36 . XFEM_STR ,NEL ,NFT ,IXC ,ELCUTC ,
37 . ILAY ,NLAY ,IEL_CRK ,INOD_CRK ,
38 . IADC_CRK ,NODENR ,ELCRKINI ,DIR1 ,DIR2 ,
39 . NODEDGE ,CRKNODIAD ,KNOD2ELC ,CRKEDGE ,A_I ,
40 . XL2 ,XL3 ,XL4 ,YL2 ,YL3 ,
52#include "implicit_f.inc"
57#include "com_xfem1.inc"
61 INTEGER NEL,NFT,IXC(NIXC,*),ILAY,NLAY,NGL(NEL),IEL_CRK(*),
62 . INOD_CRK(*),NODENR(*),IADC_CRK(4,*),ELCRKINI(NLAY,NEL),
63 . ELCUTC(2,*),NODEDGE(2,*),CRKNODIAD(*),KNOD2ELC(*),XEDGE4N(4,*)
64 my_real DIR1(NLAY,NEL),DIR2(NLAY,NEL),A_I(NEL),
65 . XL2(NEL),YL2(NEL),XL3(NEL),YL3(NEL),XL4(NEL),YL4(NEL)
66 TYPE (ELBUF_STRUCT_),
TARGET :: ELBUF_STR
67 TYPE (ELBUF_STRUCT_),
DIMENSION(NXEL) :: XFEM_STR
68 TYPE (XFEM_EDGE_) ,
DIMENSION(*) :: CRKEDGE
72 INTEGER I,J,K,II,R,IR,P1,P2,PP1,PP2,PP3,NEWCRK,IED,OK,
73 . icrk,ielcrk,elcrk,nx1,nx2,nx3,nx4,nm,np,fac,ifi1,ifi2,iedge,
74 . icut,sigbeta,nod1,nod2,ie1,ie2,ie10,ie20,itri,iad1,iad2,iad3,iad4
76 INTEGER ECUT(2,NEL),EDGEL(4,),IENR0(4,NEL),dd(4),d(8),KPERM(8),
77 . N(4),NN(4),IADC(4),IENR(4),ENR(4),ISIGN(4),EN(2,4)
78 INTEGER ,
DIMENSION(NEL) :: JCT,ELFISS,TIP
80 my_real,
DIMENSION(2) :: XMI,YMI
81 my_real,
DIMENSION(2,NEL) :: XIN,YIN
82 my_real,
DIMENSION(4,NEL) :: len,xxl,yyl,fit,beta0
84 . xint,yint,fi,cross,acd,bcd,dlx,dly,d12,m12
85 . bmin,bmax,dir11,dir22,x1,y1,x2,y2,x3,y3,x4,y4,area1,area2,area3
87 DATA d/1,2,2,3,4,3,1,4/
89 DATA kperm/1,2,3,4,1,2,3,4/
90 parameter(bmin = 0.01, bmax = 0.99)
95 IF (elcrkini(ilay,i) == 1)
THEN
100 IF (newcrk == 0)
RETURN
129 len(1,i) = xl2(i)*xl2(i) + yl2(i)*yl2(i)
130 len(2,i) = (xl3(i)-xl2(i))*(xl3(i)-xl2(i))+
131 . (yl3(i)-yl2(i))*(yl3(i)-yl2(i))
132 len(3,i) = (xl4(i)-xl3(i))*(xl4(i)-xl3(i))+
133 . (yl4(i)-yl3(i))*(yl4(i)-yl3(i))
134 len(4,i) = xl4(i)*xl4(i) + yl4(i)*yl4(i)
141 elcrk = iel_crk(i+nft)
146 iedge = xedge4n(k,elcrk)
148 icut = crkedge(ilay)%ICUTEDGE(iedge)
150 nod1 = nodedge(1,iedge)
151 nod2 = nodedge(2,iedge)
152 IF (nod1 == ixc(k+1,i) .and. nod2 == ixc(dd(k)+1,i))
THEN
155 ELSE IF (nod2 == ixc(k+1,i) .and. nod1 == ixc(dd(k)+1,i))
THEN
168 beta = crkedge(ilay)%RATIO(iedge)
169 xin(1,i) = xxl(p1,i) + beta*(xxl(p2,i) - xxl(p1,i))
170 yin(1,i) = yyl(p1,i) + beta*(yyl(p2,i) - yyl(p1,i))
172 elfiss(i) = crkedge(ilay)%EDGEICRK(iedge)
173 ienr0(p1,i) = crkedge(ilay)%EDGEENR(1,iedge)
174 ienr0(p2,i) = crkedge(ilay)%EDGEENR(2,iedge)
176 iedge = xedge4n(ied,elcrk)
177 tip(i) = crkedge(ilay)%EDGETIP(1,iedge)
179 WRITE(iout,*)
'ERROR IN ADVANCING CRACK --- CHECK CRACK TIP'
189 elcrk = iel_crk(i+nft)
196 IF (dir11 == zero)
THEN
198 r = kperm(ecut(1,i) + k)
199 iedge = xedge4n(r,elcrk)
200 nod1 = nodedge(1,iedge)
201 nod2 = nodedge(2,iedge)
202 IF (nod1 == ixc(r+1,i) .and. nod2 == ixc(dd(r)+1,i))
THEN
205 ELSE IF (nod2 == ixc(r+1,i).and.nod1 == ixc(dd(r)
THEN
209 dlx = xxl(p2,i) - xxl(p1,i)
210 IF (dlx /= zero)
THEN
211 dly = yyl(p2,i) - yyl(p1,i)
214 yint = yyl(p1,i) + m12*(xint-xxl(p1,i))
