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相关概念视频

Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

152
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
152
Method of Superposition01:20

Method of Superposition

860
The method of superposition is a crucial technique in structural engineering, used to analyze the effect of multiple loads on beams. This approach involves calculating the deflection and slope for each load on a beam separately, and then summing these effects to determine the overall impact. It is applicable only when the beam material remains within its elastic limit, ensuring that deformations are linearly elastic.
When applying the method of superposition, each type of load—whether...
860
Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

98
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
98

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A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
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一个参数的有限元分析,用于功能分级的材料覆盖层恢复.

Vincent Fouquet1, Nicoline Larsen2, Anne-Constance Stchepinsky2

  • 1Université Paris Cité, Université Sorbonne Paris Nord, URB2i, F-92120, Montrouge, France; Université Sorbonne Paris Nord, F-93430, Villetaneuse, France; AP-HP, Louis-Mourier Hospital, Oral Medecine Department, F-92700, Colombes, France.

Journal of the mechanical behavior of biomedical materials
|January 26, 2024
PubMed
概括

功能分级材料 (FGM) 可以通过减少压力来防止陶恢复失败. 优化具有特定材料特性的5层FGM显著提高了假肢的耐用性.

关键词:
担保恢复恢复的担保.有限元素分析的研究.具有功能分级的材料具有功能分级的材料玻璃陶是玻璃陶的产品之一.

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科学领域:

  • 生物材料工程 生物材料工程
  • 牙科材料科学 牙科材料科学
  • 机械工程 机械工程

背景情况:

  • 粘合陶修复通常由于应力度引起的材料断裂而失败.
  • 功能分级材料 (FGM) 提供了一种潜在的解决方案,用于消除牙假肢中的机械应力.

研究的目的:

  • 使用有限元分析优化多层FGM用于覆盖假肢的基础.
  • 研究层数,厚度和材料特性对应力分布的影响.

主要方法:

  • 采用了有限元分析的完整因数设计.
  • FGM层的数量和厚度在陶塑造工艺限制范围内有所变化.
  • 的模块在牙组织的范围内进行调整.

主要成果:

  • 一个1.5毫米厚的假肢的最佳FGM配置被确定为5层,每个0.2毫米厚.
  • 从30到70GPa的扬模块的线性分布被发现是最优的.
  • 这种最佳配置在修复牙的3D模型中得到了验证.

结论:

  • 具有优化性能的5层FGM可以有效地减少陶修复底部的应力度.
  • 这种优化的FGM设计代表了提高粘合陶假肢寿命的重大进步.
  • 该研究验证了在牙科应用中使用量身定制的FGM的概念验证.