Finite Element Analysis supplies data to foretell how a seal product will operate under certain conditions and might help determine areas the place the design may be improved without having to check multiple prototypes.
Here we clarify how our engineers use FEA to design optimal sealing options for our customer functions.
Why will we use Finite Element Analysis (FEA)?
Our engineers encounter many crucial sealing purposes with complicating influences. Envelope measurement, housing limitations, shaft speeds, pressure/temperature ratings and chemical media are all utility parameters that we should contemplate when designing a seal.
In isolation, the impression of those application parameters is reasonably easy to predict when designing a sealing answer. However, whenever you compound a quantity of these components (whilst typically pushing some of them to their higher limit when sealing) it is crucial to predict what’s going to happen in real software situations. Using เกจวัดแรงอัดกระบอกสูบ as a device, our engineers can confidently design after which manufacture strong, reliable, and cost-effective engineered sealing solutions for our prospects.
Finite Element Analysis (FEA) allows us to understand and quantify the results of real-world situations on a seal part or assembly. It can be utilized to determine potential causes the place sub-optimal sealing efficiency has been observed and can additionally be used to information the design of surrounding elements; particularly for merchandise similar to diaphragms and boots where contact with adjacent parts could have to be avoided.
The software program also permits force information to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals can be precisely predicted to help customers within the ultimate design of their products.
How will we use FEA?
Starting with a 2D or 3D model of the initial design idea, we apply the boundary circumstances and constraints provided by a customer; these can embrace pressure, force, temperatures, and any utilized displacements. A suitable finite factor mesh is overlaid onto the seal design. This ensures that the areas of most curiosity return correct outcomes. We can use larger mesh sizes in areas with much less relevance (or decrease levels of displacement) to minimise the computing time required to resolve the model.
Material properties are then assigned to the seal and hardware elements. Most sealing materials are non-linear; the amount they deflect under an increase in force varies relying on how giant that pressure is. This is unlike the straight-line relationship for many metals and inflexible plastics. This complicates the fabric model and extends the processing time, however we use in-house tensile test facilities to accurately produce the stress-strain materials fashions for our compounds to ensure the analysis is as representative of real-world performance as attainable.
What occurs with the FEA data?
The evaluation itself can take minutes or hours, relying on the complexity of the part and the vary of operating conditions being modelled. Behind the scenes within the software, many hundreds of thousands of differential equations are being solved.
The results are analysed by our experienced seal designers to identify areas where the design may be optimised to match the precise necessities of the appliance. Examples of those requirements could include sealing at very low temperatures, a need to minimise friction levels with a dynamic seal or the seal may have to withstand excessive pressures without extruding; no matter sealing system properties are most essential to the customer and the applying.
Results for the finalised proposal can be introduced to the customer as force/temperature/stress/time dashboards, numerical data and animations showing how a seal performs all through the analysis. This data can be used as validation knowledge within the customer’s system design process.
An instance of FEA
Faced with very tight packaging constraints, this customer requested a diaphragm component for a valve utility. By using FEA, we were in a place to optimise the design; not only of the elastomer diaphragm itself, but also to suggest modifications to the hardware components that interfaced with it to increase the obtainable house for the diaphragm. This kept materials stress levels low to take away any possibility of fatigue failure of the diaphragm over the life of the valve.