215 IF ((xint-xxl(p1,i))*(xint-xxl(p2,i)) <= zero .and.
216 . (yint-yyl(p1,i))*(yint-yyl(p2,i)) <= zero)
THEN
217 cross = (xxl(p1,i) - xint)**2 + (yyl(p1,i) - yint)**2
218 beta = sqrt(cross / len(r,i))
219 IF (beta > bmax .OR. beta < bmin)
THEN
220 beta =
max(beta, bmin)
221 beta =
min(beta, bmax)
222 yint = yyl(p1,i) + beta*(yyl(p2,i)-yyl(p1,i))
235 ELSEIF (dir22 == zero)
THEN
237 r = kperm(ecut(1,i) + k)
238 iedge = xedge4n(r,elcrk)
239 nod1 = nodedge(1,iedge)
240 nod2 = nodedge(2,iedge)
241 IF (nod1 == ixc(r+1,i) .and. nod2 == ixc(dd(r)+1,i))
THEN
244 ELSE IF (nod2 == ixc(r+1,i).and.nod1 == ixc(dd(r)+1,i))
THEN
248 dly = yyl(p2,i) - yyl(p1,i)
249 IF (dly /= zero)
THEN
250 dlx = xxl(p2,i) - xxl(p1,i)
253 xint = xxl(p1,i) + m12*(yint-yyl(p1,i))
254 IF ((xint-xxl(p1,i))*(xint-xxl(p2,i)) <= zero .and.
255 . (yint-yyl(p1,i))*(yint-yyl(p2,i)) <= zero)
THEN
256 cross = (xxl(p1,i) - xint)**2 + (yyl(p1,i) - yint)**2
257 beta = sqrt(cross / len(r,i))
258 IF (beta > bmax .OR. beta < bmin)
THEN
260 beta =
min(beta, bmax)
261 xint = xxl(p1,i) + beta*(xxl(p2,i)-xxl(p1,i))
274 ELSEIF (dir11 /= zero .and. dir22 /= zero)
THEN
276 r = kperm(ecut(1,i) + k)
278 nod1 = nodedge(1,iedge)
279 nod2 = nodedge(2,iedge)
280 IF (nod1 == ixc(r+1,i) .and. nod2 == ixc(dd(r)+1,i))
THEN
283 ELSE IF (nod2 == ixc(r+1,i).and.nod1 == ixc(dd(r)+1,i))
THEN
288 dlx = xxl(p2,i) - xxl(p1,i)
289 dly = yyl(p2,i) - yyl(p1,i)
291 IF (dlx == zero)
THEN
293 yint = yint0 + mm*(xint-xint0)
294 IF ((yint-yyl(p1,i))*(yint-yyl(p2,i)) <= zero)
THEN
295 cross = (yyl(p1,i) - yint)**2
296 beta = sqrt(cross / len(r,i))
297 IF (beta > bmax .OR. beta < bmin)
THEN
298 beta =
max(beta, bmin)
299 beta =
min(beta, bmax)
300 yint = yyl(p1,i) + beta*(yyl(p2,i)-yyl(p1,i))
309 ELSEIF (dly == zero)
THEN
311 xint = xint0 + (yint0-yyl(p1,i)) / mm
312 IF ((xint-xxl(p1,i))*(xint-xxl(p2,i)) <= zero)
THEN
313 cross = (xxl(p1,i) - xint)**2
314 beta = sqrt(cross / len(r,i))
315 IF (beta > bmax .OR. beta < bmin)
THEN
316 beta =
max(beta, bmin)
317 beta =
min(beta, bmax)
318 xint = xxl(p1,i) + beta*(xxl(p2,i)-xxl(p1,i))
330 xint = (yint0-yyl(p1,i) + m12*xxl(p1,i) - mm*xint0)/(m12-mm)
331 yint = yint0 + mm*(xint-xint0)
332 acd = (yint-yyl(p1,i))*(xint0 - xxl(p1,i))
333 . - (xint-xxl(p1,i))*(yint0 - yyl(p1,i))
334 bcd = (yint-yyl(p2,i))*(xint0 - xxl(p2,i))
335 . - (xint-xxl(p2,i))*(yint0 - yyl(p2,i))
