Multi-Axial Damping Pad Structure for Isolator Displacement Control
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Solution Overview
Problem
Existing motion isolators are often inadequate in controlling displacement and dissipating energy across multiple degrees of freedom, leading to potential damage from excessive loading, as they are typically designed to manage motion in a single direction or degree of freedom, making them vulnerable under complex loading conditions.
Innovation Solution
An energy damping and displacement control device comprising a contact protrusion and an energy damping pad constructed of resilient material, with faces oriented in specific planes to limit motion and absorb energy in multiple axes, providing both energy damping and motion displacement control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional motion isolators are used to isolate equipment from ship loading effects, then equipment is protected from vibration and shock in single direction, but the isolators cannot control displacement or provide adequate protection under combined loading conditions from multiple directions
Solution Approach 1:
The isolator system is divided into multiple independent isolator units, each capable of handling loading in specific directions. This segmentation allows the system to address multi-axial loading by combining multiple single-direction isolators rather than requiring a single complex isolator design.
Solution Approach 2:
Each isolator unit is designed with universal functionality to handle multiple types of loading conditions (vertical, lateral, rotational) through its composite structure combining spring elements, dashpots, and friction elements, making the system adaptable to various shipboard loading scenarios.
2Object-affected harmful factors
If softer isolator wire ropes are used to minimize high g-force shock impact, then shock absorption in certain direction is improved, but the isolators are not rigid enough to prevent bottoming out under rotational or combined loads
Solution Approach 1:
The isolator employs a composite structure combining multiple elements with different mechanical properties: spring elements for elasticity, dashpots for viscous damping, and friction elements for Coulomb damping. This composite design provides both softness for shock absorption and structural integrity for preventing bottoming out under combined loads.
Solution Approach 2:
Multiple damping mechanisms (viscous damping from dashpots, friction damping from friction elements, and elastic damping from springs) are merged into a single isolator unit, creating a hybrid system that combines the advantages of each mechanism to handle both shock absorption and rotational load resistance.
3Ease of manufacture
If motion isolators are designed for single direction control, then they meet shock absorption requirement in given direction, but they cannot prevent damage under complex combined loading scenarios
Solution Approach 1:
The complex multi-axial isolation problem is segmented into multiple independent single-direction isolator units. Each unit maintains simple design and manufacturing characteristics while the collective arrangement of multiple units provides comprehensive protection against complex combined loading scenarios.
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 device effectively restricts motion and absorbs energy in multiple axes, protecting motion isolators and supported structures from damage by managing displacement within a safe range, thereby maintaining system integrity under dynamic loading conditions.
Implementation Method 1
an energy damping pad constructed of a resilient material... displacement motion of the contact protrusion relative to the energy damping pad can be limited by contact with at least one of the first or second faces of the energy damping pad
Implementation Method 2
energy damping and displacement control device... providing both energy damping and motion displacement control
Data Source
AI summary
An energy damping and displacement control device is disclosed. The energy damping and displacement control device can include a contact protrusion and an energy damping pad constructed of a resilient material. The energy damping pad can have a first face oriented along a first plane. The energy damping pad can also have a second face oriented along a second plane transverse to the first plane, and toward the contact protrusion. In a static condition, the first and second faces of the energy damping pad can be separated from the contact protrusion. In a dynamic condition, displacement motion of the contact protrusion relative to the energy damping pad can be limited by contact with at least one of the first or second faces of the energy damping pad, which provides energy damping and motion displacement control of the contact protrusion in multiple axes.