接口失败和Young的模块通过有限元素方法对多层柔性设备的近似计算
Julet Méndez-Hernández1, Mariely Loeza-Poot1, Agustín Vidal-Lesso1
1Universidad de Guanajuato, Departamento de Ingeniería Mecánica, carretera Salamanca - Valle de Santiago km 3.5 + 1.8, Comunidad de Palo Blanco, C.P. 36885, Salamanca, Guanajuato, Mexico.
Heliyon
|February 20, 2024
概括
这项研究研究了有机柔性太阳能电池 (OFSC) 在变形下的机械行为. 研究人员发现,氧化 (ITO) 层最容易发生故障,导致设备损坏.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 固态物理 固态物理
背景情况:
- 由于机械应力,电子灵活设备的性能下降.
- 脆性骨折是层层的柔性设备中常见的故障模式,由不匹配的材料特性引起.
研究的目的:
- 在单轴变形下研究具有特定异构结构 (PET/ITO/P3HT:PCBM/Ag) 的有机柔性太阳能电池 (OFSC) 的机械行为.
- 开发和验证一个数值模型,用于预测OFSC中的机械损伤.
主要方法:
- 在单轴位移下对OFSC变形的实验分析.
- 开发一个数值模型来模拟力,位移和应变能量消散.
- 通过比较实验和模拟的模量来验证数值模型.
主要成果:
- 在印度氧化 (ITO) 层和 ITO/P3HT:PCBM 接口的分层中实验观察网格裂纹图案.
- 数字模型确定ITO层具有最高的应变能量消散,并且最容易发生故障.
- 验证了实验和数值的模值 (分别为4.16 ± 0.05 GPa和4.36 ± 0.15 GPa).
结论:
- 数值模型准确地预测了在单轴变形下OFSC的机械行为和故障模式.
- ITO层是研究的OFSC异构结构中易发生故障的关键组件.
- 该模型通过预测和减轻机械损坏,成为设计更强大的灵活设备的宝贵工具.
更多相关视频
相关概念视频
Bending of Members Made of Several Materials
149
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...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
149
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
267
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.
267
Hooke's Law
388
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.
388
Indeterminate Structure
536
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static equilibrium. Indeterminate structures have more unknown forces and reaction forces than equations of static equilibrium that can be used to determine them. Indeterminate structures are often used in engineering to create complex, efficient, and aesthetically pleasing structures. There are various types of indeterminate structures used in engineering and...
536
Members Made of Elastoplastic Material
98
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...
98
Flexural Stress
247
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...
247


