Piezoelectric Multilayer Component Vibration Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Piezoelectric multi-layer components in motor vehicle systems face mechanical damage risks due to high mechanical loads and dynamic reactions, which existing technologies fail to adequately mitigate.
Innovation Solution
Incorporating an absorption layer with altered density and elasticity within the component stack, which absorbs and dissipates mechanical vibrations, reducing the risk of damage by deflecting or refracting mechanical energy through the interface effects between absorption and piezoelectric layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If piezoelectric multi-layer components are used in motor vehicle systems, then functional performance is achieved, but mechanical damage risk increases due to high mechanical loads and dynamic reactions
Solution Approach 1:
An absorption layer is introduced as an intermediary element between the piezoelectric ceramic layers. This absorption layer has different density and elasticity characteristics, creating interface effects that deflect and refract mechanical energy and pressure waves, thereby protecting the piezoelectric layers from direct mechanical damage while maintaining component functionality
Solution Approach 2:
The absorption layer converts harmful mechanical vibrations and shock waves into beneficial interface effects. By utilizing the density and elasticity differences at the interfaces, the component transforms mechanical energy that would otherwise cause damage into controlled wave deflection and refraction, reducing cumulative shock wave packets and preventing crack propagation
2Ease of operation
If mechanical stops are used to limit piezoelectric component expansion in injection systems, then control is improved, but mechanical load and vibration intensity increase
Solution Approach 1:
The absorption layer converts the intensified mechanical loads and vibrations resulting from expansion control into beneficial interface effects. The density and elasticity differences at the interfaces create wave deflection and refraction that dissipates mechanical energy, transforming the harmful high-intensity forces into controlled physical phenomena that protect the piezoelectric layers
3Productivity
If rapid sequence of mechanical impacts occurs, then injection process efficiency is improved, but shock wave propagation and cumulative damage risk increase
Solution Approach 1:
The absorption layer converts rapidly propagating shock waves from sequential impacts into beneficial interface effects. The density and elasticity differences cause shock waves to refract and deflect at each interface, transforming long-duration cumulative shock propagation into short-duration controlled wave interactions that dissipate energy and prevent damage accumulation
Solution Approach 2:
The interface effects cause shock waves to skip through the component structure by refracting and deflecting at interfaces rather than propagating directly. This skipping behavior reduces the effective propagation duration and cumulative intensity of shock waves, allowing rapid injection sequences without proportional damage accumulation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The absorption layer effectively reduces the risk of mechanical damage by dissipating mechanical energy, preventing long-term propagation of shock waves and reducing the intensity of cumulative shock wave packets, thereby enhancing the component's durability and operational stability.
Implementation Method 1
the absorption layer is capable of absorbing mechanical vibrations
Implementation Method 2
the absorption layer has the advantage that, for a rapid sequence of several mechanical impacts on the multi-layer component, long-term propagation of the resulting mechanical shock waves can be effectively prevented
Implementation Method 3
The interface effect in or at the absorption layers can lead to the absorption, refraction, dispersion, or also deflection of the mechanical energy
Implementation Method 4
The interface effect in or at the absorption layers can lead to the absorption, refraction, dispersion, or also deflection of the mechanical energy
Data Source
AI summary
The invention relates to a piezoelectric multi-layer component with a plurality of piezoelectric layers (1) lying one above the other and with electrode layers (2a, 2b) arranged between the piezoelectric layers, wherein an absorption layer (4) of absorbing mechanical vibration energy is arranged in the layer stack.