TY - JOUR
T1 - Damage propagation in 2d beam lattices
T2 - 2. Design of an isotropic fault-tolerant lattice
AU - Cherkaev, Andrej
AU - Ryvkin, Michael
N1 - Publisher Copyright:
© 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2019/3/15
Y1 - 2019/3/15
N2 - The paper demonstrates a rational design of an isotropic heterogeneous beam lattice that is fault-tolerant and energy-absorbing. Combining triangular and hexagonal structures, we calculate elastic moduli of obtained hybrid heterogeneous structures; simulate the development of flaws in that composite lattice subjected to a uniform uniaxial deformation; investigate its damage evolution; measure various characteristics of damage that estimate fault tolerance; discuss the trade-off between stiffness and fault tolerance. A design is found that develops a cloud of small evenly spread flaws instead of a crack.
AB - The paper demonstrates a rational design of an isotropic heterogeneous beam lattice that is fault-tolerant and energy-absorbing. Combining triangular and hexagonal structures, we calculate elastic moduli of obtained hybrid heterogeneous structures; simulate the development of flaws in that composite lattice subjected to a uniform uniaxial deformation; investigate its damage evolution; measure various characteristics of damage that estimate fault tolerance; discuss the trade-off between stiffness and fault tolerance. A design is found that develops a cloud of small evenly spread flaws instead of a crack.
KW - Beam lattice
KW - Brittle fracture
KW - Evenly spread damage
KW - Fault-tolerant lattice
UR - http://www.scopus.com/inward/record.url?scp=85060352728&partnerID=8YFLogxK
U2 - 10.1007/s00419-018-1428-0
DO - 10.1007/s00419-018-1428-0
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AN - SCOPUS:85060352728
SN - 0939-1533
VL - 89
SP - 503
EP - 519
JO - Archive of Applied Mechanics
JF - Archive of Applied Mechanics
IS - 3
ER -