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用不同的附着位置过度处理对用清晰对齐器增强尾 anchorage的影响:一个有限元分析研究研究

Shiyu Wang1, Yangyang Huang1, Dian Fan1

  • 1School of stomatology, Xuzhou Medical University, 221000, Xuzhou, China.

BMC oral health
|September 25, 2023
PubMed
概括

使用透明对齐器附件过度处理可以在提取的情况下增强尾 anchorage. 与其他位置相比,口腔 - 部部位 (BPA) 位置提供了更好的控制,并减少了不良影响.

关键词:
附着物 附着物 附着物清晰的对齐器 清晰的对齐器提取案例 提取案件有限元素分析的研究.过度治疗 过度治疗

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Stress Concentrations01:24

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Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller width...
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Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
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Residual Stresses in Circular Shafts

In materials that exhibit elastic and plastic behavior, known as elastoplastic materials, residual stresses can accumulate when these materials experience plastic deformation. This deformation arises from either high levels of shearing stress or significant strains. Residual stresses are internal stresses that persist within a material after removing the external force causing deformation. This phenomenon is demonstrated when observing the behavior of a shaft under torque; notably, the shaft's...