Elastic strain engineering for ultralow mechanical dissipation

Engineering mechanical dissipation in solid poly ( ethylene glycol ) hydrogels

Growing evidence supports that the unique mechanical behavior of mussel byssal threads, such as high toughness and self-healing, rely on an intricate balance of permanent covalent and reversible metal coordination bonds. Inspired by this material crosslink chemistry balance, we synthesized polyethylene glycol (PEG) hydrogels with two crosslinked networks; a primary permanent network composed of...

Tunable thermoelectric transport in nanomeshes via elastic strain engineering

Mechanical Dissipation in Silicon Flexures

The search for gravitational radiation remains one of the most challenging problems faced by experimental physicists at this present time. One of the most significant limits to the sensitivity of current and planned long-baseline gravitational wave detectors is thermal displacement noise in their test masses and suspensions. Future detectors with higher sensitivities will require optics with bo...

Anisotropic hyper-elastic material model for the mechanical behaviour of cloth using polyconvex strain energy function

The present study addresses the constitutive model of cloth using anisotropic hyperelastic materials and its implementation into a nonlinear finite shell element in order to simulate large deformation behavior of cloth. Present work focuses on a macroscopic continuum constitutive model able to capture the appropriate mechanical behavior of cloth, which is characterized by two families of yarns,...

Strain Elastic-plastic Theories

In a unified approach, the virtual work equations in rate form and in incremental forms are derived rigorously for elastic-plastic continuum subjected to large strains. T h e finite element p r d u r e s for the analyses of clastic-plastic solid b a d on Lee’s theory and the Green-Naghdi theory arc presented. Also, i t i s shown that transformations can be performed among the Eulerian, the Tota...