That was my wrong interpretation.
Attached is a picture of an element that exceeds the shear stress but is not deleted.
Also note the diagram where the element exceeds the maximum shear stress of 637.5 MPa.
What could be the reason for this?
LS-DYNA keyword deck by LS-PrePost
*CONTROL_BULK_VISCOSITY
$# q1 q2 type btype tstype
1.5 0.06 -1 0 0
*CONTROL_HOURGLASS
$# ihq qh
8 0.03
*CONTROL_SHELL
$Shell Theory zurückgesetzt auf 02
$# wrpang esort irnxx istupd theory bwc miter proj
20.0 0 -1 0 2 2 1 0
*CONTROL_TERMINATION
$# endtim endcyc dtmin endeng endmas nosol
0.015 0 0.0 0.01.000000E8 0
*CONTROL_TIMESTEP
$# dtinit tssfac isdo tslimt dt2ms lctm erode ms1st
0.005 0.0 0 0.0 0.0 0 0 0
*DATABASE_NODOUT
$# dt binary lcur ioopt option1 option2
0.001 0 0 1 0.0 0
*DATABASE_RWFORC
$# dt binary lcur ioopt
0.001 0 0 1
*DATABASE_BINARY_D3PLOT
$# dt lcdt beam npltc psetid
5.00000E-4 0 0 0 0
$# ioopt rate cutoff window type pset
0 0 0
*CONTACT_AUTOMATIC_SINGLE_SURFACE
$# cid title
$# surfa surfb surfatyp surfbtyp saboxid sbboxid sapr sbpr
3 3 0 0 0
$# fs fd dc vc vdc penchk bt dt
0.2 0.18 0.0 0.0 0.0 0.01.00000E20
$# sfsa sfsb sast sbst sfsat sfsbt fsf vsf
1.5 1.0 1.0 1.0 1.0 1.0
$# soft sofscl lcidab maxpar sbopt depth bsort frcfrq
1 0.1 0 1.025 2.0 2 0 1
$# penmax thkopt shlthk snlog isym i2d3d sldthk sldstf
0.0 1 2 0 0 0 0.0 0.0
$# igap ignore dprfac dtstif unused unused flangl cid_rcf
1 1 0.0 0.0 0.0 0
*MAT_MODIFIED_JOHNSON_COOK_TITLE
MAT_107_V2A
$# mid ro e pr beta xsi cp alpha
17.90000E-9 200000.0 0.3 1.0 0.95.000000E81.60000E-5
$# e0dot tr tm t0 flag1 flag2
1.0 293.0 1673.0 293.0 0.0 1.0
$# a/siga b/b n/beta0 c/beta1 m/na
310.0 1000.0 0.65 0.007 1.0
$# q1/a c1/n q2/alpha0 c2/alpha1
$# dc/dc pd/wc d1/na d2/na d3/na d4/na d5/na
1.0 150.0
$# tc tauc
637.5
*PART
$# title
Tube_40x1_5
$# pid secid mid eosid hgid grav adpopt tmid
3 1 1 0 0 0 0 0
*SECTION_SHELL_TITLE
Shell_1_5
$# secid elform shrf nip propt qr/irid icomp setyp
1 16 0.8333333 3 1.0 0 0 1
$# t1 t2 t3 t4 nloc marea idof edgset
1.5 1.5 1.5 1.5 0.0 0.0 0.0 0