Friction Core Material for Shock Insulation at Low Temperatures
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Solution Overview
Problem
Conventional lead-core laminated rubber shock insulation supports are toxic, contaminate the environment, and have reduced performance at low temperatures due to increased horizontal rigidity of the lead core.
Innovation Solution
A core material composed of steel shots, zirconia particles, and rubber particles, utilizing a dry friction energy consumption mechanism to provide high damping and maintain shock insulation effectiveness at low temperatures, replacing the need for lead core materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If lead core is used in shock insulation support, then damping effect and energy absorption are improved, but environmental pollution and toxicity increase
Solution Approach 1:
The patent changes the material parameters from lead-based to a composite system consisting of steel shots, zirconia particles, and rubber particles. This parameter change maintains the energy absorption capability through friction and deformation mechanisms while eliminating the toxicological parameters associated with lead, thus resolving the contradiction between energy absorption and environmental safety
Solution Approach 2:
The invention employs a composite material system where steel shots provide structural framework and friction, zirconia particles enhance hardness and wear resistance, and rubber particles contribute to energy absorption through viscoelastic deformation. This composite approach achieves the desired damping effect without relying on toxic lead materials, thereby resolving the environmental contamination issue while maintaining energy absorption performance
2Loss of energy
If lead core is used in shock insulation support, then damping effect is improved, but low-temperature performance deteriorates due to increased horizontal rigidity
Solution Approach 1:
The patent changes the material composition from pure metal lead to a composite system with steel shots, zirconia particles, and rubber particles. This parameter change ensures that the friction and deformation mechanisms remain effective at low temperatures, preventing the rigidity increase problem that occurs with lead, thus maintaining both damping effect and low-temperature adaptability
Solution Approach 2:
The composite material system with steel shots, zirconia particles, and rubber particles provides temperature-independent friction and deformation characteristics. The rubber particles maintain their viscoelastic properties at low temperatures, and the steel-zirconia friction interface remains effective, ensuring consistent damping performance across temperature ranges and resolving the low-temperature adaptability issue
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 core material achieves equivalent energy consumption and damping effects to lead-core systems while being environmentally friendly and safe, maintaining stable mechanical properties at low temperatures.
Implementation Method 1
utilizing a dry friction energy consumption mechanism to provide high damping
Implementation Method 2
50 ∼100 parts of rubber particles
Data Source
AI summary
A core material for a shock insulation support, comprising, in parts by weight: steel shot of 150-300 parts, zirconia particles of 50-150 parts and rubber particles of 50-100 parts. Further provided are a shock insulation support comprising the core material, and a preparation method for the shock insulation support. The core material for a shock insulation support, and the shock insulation support dissipates earthquake energy by means of a dry friction energy dissipation mechanism, having high damping and excellent shock insulation performance.