異なる走行強度下での乳房の動的応答:代表的な乳房タイプを対象とした有限要素法によるパイロットスタディ
Jie Yu1, Yue Sun1,2,3, Shichen Zhang3,4
1School of Fashion Design and Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, P. R. China.
Computer methods in biomechanics and biomedical engineering
|February 27, 2026
まとめ
乳房のサイズと走行速度は、運動中の乳房の動きと加速度に大きく影響する。これらの生体力学的洞察は、多様な乳房タイプに対応するサポート力のあるスポーツブラのデザインに役立つ可能性がある。
科学分野:
- 生体力学
- スポーツ科学
- 生体医工学
背景:
- 動的な乳房応答の理解は、運動能力と傷害予防にとって重要である。
- 既存の研究では、様々な乳房形態や運動学的パラメータの詳細な分析がしばしば不足している。
研究 の 目的:
- 動的活動中の異なるタイプの乳房の生体力学的応答を調査すること。
- 乳房の体積、走行速度、および乳頭の構成が乳房の運動に与える影響を定量化すること。
主な方法:
- 有限要素法(FEM)シミュレーションが採用された。
- 9つの代表的な乳房タイプがモデル化された。
- 変位や加速度を含む動的応答が分析された。
主要な成果:
- 乳房の体積と走行速度の増加は、乳房の変位と加速度を著しく増加させた(p < 0.001)。
- 乳房の体積と速度は、Y方向およびZ方向の運動の主要な予測因子であった。
- 乳頭の空間的構成は、乳房の横方向の動態に影響を与え、中間タイプの乳房は安定性が向上した。
結論:
- 乳房の動きは、体積と速度によって著しく影響を受けるため、個別化されたサポートの必要性が強調される。
- 乳頭の位置は、乳房の横方向の動きを調節する役割を果たす。
- 本研究の結果は、様々な乳房の形状やサイズに最適化されたスポーツブラを開発するための生体力学的基盤を提供する。
関連する概念動画
Deformation of Member under Multiple Loadings
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
Bending of Members Made of Several Materials
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 material's...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Plastic Deformations of Members with a Single Plane of Symmetry
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
Determination of Pi Terms
The Buckingham Pi theorem is a valuable method in dimensional analysis, reducing complex relationships between variables into dimensionless terms. Relevant variables in analyzing the lift force on an airplane wing include lift force, air density, wing area, aircraft velocity, and air viscosity. Expressing each variable in terms of fundamental dimensions — mass, length, and time — provides a consistent foundation for constructing these dimensionless terms.
The theorem indicates that the number...
The theorem indicates that the number...
Typical Model Studies
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.


