Abstract Materials and structures based on pantographic cells exhibit interesting mechanical peculiarities. They have been studied prevalently in the static case, both linear nonlinear regime. When dynamical behavior is considered, available literature scarce probably for intrinsic difficulties solution of this kind problems. The aim work to contribute filling gap by addressing response beams. ...

Pneumatic Artificial Muscle (PAM) actuator has been widely used in medical and rehabilitation robots, owing to its high power-to-weight ratio and inherent safety characteristics. However, the PAM exhibits highly non-linear and time variant behavior, due to compressibility of air, use of elastic-viscous material as core tube and pantographic motion of the PAM outer sheath. It is difficult to obt...

The derivation by variational asymptotic homogenization of a 2D-continuum model describing large elastic planar deformations discrete bi-pantographic structure is presented. A rectangular specimen was additively manufactured and subjected to bias extension test for macroscopic strains up ca. 40%. the sample were measured via FE-based digital image correlation. Measured boundary conditions then ...

We postulate a deformation energy for describing the mechanical behavior of so called pantographic blocks, that is bodies constituted by stacking N layers sheets. remark effect limited in plane sheets and therefore only second derivatives transverse displacements along fibers appear chosen energy. use this novel to predict blocks when subjected : (i) compression traction test, (ii) torsion, (ii...