超声波接单环接头的形态特征和故障分析
Quanyue Zhao1, Hantai Wu1, Xinyu Chen1
1Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China.
Polymers
|September 9, 2023
概括
热塑性复合材料的超声波接表明,高振幅和低力提高了质量. 排位控制接提供了一致的强度,一个新的模型可以有效地预测关节强度和故障模式.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 复合材料 复合材料 复合材料
背景情况:
- 超声波接是热塑性复合材料的先进连接技术.
- 关于接参数对形态和质量的影响的研究有限.
- 了解接关节故障机制和建模它们是缺乏的.
研究的目的:
- 系统地调查热塑性复合材料的超声波接参数.
- 描述接关节形态,强度和故障模式.
- 开发一个有限元模型来预测接接头的强度和故障.
主要方法:
- 制造具有各种参数和控制方法的超声波接样本.
- 对形态,强度和故障模式的实验评估.
- 为故障模拟开发一个连贯的有限元模型.
主要成果:
- 高振幅和低接力在相同的参数下产生优越的接质量.
- 排位控制导致标本的强度变化最小.
- 有限元模型准确地预测了接接头的强度和故障模式.
结论:
- 接参数显著影响热塑性复合材料的关节质量.
- 位移控制在超声波接中提供了增强的强度一致性.
- 开发的有限元模型为预测超声波接接头的性能和故障提供了强大的工具.
相关概念视频
Unsymmetric Loading of Thin-Walled Members: Problem Solving
132
The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
132
Thin-Walled Hollow Shafts
210
In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution...
210
Bending of Members Made of Several Materials
207
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...
207
Bending of Curved Members - Strain Analysis
155
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member...
The important part of bending analysis for such a member...
155
Unsymmetric Loading of Thin-Walled Members
133
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...
133
Yield Criteria for Ductile Materials under Plane Stress
185
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
The Maximum Shearing Stress Criterion, also known as...
185


