在不同角度和力大小的下外气泡 anchorage 的应力分布: 一个有限元素研究研究
E V Arango-Piloneta1, S P Plaza-Ruiz1, D F León-Lara2
1Orthodontic Department, Fundación Universitaria CIEO-UniCIEO, Bogotá, Colombia.
Computer methods in biomechanics and biomedical engineering
|August 30, 2023
概括
这项研究使用有限元分析分析了下中额外气泡螺丝 (EA-S) 的应力. 倾斜螺丝对水平力增强稳定性,减少骨压力.
科学领域:
- 生物材料工程 生物材料工程
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物力学 生物力学
背景情况:
- 额外气泡螺丝 (EA-S) 在正牙科中用于定.
- 了解应力分布对于优化EA-S设计和放置至关重要.
- 下的逆口腔区域对于螺丝插入具有独特的解剖学挑战.
研究的目的:
- 为了评估皮质骨,骨和不钢外气泡螺丝 (EA-S) 中的应力分布.
- 在不同的角度和力类型 (轴和剪切) 下分析应力模式.
- 为了确定最佳的螺丝角,以增强后区域的稳定性.
主要方法:
- 使用了有限元法 (FEM) 模拟.
- 分析了EA-S内和周围下骨 (皮质和状) 的压力分布.
- 模拟考虑了不同的螺丝插入角度 (60°和90°) 和力应用 (水平/剪切和轴).
主要成果:
- 在EA-S中最大的应力发生在与水平 (剪切) 力的60°角度.
- 观察到EA-S内部的最小应力与轴向力在90°的角度.
- 在下骨 (皮质和状) 中,最高的应力是以90°的角度与水平力记录的.
结论:
- 螺丝角度显著影响螺丝和下骨的应力分布.
- 与施加的力相对倾斜EA-S可以提高螺丝的稳定性,特别是在水平负荷下.
- 这些发现为优化EA-S在逆口区域的放置提供了生物力学见解.
更多相关视频
相关概念视频
Stress: General Loading Conditions
333
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
333
Flexural Stress
326
When analyzing bending in symmetric members, it's crucial to understand how stresses distribute when subjected to bending moments. This stress distribution is effectively described by applying fundamental mechanics and material science principles, particularly Hooke's Law for elastic materials.
Hooke's Law states that within the material's elastic limits, stress is directly proportional to strain. In a member experiencing a bending moment, the strain at any point is relative to...
Hooke's Law states that within the material's elastic limits, stress is directly proportional to strain. In a member experiencing a bending moment, the strain at any point is relative to...
326
Transformation of Plane Stress
255
Studying stress transformation is essential in understanding how stress components within a material, like a cube under plane stress, change with rotation. This change is analyzed by considering a prismatic element within the cube. As the element rotates, the stress components acting on it—both normal and shearing stresses—change in magnitude and orientation. This change is quantified using trigonometric functions of the rotation angle, relating the forces acting on the rotated element's...
255
Components of Stress
240
Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
Interestingly, the hidden cube faces also experience these stresses, equal and...
Interestingly, the hidden cube faces also experience these stresses, equal and...
240
Stress on an Oblique Plane
619
Understanding stress on an oblique plane under axial loading is pivotal in material mechanics. This analysis offers insight into a material's durability and strength, which is crucial for civil engineering and structural design. Axial loading refers to force application along the material's central axis, causing compression or elongation and leading to normal stress. Normal stress occurs when a force acts perpendicularly to the material's area, resulting in compressive or tensile...
619
Stresses under Combined Loadings
173
When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
173


