PSI - Issue 11

J.I. Gisbert et al. / Procedia Structural Integrity 11 (2018) 428–435

433

6

Author name

/ Structural Integ

rity Procedia 00

(2018) 000–000

A s shown in lacements alo constant load Diagonal Co he criterion d pression test. he numerical have been fix Z and X dire n the top pa lacements in esults he ramped d ic vertical di el. Uniaxial com he final unia es, and (iii) 2 r a displacem T

figure 5, rega ng X and Z . mpression escribed to d model has b ed to zero di ctions. rt of the mod X and Z direc

rding the top axis, and a ra

of the mod mped displac

el boundary c ement of 1 m

onditions, al m has been i

l nodes have ntroduced in

been set wit Y axis to rep

h free resent

disp the

3.2.

T com T part both O disp 4. R T stat mod

evelop the un een rotated 4 splacement in el a ramped d tions.

iaxial model, 5 degrees and the Y directi isplacement

solid186 elem , regarding it on, and the sy of 0.2 mm ha

ents, has bee s boundary co mmetry botto s been introd

n followed to nditions, 2 p m axis have uced in the Y

build the dia lanes in the b been constrai axis, leavin

gonal ottom ned in g free

quasi ession

isplacement a splacement lo

nd the materi ad test for b

al properties t oth samples;

hat have been the uniaxial

set to the m compression

odels generate and the dia

a nonlinear gonal compr

4.1.

pression xial compres 40 contacts w ent of 0.55 m

42059 ailing

sion model ha ith fracture s m. The figure

s: (i) 18938 s urfaces. Desp below shows

olid element ite this comp the Poisson e

s counting mo lexity, the mo ffect at the en

rtar and bric del converge d of the load

k units, (ii) 1 s at first try, f ing process.

nod afte

Fig

ure 6: Stress in Y

axis (left) and

Stress in X axis (

right). (Units in M

Pa)

A

nalyzing the tar joints an erence of thei much more st egarding the ple due to th oduces tensio sample.

results of the d bricks due r deformabili ressed that th X direction, e Poisson’s n stresses in t

numerical m to the stress ty. Furthermo e vertical join a growing str effect, which he vertical joi

odel, major difference b re, it can be ts. ess can be ob is greater i nts as well as

Y stresses can etween the seen how the served as the n this materi in the centra

be detected two material horizontal m mortar appro al than for b l part of the b

in the contac s, which is c ortar joints ju aches to the l ricks. This e ricks, causing

ts between v aused becau st under the ateral border xpansion be the final fail

ertical se the bricks of the havior ure of

mor diff are sam intr the

R