Search Results - "Lakes, Roderic"

Negative-Poisson's-Ratio Materials: Auxetic Solids by Lakes, Roderic S

“…Poisson's ratio had long been considered to be an intrinsic material property, confined within a narrow domain and governed solely by the geometry of…”
Get full text

Strong re-entrant cellular structures with negative Poisson’s ratio by Li, Dong, Yin, Jianhua, Dong, Liang, Lakes, Roderic S.

“…In this paper, two new 2D re-entrant topologies with negative Poisson’s ratio are presented and their mechanical properties (Poisson’s ratio and energy…”
Get full text

Poisson's Ratio beyond the Classically Allowable Range in Chiral Isotropic Elastic Materials: Effect of k and Experiment by Lakes, Roderic S., Huey, Ballard

“…Poisson's ratio in chiral isotropic elastic solids can be larger or smaller than the classical thermodynamic bounds. The effect of Cosserat coupling constant k…”
Get full text

Cubic negative stiffness lattice structure for energy absorption: Numerical and experimental studies by Ha, Chan Soo, Lakes, Roderic S., Plesha, Michael E.

“…We present a new type of a truly three-dimensional cubic negative stiffness lattice structure that can achieve energy absorption and recover its original…”
Get full text

Third-rank piezoelectricity in isotropic chiral solids by Lakes, Roderic

“…The highest symmetry in which piezoelectricity was thought to occur is cubic. Here, it is shown that third rank piezoelectricity can occur in isotropic chiral…”
Get full text

Chiral three-dimensional isotropic lattices with negative Poisson's ratio by Ha, Chan Soo, Plesha, Michael E., Lakes, Roderic S.

“…Chiral three‐dimensional isotropic cubic lattices with rigid cubical nodules and multiple deformable ribs are developed and analyzed via finite element…”
Get full text

A unit cell structure with tunable Poisson's ratio from positive to negative by Li, Dong, Dong, Liang, Lakes, Roderic S.

“…A novel unit cell structure with re-entrant hollow skeleton was designed and its Poisson's ratio was studied using the finite element method (FEM) as a…”
Get full text

Experimental Cosserat elasticity in open-cell polymer foam by Rueger, Zach, Lakes, Roderic S.

“…Reticulated open-cell polymer foams exhibit substantial size effects in torsion and bending: slender specimens are more rigid than anticipated via classical…”
Get full text

Stiff, strong, zero thermal expansion lattices via material hierarchy by Lehman, Jeremy, Lakes, Roderic S

“…For engineering applications where tight dimensional tolerances are required, or for applications where materials are subjected to a wide range of temperatures…”
Get full text

Controllable thermal expansion of large magnitude in chiral negative Poisson's ratio lattices by Ha, Chan Soo, Hestekin, Eric, Li, Jianheng, Plesha, Michael E., Lakes, Roderic S.

“…Lattices of controlled thermal expansion are presented based on planar chiral lattice structure with Poisson's ratio approaching −1. Thermal expansion values…”
Get full text

Extended Poisson's Ratio Range in Chiral Isotropic Elastic Materials by Lakes, Roderic S., Huey, Ballard, Goyal, Karan

“…Poisson's ratio in chiral Cosserat elastic solids is considered. Chirality allows the Poisson's ratio to exceed classical bounds, even if the material is…”
Get full text

Nonclassical Thermal Twist of the Chiral Gyroid Lattice by DeValk, Tyler, Hestetune, Jonah, Lakes, Roderic S.

“…The gyroid lattice is prepared in chiral and non‐chiral forms. The chiral gyroid lattice is observed to exhibit temperature‐induced twist with the direction of…”
Get full text

Changes in large pulmonary arterial viscoelasticity in chronic pulmonary hypertension by Wang, Zhijie, Lakes, Roderic S, Golob, Mark, Eickhoff, Jens C, Chesler, Naomi C

“…Conduit pulmonary artery (PA) stiffening is characteristic of pulmonary arterial hypertension (PAH) and is an excellent predictor of mortality due to right…”
Get full text

Stiff square structure with a negative Poisson's ratio by Li, Dong, Ma, Jie, Dong, Liang, Lakes, Roderic S.

“…A novel 2D cellular structure achieved by alternating rectangular surface indents on the vertical ribs of the unit cells was designed. And the Poisson's ratios…”
Get full text

The properties of copper foams with negative Poisson's ratio via resonant ultrasound spectroscopy by Li, Dong, Dong, Liang, Lakes, Roderic S.

“…The Poisson's ratios of re‐entrant Cu foams with different initial relative densities were studied by resonant ultrasound spectroscopy (RUS). Slight anisotropy…”
Get full text

Three‐Dimensional Stiff Cellular Structures With Negative Poisson's Ratio by Li, Dong, Ma, Jie, Dong, Liang, Lakes, Roderic S.

“…In this paper, a novel three‐dimensional (3D) cellular structure with negative Poisson's ratio was designed by alternating cuboid surface indents on the…”
Get full text

Negative Poisson’s ratio in 2D Voronoi cellular solids by biaxial compression: a numerical study by Li, Dong, Dong, Liang, Yin, Jianhua, Lakes, Roderic S.

“…A 2D (two-dimensional) random cellular solid model was built using FEM (finite element method) based on a modified Voronoi tessellation technique. A sequence…”
Get full text

Relationship between tendon stiffness and failure: a metaanalysis by LaCroix, Andrew S, Duenwald-Kuehl, Sarah E, Lakes, Roderic S, Vanderby, Jr, Ray

“…Tendon is a highly specialized, hierarchical tissue designed to transfer forces from muscle to bone; complex viscoelastic and anisotropic behaviors have been…”
Get full text

Observation of Squeeze–Twist Coupling in a Chiral 3D Isotropic Lattice by Li, Jianheng, Ha, Chan Soo, Lakes, Roderic S.

“…A chiral 3D lattice is designed, made by 3D printing, and studied experimentally. The lattice exhibits squeeze–twist coupling and a Poisson's ratio near zero…”
Get full text

Flexible Cube Tilt Lattice with Anisotropic Cosserat Effects and Negative Poisson's Ratio by Rueger, Zach, Ha, Chan Soo, Lakes, Roderic S.

“…A 3D lattice structure consisting of pivoting cubes with flexible links at the corners is presented. It exhibits anisotropic negative Poisson's ratio −0.54 and…”
Get full text