The continuously variable transmission (CVT) is a type of transmission that can adopt any arbitrary gear ratio. Whereas typical transmissions utilize toothed gears, the CVT employs a sphere in rolling contact with a set of rollers; loads applied to the CVT are supported across these rolling contacts, resulting in microslips of varying amounts at each contact area. In this paper, we describe the...

Direct numerical simulations are performed to investigate the interaction between a stably stratified jet and internal gravity waves from an adjacent shear layer with mild stratification. Results from two simulations are presented: one with the jet located far from the shear layer (far jet) and the other with the shear layer right on top of the jet (near jet). The near jet problem is motivated ...

Members of two species complexes in the family Crambidae feed on ornamental and medicinal plants of the genus Erythrina (Fabaceae), commonly known as coral beans and/or coral trees, in tropical and subtropical regions worldwide. Erythrina leaf-rollers (genus Agathodes) and erythrina borers (genus Terastia), although different ecologically and phenotypically, are sister genera. Each is represent...

The design of a mechanical transmission taking into account the transmitted forces is reported in this paper. This transmission is based on Slide-o-Cam, a cam mechanism with multiple rollers mounted on a common translating follower. The design of Slide-o-Cam, a transmission intended to produce a sliding motion from a turning drive, or vice versa, was reported elsewhere. This transmission provid...

In the production of pipes from corrosion-resistant steels on pipe rolling plants, current problem is low stability tool. Therefore, creation high-performance and durable tools associated primarily with processing materials that could withstand harsh working conditions. The technology heat hardening tool for cold roller (rollers support laths HPTR mills) 4Х5МФ1С steel which excludes third holid...

Abstract Active particles, such as swimming bacteria or self-propelled colloids, spontaneously assemble into large-scale dynamic structures. Geometric boundaries often enforce different spatio-temporal patterns compared to unconfined environment and thus provide a platform control the behavior of active matter. Here, we report collective dynamics particles enclosed by soft, deformable boundary,...

In the process of steel bar straightening processing, rollers are often damaged by fatigue due to uneven force, which causes frequent replacement rollers. Therefore, structural parameters optimization machine is very important improve machining accuracy and prolong service life roller. this paper, an method based on particle swarm (PSO) algorithm was proposed used optimize machine. First, main ...

If plastic tubing is to be used in roller pumps for propelling blood in extracorporeal circulations under occlusive conditions spring loading the rollers and accurately setting the spring force is essential. Various types and sizes of plastic tubing are compared and their performance estimated; rubber tubing used for the same purpose has been tested. The optimum spring force has been determined...