Low-speed and heavy-load gears generate a lot of heat during meshing transmission, which leads to thermal deformation the affects transmission performance gear system. It is great significance explore influence law temperature effects on nonlinear dynamics Based principle deformation, taking into account effect parameters, including time-varying stiffness, tooth side clearance as well comprehen...

Geometrically structured interfaces in nature possess enhanced, and often surprising, mechanical properties, and provide inspiration for materials design. This paper investigates the mechanics of deformation and failure mechanisms of suture interface designs through analytical models and experiments on 3D printed polymer physical prototypes. Suture waveforms with generalized trapezoidal geometr...

Cervical restoration of a premolar tooth is challenging task as it involves structural modification to ensure the functional integrity tooth. The lack retention in cervical area, with cavity margins on dentin and nonavailability enamel, makes for restoration. high organic content dentin, along its tubular structure outward flow fluid, make bonding difficult attain. objective this study evaluate...

primary tooth impaction is a rare finding during the development of primary dentition. several factors contribute to the impaction of a deciduous tooth. this report describes the diagnosis and treatment of a 10-year-old boy who presented an impacted second primary mandibular molar. this tooth, located inferior to the second premolar together with an odontoma, was positioned superior to the prem...

To solve the problem of low efficiency in digital generating machining for producing small or medium batches helical gears, a method to improve with an indexable disk milling cutter is presented this paper. First, mathematical model tooth profile and are established. Second, according spatial free-form envelope theory, overall planning scheme tool path given; relative position transformation ma...

Conodonts are the first vertebrates to bear a mineralized skeleton, restricted to an array of tooth-like feeding elements. The functional implications for the development of tooth-like elements differentiated into two tissues is tested using 2D finite element modeling, mapping the patterns of stress and strain that elements with differing material properties exhibited during function. Addition ...

A system of two meshing gears exhibits a stiffness that varies with the number of teeth in instantaneous contact and the location of the corresponding contact points. A classical Newtonian statement of the equations of motion leads to a solution that contradicts the fundamental principle of mechanics that the change in total energy in the system is equal to the work done by the external forces,...