Results 321 to 330 of about 1,723,107 (335)

Fast‐Response, Stiffness‐Tunable Soft Actuator by Hybrid Multimaterial 3D Printing

Advanced Functional Materials, 2019
Soft robots have the appealing advantages of being highly flexible and adaptive to complex environments. However, the low‐stiffness nature of the constituent materials makes soft robotic systems incompetent in tasks requiring relatively high load ...
Yuan-Fang Zhang, Ningbin Zhang, H. Hingorani, Ningyuan Ding, Dong Wang, Chao Yuan, Biao Zhang, Guoying Gu, Qi Ge   +8 more
semanticscholar   +1 more source

Extracellular matrix (ECM) stiffness and degradation as cancer drivers

Journal of Cellular Biochemistry, 2018
Alteration in the density and composition of extracellular matrix (ECM) occurs in tumors. The alterations toward both stiffness and degradation are contributed to tumor growth and progression.
M. Najafi, Bagher Farhood, K. Mortezaee
semanticscholar   +1 more source

3D Plate‐Lattices: An Emerging Class of Low‐Density Metamaterial Exhibiting Optimal Isotropic Stiffness

Advances in Materials, 2018
In lightweight engineering, there is a constant quest for low‐density materials featuring high mass‐specific stiffness and strength. Additively‐manufactured metamaterials are particularly promising candidates as the controlled introduction of porosity ...
T. Tancogne-Dejean, M. Diamantopoulou, M. Gorji, C. Bonatti, D. Mohr   +4 more
semanticscholar   +1 more source

An improved analytical model for gear mesh stiffness calculation

, 2021
Time-varying mesh stiffness is considered the primary excitation in gear vibrations. An accurate evaluation of mesh stiffness is of great importance when studying gear vibrations.
He Dai, X. Long, Feng Chen, Chao Xun
semanticscholar   +1 more source

Design and numerical validation of quasi-zero-stiffness metamaterials for very low-frequency band gaps

, 2020
A novel one-dimensional quasi-zero-stiffness (QZS) metamaterial is proposed to acquire very low-frequency band gaps. The representative unit cell (RUC) of the QZS metamaterials is constructed by combining positive-stiffness (PS) elements (two pairs of ...
Changqi Cai, Jiaxi Zhou, Linchao Wu, Kai Wang, Daolin Xu, H. Ouyang   +5 more
semanticscholar   +1 more source

Material stiffness influences the polarization state, function and migration mode of macrophages.

Acta Biomaterialia, 2019
Biomaterial implantation is followed by an inflammatory cascade dominated by macrophages, which determine implant acceptance or rejection through pro- and anti-inflammatory polarization states (Anderson et al., 2008; Brown and Badylak, 2013). It is known
Rukmani Sridharan, B. Cavanagh, A. Cameron, D. Kelly, F. O'Brien   +4 more
semanticscholar   +1 more source

Negative stiffness devices for vibration isolation applications: A review

, 2020
In recent years, negative stiffness vibration isolation device with nonlinear characteristic has become an emerging research area and attracted a significant amount of attentions in the community due to the promising potentials it brought into the field.
Huan Li, Yancheng Li, Jianchun Li
semanticscholar   +1 more source

Nonlinear vibration isolation for fluid-conveying pipes using quasi-zero stiffness characteristics

Mechanical systems and signal processing, 2019
Fluid-conveying pipes are always subjected to various excitations to cause unwanted vibrations. A quasi-zero stiffness system consisting of three linear springs is adopted as the nonlinear isolator to attenuate the transverse vibrations of fluid ...
H. Ding, J. Ji, Liqun Chen
semanticscholar   +1 more source

Vibration response and fault characteristics analysis of gear based on time-varying mesh stiffness

, 2020
Gears are prone to failures, which are difficult to detect in the early stage. In this study, the time-varying mesh stiffness of gears teeth with different crack lengths is calculated, and the effects of spalling with different widths, lengths, and ...
Zong Meng, Guixia Shi, Fulin Wang
semanticscholar   +1 more source

The stiffness of living tissues and its implications for tissue engineering

Nature Reviews Materials, 2020
Carlos F. Guimarães, L. Gasperini, A. Marques, R. Reis   +3 more
semanticscholar   +1 more source