿真一直沒出來
有大俠有好的方法么,。。,。,。。

茉莉素馨

這個沒有人會回的,，樓主放棄吧

wolalala12

茉莉素馨 發(fā)表于 2013-12-19 20:42
6 F7 G  j4 o9 ^% Q  e這個沒有人會回的,，樓主放棄吧

9 d5 y0 r4 s1 ~& L同馬克
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成形極限

樓主這是在國外深造�,。�

成形極限

老實說,，我不會做,，看了下題目，估計了下,，估摸著是這種形狀,，哈哈

: c: h- q; E! \  J+ J1 N應該B的重力影響比較大吧

4 D; q( @" K# f7 [

liushaobo1989

求變形嗎,？可以使用有限元？

16443

B看成剛性體
或略a和c的軸向變形
根據(jù)撓度方程聯(lián)列a和c的變形方程