Exploiting microstructural instabilities in solids and structures: from metamaterials to structural transitions
DM Kochmann, K Bertoldi - Applied …, 2017 - asmedigitalcollection.asme.org
Instabilities in solids and structures are ubiquitous across all length and time scales, and
engineering design principles have commonly aimed at preventing instability. However …
engineering design principles have commonly aimed at preventing instability. However …
Aspects of computational homogenization at finite deformations: a unifying review from Reuss' to Voigt's bound
The objective of this contribution is to present a unifying review on strain-driven
computational homogenization at finite strains, thereby elaborating on computational …
computational homogenization at finite strains, thereby elaborating on computational …
[HTML][HTML] Influence of the Lode parameter and the stress triaxiality on the failure of elasto-plastic porous materials
K Danas, PP Castañeda - International Journal of Solids and Structures, 2012 - Elsevier
This work makes use of a recently developed “second-order” homogenization model to
investigate failure in porous elasto-plastic solids under general triaxial loading conditions …
investigate failure in porous elasto-plastic solids under general triaxial loading conditions …
Wave propagation and instabilities in monolithic and periodically structured elastomeric materials undergoing large deformations
K Bertoldi, MC Boyce - Physical Review B—Condensed Matter and Materials …, 2008 - APS
Wave propagation in elastomeric materials undergoing large deformations is relevant in
numerous application areas, including nondestructive testing of materials and ultrasound …
numerous application areas, including nondestructive testing of materials and ultrasound …
Effect of Lode parameter on plastic flow localization after proportional loading at low stress triaxialities
M Dunand, D Mohr - Journal of the Mechanics and Physics of Solids, 2014 - Elsevier
The effect of the stress state on the localization of plastic flow in a Levy–von Mises material
is investigated numerically. A unit cell model is built with a spherical central void that acts as …
is investigated numerically. A unit cell model is built with a spherical central void that acts as …
Low-frequency tunable locally resonant band gaps in acoustic metamaterials through large deformation
S Ning, F Yang, C Luo, Z Liu, Z Zhuang - Extreme Mechanics Letters, 2020 - Elsevier
Acoustic metamaterials have subwavelength characteristics and hence they can be used for
the low-frequency noise and vibration control. Usually, acoustic metamaterials have …
the low-frequency noise and vibration control. Usually, acoustic metamaterials have …
Buckling strength topology optimization of 2D periodic materials based on linearized bifurcation analysis
Low density cellular materials may offer excellent mechanical properties and find wide
applicability in lightweight design and infill structures for additive manufacturing, yet …
applicability in lightweight design and infill structures for additive manufacturing, yet …
Homogenization-based constitutive models for magnetorheological elastomers at finite strain
PP Castañeda, E Galipeau - Journal of the Mechanics and Physics of Solids, 2011 - Elsevier
This paper proposes a new homogenization framework for magnetoelastic composites
accounting for the effect of magnetic dipole interactions, as well as finite strains. In addition …
accounting for the effect of magnetic dipole interactions, as well as finite strains. In addition …
Instabilities in multilayered soft dielectrics
K Bertoldi, M Gei - Journal of the Mechanics and Physics of Solids, 2011 - Elsevier
Experimental observations clearly show that the performance of dielectric elastomeric-based
devices can be considerably improved using composite materials. A critical issue in the …
devices can be considerably improved using composite materials. A critical issue in the …
Relating pore shape to the non-linear response of periodic elastomeric structures
JTB Overvelde, K Bertoldi - Journal of the Mechanics and Physics of Solids, 2014 - Elsevier
By introducing a periodic array of pores in an elastic matrix, instabilities with wavelengths
that are of the order of the size of the microstructure can be triggered. Interestingly, these …
that are of the order of the size of the microstructure can be triggered. Interestingly, these …