336 IF (acd*bcd <= zero)
THEN
337 cross = (xxl(p1,i) - xint)**2 + (yyl(p1,i) - yint)**2
338 beta = sqrt(cross / len(r,i))
339 IF (beta > bmax .OR. beta
THEN
340 beta =
max(beta, bmin)
341 beta =
min(beta, bmax)
342 xint = xxl(p1,i) + beta*(xxl(p2,i)-xxl(p1,i))
343 yint = yyl(p1,i) + beta*(yyl(p2,i)-yyl(p1,i))
364 IF (edgel(r,i)==1 .or. edgel(r,i)==2) fac=fac+1
367 WRITE(iout,*)
'ERROR IN ADVANCING CRACK. NO CUT EDGES'
374 elcrk = iel_crk(i+nft)
377 crkedge(ilay)%IEDGEC(k,elcrk) = ied
395 xmi(ied) = half*(xxl(p1,i)+xxl(p2,i))
396 ymi(ied) = half*(yyl(p1,i)+yyl(p2,i))
401 CALL lsint4(xmi(1),ymi(1),xmi(2),ymi(2),xxl(k,i),yyl(k,i),fi)
402 IF (fit(k,i) == zero) fit(k,i)=fi
410 elcrk = iel_crk(i+nft)
413 iedge = xedge4n(k,elcrk)
414 icut = crkedge(ilay)%ICUTEDGE(iedge)
416 crkedge(ilay)%ICUTEDGE(iedge) = 3
418 crkedge(ilay)%ICUTEDGE(iedge) = 2
419 crkedge(ilay)%RATIO(iedge) = beta0(k,i)
427 elcrk = iel_crk(i+nft)
429 numelcrk = numelcrk + 1
431 iadc(1) = iadc_crk(1,elcrk)
432 iadc(2) = iadc_crk(2,elcrk)
433 iadc(3) = iadc_crk(3,elcrk)
434 iadc(4) = iadc_crk(4,elcrk)
448 nn(1) = inod_crk(n(1))
449 nn(2) = inod_crk(n(2))
450 nn(3) = inod_crk(n(3))
451 nn(4) = inod_crk(n(4))
455 isign(1) = int(sign(one,fit(1,i)))
456 isign(2) = int(sign(one,fit(2,i)))
457 isign(3) = int(sign(one,fit(3,i)))
458 isign(4) = int(sign(one,fit(4,i)))
460 IF (fit(1,i) == zero) isign(1) = 0
461 IF (fit(2,i) == zero) isign(2) = 0
462 IF (fit(3,i) == zero) isign(3) = 0
463 IF (fit(4,i) == zero) isign(4) = 0
468 IF (ienr0(k,i) == 0)
THEN
469 ienr(k) = crknodiad(iadc(k)) + knod2elc(nn(k))*(ilay-1)
477 iedge = xedge4n(k,elcrk)
478 nod1 = nodedge(1,iedge)
479 nod2 = nodedge(2,iedge)
480 ie10 = crkedge(ilay)%EDGEENR(1,iedge)
481 ie20 = crkedge(ilay)%EDGEENR(2,iedge)
482 IF (nod1 == ixc(k+1,i) .and. nod2 == ixc(dd(k)+1,i))
THEN
488 ELSE IF (nod2 == ixc(k+1,i) .and. nod1 == ixc(dd(k)+1,i))
THEN
495 crkedge(ilay)%EDGEENR(1,iedge) =
max(ie1,ie10)
496 crkedge(ilay)%EDGEENR(2,iedge) =
max(ie2,ie20)
497 IF (crkedge(ilay)%EDGEICRK(iedge) == 0)
498 . crkedge(ilay)%EDGEICRK(iedge) = icrk
506 iedge = xedge4n(k,elcrk)
507 crkedge(ilay)%EDGETIP(1,iedge) = tip(i)
508 crkedge(ilay)%EDGETIP(2,iedge) =
509 . crkedge(ilay)%EDGETIP(2,iedge) + 1
511 IF (isign(k) > 0)
THEN
514 ELSEIF (isign(k) < 0)
THEN
522 ELSEIF (itri == 3)
THEN
525 ELSEIF (itri == 2)
