TIED contact and beam won’t converge in CCX 2.17-2.21

[victorkemp]

It worked OK in 2.16 but not subsequent versions. The contact isn’t on the beam element but just coexists on other elements in the same file.

*NODE
1,1,-0.5,0
2,0,-0.5,2
3,1,0.5,0
4,1,-0.5,2
5,0,0.5,2
6,1,-0.5,4
7,1,-0.5,2
8,1,0.5,2
9,0,-0.5,0
10,0,0.5,0
11,1,0.5,4
12,0,0.5,2
13,1,0.5,2
14,0,0.5,4
15,0,-0.5,2
16,4,0,4
17,0,-0.5,4
18,4,0,0
*ELEMENT,TYPE=C3D8,ELSET=SOLID
1,9,1,3,10,15,7,13,5
3,2,4,8,12,17,6,11,14
*ELEMENT,TYPE=B31,ELSET=BEAM
2,18,16
*SURFACE,NAME=BONDED_CONTACT_FACES(2)
3,S1
*SURFACE,NAME=BONDED_CONTACT_FACES
1,S2
*MATERIAL,NAME=MATERIAL
*ELASTIC,TYPE=ISOTROPIC
200000000000,0
*SOLID SECTION,ELSET=SOLID,MATERIAL=MATERIAL
*BEAM SECTION,ELSET=BEAM,MATERIAL=MATERIAL,SECTION=RECT
1,1
0,1,0
*BOUNDARY
1,1,3,0
3,1,3,0
9,1,3,0
10,1,3,0
18,1,6,0
*CONTACT PAIR,INTERACTION=SI_1,TYPE=SURFACE TO SURFACE,ADJUST=57.44562646538
BONDED_CONTACT_FACES(2),BONDED_CONTACT_FACES
*SURFACE INTERACTION,NAME=SI_1
*SURFACE BEHAVIOR,PRESSURE-OVERCLOSURE=TIED
1000000000000,1
*FRICTION
1,1000000000000
*STEP
*STATIC
*CLOAD
17,2,125000
6,2,125000
11,2,125000
14,2,125000
16,2,500000
*NODE FILE
U
*END STEP

https://calculix.discourse.group/t/tied-contact-and-beam-wont-converge-in-ccx-2-17/2236