肩部形态对在载荷时肩部压力分布的影响
Yanyang Dai1, Jian Li1, Wen Cui1
1College of Fashion and Design, Donghua University, Shanghai, China.
Ergonomics
|September 28, 2024
概括
肩形状显著影响在承载负载时压力如何分配. 了解这些差异可以帮助防止携带重物品的人的肩部受伤.
科学领域:
- 生物力学 生物力学
- 人体工程学就是人体工程学.
- 运动医学 运动医学
背景情况:
- 肩膀压力损伤是负载载的人群的一个担忧.
- 现有的预防策略可能无法考虑个体肩部形态.
研究的目的:
- 为了研究肩膀形态如何影响压力分布.
- 确定改善伤害预防的潜在目标.
主要方法:
- 用三维扫描将69名参与者分为四种肩部类型.
- 在28名参与者身上使用传感背心测量压力,他们携带15%的体重背包负荷.
主要成果:
- 肩膀表面的凸起导致压力集中,分布不均.
- 较满的肩部表面导致压力分散更加均.
结论:
- 肩部形态是载荷时压力分布的一个关键因素.
- 根据肩膀类型的定制预防策略对于负载型人群是必要的.
相关概念视频
Relation Between the Distributed Load and Shear
619
Understanding the relationship between the distributed load and shear force in structural analysis is crucial for analyzing beams subjected to various loading conditions. Consider the case of a beam experiencing a distributed load, two concentrated loads, and a couple moment.
619
Load along a Single Axis
287
In structural engineering, the analysis of beams subjected to varying loads is a critical aspect of understanding the behavior and performance of these structural elements. A common scenario involves a beam subjected to a combination of different load distributions.
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
287
Stress: General Loading Conditions
301
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....
301
Eccentric Axial Loading in a Plane of Symmetry
165
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
165
Distributed Loads
517
Distributed loads are a common type of load that engineers and scientists encounter in various practical situations. Distributed loads often refer to a type of load spread over a surface or a structure and can be modeled as continuous force per unit area.
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
517
Unsymmetric Loading of Thin-Walled Members
101
Thin-walled members with non-symmetrical cross-sections are vital to engineering structures, offering material efficiency and structural integrity. However, unsymmetrical loading on these members leads to complex stress distributions, resulting in simultaneous bending and twisting can cause deformation or structural failure. The interaction between bending and twisting requires detailed analysis to ensure structural resilience.
The concept of the shear center is crucial in countering the...
The concept of the shear center is crucial in countering the...
101


