Origami-inspired structures have a rich design space, offering new opportunities for the development of deployable systems that undergo large and complex yet predictable shape transformations. There has been growing interest in such structural can extend uniaxially into tubes booms. The Kresling origami pattern, which arises from twist buckling thin cylinder exhibit multistability, offers great potential this purpose. However, much remains to be understood regarding characteristics...

Abstract Origami has great potential for creating deployable structures, however, most studies have focused on their static or kinematic features, while the complex and yet important dynamic behaviors of origami deployment process remained largely unexplored. In this research, we construct a model Miura sheet that captures combined panel inertial flexibility effects, which are otherwise ignored in rigid folding models but critical describing dynamics deployment. Results show by considering...

The remarkable versatility and adaptability of skeletal muscle that arises from the assembly its nanoscale cross-bridges into micro-scale assemblies known as sarcomeres provides great inspiration for development advanced adaptive structures material systems. Motivated by capability to capture elastic strain energy improve energetic efficiency sudden movements repeated motions, models cross-bridge power stroke motions sarcomere contractile behaviors incorporate asymmetric, bistable potential...

Recent studies have demonstrated that the energetic vibrations of strategically designed negative stiffness inclusions may lead to large and adaptable damping in structural/material systems. Many researchers examine these features using models bistable elements. From viewpoint system integration, bistable, elements often interface with positive elastic members. Under such conditions, exhibit coexisting metastable states. In other words, macroscopic displacement/strain remains fixed while...

The passive attributes of skeletal muscle "material" often have origins in nanoscale architecture and functionality where geometric frustrations directly influence macroscale mechanical properties. Drawing from concepts the actomyosin network, this study investigates a modular, architected material system that leverages spatial constraints to generate multiple stable topologies yield large adaptability By exploiting shearing actions induced on an actomyosin-inspired assembly modular...

Abstract Origami–inspired designs are being explored extensively for structural and material applications in a variety of different engineering fields because their attractive kinematic mechanical properties, design flexibility, multi-functionality. However, most if not all these studies have focused on translational motions. Utilizing origami replacing or enhancing torsional components, such as joints, shafts motors, has received little attention. With this mind, research introduces an...

Abstract Origami designs have attracted significant attention from researchers seeking to develop new types of deployable structures due their ability undergo large and complex yet predictable shape changes. The Kresling pattern, which is based on a natural accumulation folds creases during the twist-buckling thin-walled cylinder, offers great example for design systems that expand uniaxially into tubes or booms. However, much remains be understood regarding characteristics Kresling-based...

Online simulations conducted in vehicles can enable predictive control of automotive systems. This capability be especially valuable for complex propulsion systems to manage performance, safety, and efficiency under changing drive conditions. Reliable online require accurate models. However, modeling errors are unavoidable, the inputs from driver environment subject uncertainty generally unknown a priori, rendering system stochastic. Furthermore, limited computing resources vehicle prohibit...

Recent studies have demonstrated that the energetic vibrations of strategically designed negative stiffness inclusions may lead to large and adaptable damping in structural/material systems. Many researchers examine these features using models bistable elements. From viewpoint system integration, bistable, elements often interface with positive elastic members. Under such conditions, exhibit coexisting metastable states. In other words, macroscopic displacement/strain remains fixed while...

The remarkable energetic versatility and adaptability of skeletal muscle provides great inspiration to develop advanced adaptive structures materials. These notable properties may arise from the assembly muscle’s nanoscale cross-bridges into microscale known as sarcomeres. Essential understanding energetics has been developed models micro/nanoscale constituents which incorporate an intriguing, asymmetric, bistable potential energy landscape capture trends in experimental data on cross-bridge...

Skeletal muscle mechanics exhibit a range of noteworthy characteristics, providing great inspiration for the development advanced structural and material systems. These characteristics arise from synergies demonstrated between muscle's constituents across various length scales. From macroscale oblique orientation fibers to microscale lattice spacing sarcomeres, takes advantage geometries multidimensionality force generation or change along desired axis. Inspired by these behaviors, this...

Animal locomotion and movement requires energy, the elastic potential energy stored in skeletal muscle can facilitate movements that are otherwise energetically infeasible. A significant proportion of this is captured micro- nano-scale constituents near point instability between asymmetric equilibrium states. This may be quickly released to enable explosive macroscopic motions or reduce metabolic cost cyclic movements. Inspired by these behaviors, research explores modular metastructures...

Mechanical metamaterials can be designed to give rise exotic properties such as negative stiffness, Poisson's ratio (auxeticity), and tailorable buckling by selectively designing the geometry of host material. However, these behaviors are typically fixed cannot changed once metamaterial has been fabricated. Motivated goal post-manufactured application-specific adaptability, we present a soft mechanical with pressurized circular voids for in-situ tunable properties. Prototypes created curing...

This research investigates the effect of geometric parameters origami crease patterns on their deployment dynamics. In this study, we construct a dynamic model non-rigid Miura sheet based bar-and-hinge approach, capturing panel flexibility and inertial effects. These effects are critical in describing dynamics deployment, which ignored state art rigid folding kinematics model. Deployment is facilitated by strain energy stored torsional springs at hinged creases, controlled velocity one end...

Abstract Collaborative robots (Cobots) are designed to allow humans interact and work with them in close proximity. Although they power- force-limited compared traditional industrial robots, residual injury risks the event of a collision will cause Cobots be operated at reduced speed when nearby. This compromises ability achieve manufacturing cycle time targets. Outlining safe zones around may quicker operations, but this approach poses challenges efficiency leads an increased robot...