预测压力行为和感应性能弹性压力施加和感应织品压缩织品的织物
Yixuan Ma1, Tao Hua1, Yiyi Yang1
1Nanotechnology Center, School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong.
ACS applied materials & interfaces
|October 16, 2023
概括
研究人员开发了用于医疗压缩织品的压力感应面料. 有限元模型准确地预测了织物压力和电阻,而结构在智能织应用中表现出卓越的性能.
科学领域:
- 织工程 织工程 织工程
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
背景情况:
- 压缩织品对于医疗治疗至关重要,但缺乏集成的压力传感能力.
- 精确的压力测量对于有效的压缩疗法至关重要.
- 现有的织品不能同时施加和测量压力,阻碍了处理优化.
研究的目的:
- 从理论上探索新型压力感应织物中织物特性,施加压力和电阻之间的关系.
- 开发和验证有限元模型,用于预测压缩织品的压力和传感性能.
- 确定最佳的织物结构和参数,以提高压力预测和传感.
主要方法:
- 开发了弹性施压和感应压力的织物.
- 使用模拟施加压力的测试协议.
- 建立了两个有限元素 (FE) 模型:连续和不连续.
- 与实验压力和电阻测量相关的FE模拟.
- 研究了压头直径,缩因子和预压力的影响.
主要成果:
- FE模型准确地预测了织物压力行为,与实验数据有很好的一致性.
- 在织物应变和产生的压力之间观察到非线性关系.
- 建立了一个基于织物延伸和压力的电阻模型.
- 沙丁结构感应面料显示出更高的压力预测准确性和响应时间.
- 压头直径,缩因子和预压力显著影响了压力和阻力变化.
结论:
- 该研究提供了一个强大的理论框架,以了解压力感应织物机制.
- 有限元模型为设计和优化智能压缩织品提供了有价值的工具.
- 沙丁面料结构对医疗压缩服装中先进的压力传感应用具有前景.
相关概念视频
01:19Members Made of Elastoplastic Material
101
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...
As the bending moment...
101
01:20Elasticity in Concrete
98
Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear...
98
01:23Behavior of Concrete Under Compressive Load
183
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
As the concrete specimen fractures under...
183
01:21Plastic Behavior
200
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
200
01:12Elasticity
3.5K
Elasticity is the ability of an object to withstand the effects of distortion and to return to its original size and shape once the forces causing deformation are removed. When an elastic material deforms under the action of an external force, it experiences internal resistance to the deformation. However, if no external force is applied, it returns to its original state.
The elasticity of an object can be described by a stress-strain curve, which represents the relationship between stress...
The elasticity of an object can be described by a stress-strain curve, which represents the relationship between stress...
3.5K
01:26Hooke's Law
445
Hooke's law, a pivotal principle in material science, establishes that the strain a material undergoes is directly proportional to the applied stress, defined by a factor called the modulus of elasticity or Young's modulus.
445