Beams 1. Mechanica > Structure MEE430, KIM,ME,NIU 1

Transcription

1 Beams 1 In proe, create three datum points along x-axis Datum Points > Offset Csys> pick coord. sys > Cartesian > Enter Pts > 0 > CR > 0 > CR > 0 > CR > 6 > CR > 0 > CR > 0 > CR > 12 > 0 > CR 0 > CR > CR > Done Part > Setup > Units > IPS Mechanica > Structure MEE430, KIM,ME,NIU 1

2 Model > Idealization > Beams Repeat this for other beam section between pt1 and pt2 Click arrow button to select pts to define a beam Click [More] > select mat l Type > Beam Y Direction > Vector Start > Section [More] MEE430, KIM,ME,NIU 2

3 Model > Constraints Model > Constraints > Point > Create > click Pt button & select leftmost pt > free z-rotation > Ok Repeat this for middle pt and free x and z- rotations > Ok Pick on leftmost point PT0 Pick on middle point PT1 MEE430, KIM,ME,NIU 3

4 Model > Loads Model > Loads > Pt > Create > click Pt & select rightmost pt > Y=-100 > Ok Pick on rightmost point PT2 MEE430, KIM,ME,NIU 4

5 Model > Materials Model > Materials > Create > see selected AL2014 > Close (cannot choose here) MEE430, KIM,ME,NIU 5

6 Analyses beam1 beam1 MEE430, KIM,ME,NIU 6

7 Check Model MEE430, KIM,ME,NIU 7

8 Run beram1 beam1 beam1 beam1.tmp\kell.bas MEE430, KIM,ME,NIU 8

9 Results stress bending Results > Create > enter box_shell stress window name > bending Bending stress select stress directory > Accept bending stress Define Contents: enter Title > Quantity=(Stress, beam1 Beam Bending) > all Display=Fringe > check fringe Deformed > Accept bending beam1 beam1 loadset1 stress beam1 beam1 bending loadset1 stress Beam bending bendingbeam bending displacement bending stress magnitude beam1 beam1 beam1 beam1 beam1 loadset1 beam1 loadset1 Beam bending stress Displacement Mag Beam bending stress MEE430, KIM,ME,NIU 9

10 Results: SFD & BMD Select first beam > Result Window: Copy > MMB > Ok > Accept enter window name > Repeat this for all Change beams Define Contents: enter Title > Quantity=Shear & Moment > check only Vy & Mz > Select > pick first beam > Ok > MMB > Accept Result Window: Copy > Repeat this for second beam with different name MEE430, KIM,ME,NIU 10

11 Beams 2 In proe, create four datum points along x-axis and for distributed load create beam with datum curve Datum Points > Offset Csys> pick coord. sys > Cartesian > Enter Pts > (0,0,0), (3,0,0), (6,0,0), (9,0,0), Pick two pts (12,0,0) > CR > Done Done Sel > Done For beam with distributed load, first create a datum curve > Thru Pts Pick two pts Mechanica > Structure Mechanica > Structure MEE430, KIM,ME,NIU 11

12 Model > Idealization > Beams For Click beam arrow with button to select distributed pts to load define a Repeat this for beam Edge other > pick on beam sections Click datum [More] curve> select mat l Type > Beam Y Direction > Vector Start > Section [More] MEE430, KIM,ME,NIU 12

13 Model > Constraints Model > Constraints > Point > Create > click Pt button & select leftmost pt > free z-rotation > Ok Repeat this for middle pt and free x- displacement and z- rotations > Ok MEE430, KIM,ME,NIU 13

14 Model > Loads Model > Loads > Pt > Create > click Pt & select rightmost pt > Y=-100 > Ok Model > Loads > Curve/Edge > Create > reference (pick on datum curve) > Distribution=Interpolated Over Entiry > enter 0 & 1 > Preview > Ok > Y- Force=-100 > Preview > Ok Model > Loads > Curve/Edge > Create > reference (pick on datum curve) MEE430, KIM,ME,NIU 14

15 Model > Materials Model > Materials > Create > see selected AL2014 > Close (cannot choose here) MEE430, KIM,ME,NIU 15

16 Analyses beam2 Beam2 MEE430, KIM,ME,NIU 16

17 Check Model MEE430, KIM,ME,NIU 17

18 Run beram2 beam2 beam2 beam2.tmp\kell.bas MEE430, KIM,ME,NIU 18

19 Results stress bending bending Results > Create > enter box_shell Bending bending Beam stress stress bending window name > select bending stress directory > Accept Define Contents: enter Title > Quantity=(Stress, all beam2 Beam Bending) > fringe Display=Fringe > check Deformed > Accept beam2 beam2 beam2 beam2 loadset1 loadset1 displacement bending stress bending stress bending Beam bending magnitude beam2 beam2 beam2 beam2 loadset1 loadset1 Displacement Mag Beam bending stress MEE430, KIM,ME,NIU 19

20 Results: SFD & BMD pick first beam > MMB Result Window: Copy > Ok > > Accept enter window name Repeat > this for all Change beams Define Contents: enter Title > Quantity=Shear & Moment > check only Vy & Mz > Select > pick first beam > Ok > MMB > Accept Result Window: Copy > Repeat this for second beam with different name MEE430, KIM,ME,NIU 20

21 Beams > End > Release Know to use Releases (normally beams are Unreleased, ie, rigidly connected) as: Idealization > Create > Beam > End > Release > More > New > create Release at Pts MEE430, KIM,ME,NIU 21

22 Frames 1 In proe, create a frame shown left with datum curves, =3 Mechanica > Structure MEE430, KIM,ME,NIU 22

23 Model > Idealization > Beams References = Edge/Curve Click [Edges] > Select Many > select all by drawing box Mat l > Steel Y Direction > Vector (0,0,1) Start > Section [More] > select hollow circular section MEE430, KIM,ME,NIU 23

24 View Let s turn off beam section symbols View > Simulation Display > Visibilities > uncheck Beam Sections MEE430, KIM,ME,NIU 24

25 Model > Constraints Model > Constraints > Point > Create > click Pt button & select leftmost pt > Ok Repeat this for other end pt and free x- displacement and z- rotation > Ok MEE430, KIM,ME,NIU 25

26 Local Coord Sys Create local coord at left corner of top element Coord > Offset > pick default coord > Translate > x-axis > enter a value > y-axis > enter a value > Done MEE430, KIM,ME,NIU 26

27 Model > Loads Model > Loads > Curve/Edge > Create > Curves (pick on top element) > Distribution=Total Load/Function Of Coord > click [f(x)] > New > enter expression like [sin(pi*x/6)] > Ok > Y-Force=-1000 > Ok MEE430, KIM,ME,NIU 27

28 Model > Materials Model > Materials > Create > see selected AL2014 > Close (cannot choose here) MEE430, KIM,ME,NIU 28

29 Analyses beam1 frame1 MEE430, KIM,ME,NIU 29

30 Check Model MEE430, KIM,ME,NIU 30

31 Run beram2 frame1 frame1 frame1.tmp\kell.bas MEE430, KIM,ME,NIU 31

32 Results: Results > Create > enter window name > select directory > Accept Define Contents: enter Title > Quantity=Stress > select von Mises > check Deformed > Accept Define Contents: enter Title > Quantity=Shear & Moment > check only Vz & My > Select > pick top beam > Ok > MMB > Accept Result Window: Copy > Repeat this for other two beams with different names MEE430, KIM,ME,NIU 32

33 Results MEE430, KIM,ME,NIU 33