Results 41 to 50 of about 55,331 (264)

Simulation and Analysis on Tooth Meshing Ease-Off Surface of Gears Based on Polynomial Topology Modification

open access: yesXibei Gongye Daxue Xuebao, 2020
Based on the principles of common-generating conjugation mapping of pinion-rank-gear meshing, the constructing of ease-off surface has been done by means of the topology modification of the 4-order polynomial surface.

doaj   +1 more source

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

open access: yesThe Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Tooth surface mismatch design of cycloidal bevel gear based on two directions modification of pinion cutter

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing
Aiming at the sensitivity of installation errors caused by the complete conjugated tooth surface of cycloidal bevel gear, a method of tooth surface mismatch design which only modified the pinion cutter along two directions was proposed.
Shaowu NIE, Jinyu CHEN, Zhengyang HAN
doaj   +1 more source

Neuroanatomical diversity in Teleocichla with new volumetric and histological insights into the encephalon of Teleocichla monogramma Kullander 1988

open access: yesThe Anatomical Record, EarlyView.
Abstract Teleocichla comprises small cichlids that inhabit the rapid streams of Amazonian rivers; however, there has been limited research on their encephalon morphology. This study examined the neuroanatomy of four species, focusing on volumetric measurements of their encephalon subregions, and providing a histological description of the encephalon of
Renan Leão‐Reis   +4 more
wiley   +1 more source

Accurate Finite Element Modeling Method of Herringbone Gear based on Multipoint Constraint Method

open access: yesJixie chuandong, 2022
A sufficiently refined mesh at the stress position is the basis for finite element analysis of gears to obtain accurate tooth surface contact stress and tooth root bending stress.
Guanwang Geng, Wei Liu, Qingsong Zhang
doaj  

The skeleton of the green Iguana iguana (Squamata: Iguanidae) and its intraspecific morphological variation

open access: yesThe Anatomical Record, EarlyView.
Abstract The green iguana (Iguana iguana) is an iguanine lizard with herbivorous and arboreal habits, whose distribution spans through South America, Central America to the south of North America. Although the genus Iguana is well‐known, the species still lacks a comprehensive and up‐to‐date anatomical study, particularly addressing the axial skeleton,
Vieno Rosa   +2 more
wiley   +1 more source

The Tooth Contact Analysis of a Heavy-load Planetary Gearing [PDF]

open access: yesProceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering, 2015
Keywords: Planetary gearing; Tooth contact analysis; Modal analysis; ANSYS Abstract. This paper presents a method for analyzing the tooth contact situations of a heavy-load planetary gearing based on Ansys Workbench. Firstly, a 3D finite element model of the whole gearing is established with 10 node tetrahedron elements.
openaire   +1 more source

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato   +4 more
wiley   +1 more source

An osteohistological analysis of Triceratops (Ornithischia: Ceratopsidae) cranial ornamentation

open access: yesThe Anatomical Record, EarlyView.
Abstract Ceratopsids are among the most distinctive and well known extinct Cretaceous vertebrates, yet many details regarding the growth and composition of their cranial features are still not fully anatomically described or understood. In particular, striking cranial adornments such as the postorbital horns and parietal‐squamosal frill of Triceratops ...
Kyle D. Obuszewski   +2 more
wiley   +1 more source

Mathematic design and computer analysis of curve-surface conjugated face gear pair

open access: yesAdvances in Mechanical Engineering
The mathematic model and computer analysis model of curve-surface conjugated face gear pair are developed on the basis of the principle of differential geometry.
Jun Wang   +3 more
doaj   +1 more source

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