THEN
527 IF (np > 1 .and. isign(np-1) > 0)
THEN
542 crkedge(ilay)%LAYCUT(elcrk) = 1
553 crklvset(pp1)%ENR0(1,iadc(1)) = -ienr(1)
554 crklvset(pp1)%ENR0(1,iadc(2)) = -ienr(2)
555 crklvset(pp1)%ENR0(1,iadc(3)) = -ienr(3)
556 crklvset(pp1)%ENR0(1,iadc(4)) = -ienr(4)
558 IF (isign(1) > 0)
crklvset(pp1)%ENR0(1,iadc(1)) = 0
559 IF (isign(2) > 0)
crklvset(pp1)%ENR0(1,iadc(2)) = 0
560 IF (isign(3) > 0)
crklvset(pp1)%ENR0(1,iadc(3)) = 0
561 IF (isign(4) > 0)
crklvset(pp1)%ENR0(1,iadc(4)) = 0
565 crklvset(pp2)%ENR0(1,iadc(1)) = -ienr(1)
566 crklvset(pp2)%ENR0(1,iadc(2)) = -ienr(2)
567 crklvset(pp2)%ENR0(1,iadc(3)) = -ienr(3)
568 crklvset(pp2)%ENR0(1,iadc(4)) = -ienr(4)
570 IF (isign(1) < 0)
crklvset(pp2)%ENR0(1,iadc(1)) = 0
571 IF (isign(2) < 0)
crklvset(pp2)%ENR0(1,iadc(2)) = 0
572 IF (isign(3) < 0)
crklvset(pp2)%ENR0(1,iadc(3)) = 0
573 IF (isign(4) < 0)
crklvset(pp2)%ENR0(1,iadc(4)) = 0
594 area1 = half*abs((x1-x3)*(y2-y1) - (x1-x2)*(y3
596 area1 = area1 * a_i(i)
600 xfem_str(3)%GBUF%OFF(i) = zero
602 xfem_str(3)%BUFLY(ilay)%LBUF(1,1,1)%OFF(i
604 ELSEIF (itri < 0)
THEN
605 ie1 = xedge4n(nx2,elcrk)
606 ie2 = xedge4n(nx4,elcrk)
608 IF (crkedge(ilay)%ICUTEDGE(ie2) > 1)
THEN
620 crklvset(pp2)%ENR0(1,iad1) = -crknodiad(iad1) - knod2elc(nn(nx1))*(ilay-1)
623 ied = crkedge(ilay)%IEDGEC(nx4,elcrk)
630 area2 = half*abs((x1-x3)*(y2-y1) - (x1-x2)*(y3-y1))
632 ied = crkedge(ilay)%IEDGEC(nx1,elcrk)
637 area1 = half*abs((x1-x3)*(y2-y1) - (x1-x2)*(y3-y1))
639 area1 = area1 * a_i(i)
640 area2 = area2 * a_i(i)
641 area3 = one - area1 - area2
642 ELSEIF (crkedge(ilay)%ICUTEDGE(ie1) > 1)
THEN
643 print*,
' IMPOSSIBLE CASE'
646 ELSEIF (itri > 0)
THEN
647 ie1 = xedge4n(nx1,elcrk)
648 ie2 = xedge4n(nx4,elcrk)
650 IF (crkedge(ilay)%ICUTEDGE(ie1) > 1)
THEN
661 crklvset(pp1)%ENR0(1,iad1) = -crknodiad(iad1) - knod2elc(nn(nx1))*(ilay-1)
663 ied = crkedge(ilay)%IEDGEC(nx1,elcrk)
670 area1 = half*abs((x1-x3)*(y2-y1) - (x1-x2)*(y3-y1))
672 ied = crkedge(ilay)%IEDGEC(nx4,elcrk)
677 area2 = half*abs((x1-x3)*(y2-y1) - (x1-x2)*(y3-y1))
679 area1 = area1 * a_i(i)
680 area2 = area2 * a_i(i)
681 area3 = one - area1 - area2
682 ELSEIF (crkedge(ilay)%ICUTEDGE(ie2) > 1)
THEN
683 print*,
' IMPOSSIBLE CASE'
691 IF (area3 < zero .or. area1 > one .or. area2 > one .or. area3 > one )
THEN
692 print*,
'ERROR : XFEM PHANTOM ELEMENT AREA: ELCRK=',elcrk