相关实验视频
Updated: Jul 18, 2025

11:00
Biaxial Mechanical Characterizations of Atrioventricular Heart Valves
Published on: April 9, 2019
14.4K
一个带有张力压缩结构的双轴高G平电阻加速器的设计
Peng Wang1,2,3, Yujun Yang1, Manlong Chen1,2
1School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China.
Micromachines
|August 26, 2023
概括
一个新的双轴压电阻加速度计被设计用于高g加速度测量在苛刻的领域. 这种传感器达到200,000g范围,具有高灵敏度和自然频率,对于武器透和航空航天等应用至关重要.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 传感器技术 传感器技术
背景情况:
- 高g加速测量在武器穿透,航空航天和爆炸性冲击等领域至关重要.
- 现有的加速度计在准确测量多维高g力时可能面临局限性.
研究的目的:
- 设计和分析一种能够测量多维高g加速度的双轴压电阻加速度计.
- 开发一种具有增强反交叉干扰能力的传感器,以进行可靠的测量.
主要方法:
- 张力压缩压缩加速仪的设计,重点是其敏感结构.
- 基于悬臂光束应力特征,开发一个信号测试电路以减轻交叉干扰.
- 用有限元法 (FEM) 分析来确定结构性绩效指数.
- 分析芯片的制造工艺流程和包装方案.
主要成果:
- 设计的传感器具有200,000g的完整测量范围.
- 获得的灵敏度在X方向为1.39μV/g,在Y方向为1.42μV/g.
- 自然频率为509.8千赫 (X方向) 和510.2千赫 (Y方向).
结论:
- 开发的双轴压电阻加速度计符合高g应用的严格测量要求.
- 传感器的设计和反交叉干扰电路确保在极端环境中可靠的性能.
- 这项研究证实了传感器在武器透,航空航天和爆炸性冲击研究中使用的潜力.
相关概念视频
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
290
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.
290
Behavior of Concrete Under Compressive Load
206
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...
206
Eccentric Axial Loading in a Plane of Symmetry
222
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.
222
Normal Strain under Axial Loading
560
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
560
Design Example: Strain Gauge Bridge or Wheatstone Bridge
441
The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
441
Stress: General Loading Conditions
335
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....
335

