在增材制造的背包枕头上进行机械和热调节研究
Niko Nagengast1, Yehuda Weizman1, Michael Frisch1
1Chair of Biomechanics, Faculty of Engineering Science, University of Bayreuth, D-95447 Bayreuth, Germany.
Polymers
|April 28, 2025
概括
附加制造的背包增强了体力活动期间的温度调节和舒适性. 这些定制的格子结构优于传统的子,为运动员在苛刻的环境中提供个性化的解决方案.
科学领域:
- 生物力学 生物力学
- 材料科学 材料科学 材料科学
- 运动工程 运动工程
背景情况:
- 背包枕对于舒适性和体育活动中的表现至关重要,特别是在像山地运动这样的苛刻环境中.
- 有效的温度调节和压力分配是必不可少的,因为运动员的背部和背包之间的直接相互作用.
- 背包作为关键的接口,影响热量和湿度管理.
研究的目的:
- 为了研究背包的机械和温度调节特性.
- 为了比较一个商业板与五个增材制造的格子结构.
- 评估设计对运动员舒适性和表现的影响.
主要方法:
- 利用增材制造 (大容量丝印,多喷射融合,高速激光烧结,激光烧结) 来制造网格.
- 使用标准化的机械,表面粗度和湿度测试来评估子.
- 开发了一个传感器系统 (压力,湿度,温度) 并使用热成像进行生物机械测试.
- 对20名男性运动员进行了跑步机测试,他们携带了一个8公斤的背包.
主要成果:
- 观察到运动员在温度和湿度管理方面对特定的配置有显著的偏好.
- 标准化测试证实了有关温度调节和吸收水分的发现.
- 定制传感器数据表明,缓冲改进后板设计的关键性低于板材料和结构.
- 增材制造使个性化的背包包设计能够具有改进的热性能.
结论:
- 与传统设计相比,增材制造的背包提供了优越的温度调节和舒适性.
- 通过增材制造进行个性化设计,可以显著提高运动员在体力苛刻的活动中的体验.
- 未来的研究可以专注于针对特定用户需求和活动优化格子结构.
相关概念视频
Mechanisms of Heat Transfer I
5.8K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
5.8K
Mechanisms of Heat Transfer II
4.5K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
4.5K
Thermal expansion and Thermal stress: Problem Solving
2.2K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
2.2K


