Results 41 to 50 of about 14,542 (232)
Journal of Applied Polymer Science, EarlyView.Cooling holes provide a simple passive cooling strategy for polymer spur gears, reducing maximum operating temperature by up to 9.39% while introducing a measurable gear mesh stiffness penalty. A validated response‐surface model reveals how hole size and location govern this thermal–mechanical trade‐off, enabling design optimization for thermally and ...
Abderrahim Baccar +5 more
wiley +1 more source
The 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
Research of the Effect of Profile Deviation on Contact Characteristic of Helical Gear
Jixie chuandong, 2015 In order to study the influence of profile deviations on the contact characteristic of the helical gear,the involutes equation containing the profile form deviation and profile slope deviation is deduced.On the meanwhile,a finite element model containing
Luo Tao, Qin Xunpeng, Huang Jinjing
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Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)
The Anatomical Record, EarlyView.Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto +3 more
wiley +1 more source
Analysis and Approximate Replacement of Tool for Trapezoid Spline Shaft
Jixie chuandong, 2022 The trapezoid spline has the characteristics of good guidance and self-centering， and its application range has been extended to the field of low-speed and high-torque transmission.
Zhigang Cao +8 more
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An osteohistological analysis of Triceratops (Ornithischia: Ceratopsidae) cranial ornamentation
The 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
Jixie chuandong, 2010 Based on the theory of gearing mesh,a rack-shaped-edge probe was used in the comprehensive on-line measurement for straight generatrix deviation. By measuring the deviation of each straight generatrix on tooth profile to determine the measurement grid ...
金嘉琦, 周秀文
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Rethinking brachycephaly: Anatomical implications and health considerations in lagomorphs
The Anatomical Record, EarlyView.Abstract Brachycephaly in domestic rabbits is increasingly perceived by welfare organizations as associated with significant health complications, particularly oral pathologies. Despite this perception, comparative anatomical research into rabbit brachycephaly is limited compared to that of dogs and cats, compelling an in‐depth examination of its ...
Helaina Cressy +3 more
wiley +1 more source
The Anatomical Record, EarlyView.Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom +4 more
wiley +1 more source
RESEARCH ON THE FATIGUE PERFORMANCE OF HELICAL GEAR PAIR BASED ON LOAD SPECTRUM
Jixie qiangdu, 2017 The 3D contact finite element model of helical gear pair is built to generate mode neutral file by ANSYS,the flexible dynamics simulation anslysis is carried out by using ADAMS,and contact force of helical gear pair is obtained as load spectrum.
ZHANG YanJie +2 more
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