Finite Element Analysis supplies knowledge to foretell how a seal product will function under certain circumstances and might help determine areas the place the design could be improved with out having to check multiple prototypes.
Here we clarify how our engineers use FEA to design optimal sealing options for our buyer functions.
Why can we use Finite Element Analysis (FEA)?
Our engineers encounter many crucial sealing functions with complicating influences. Envelope measurement, housing limitations, shaft speeds, pressure/temperature rankings and chemical media are all software parameters that we should contemplate when designing a seal.
In isolation, the impression of these software parameters within reason easy to foretell when designing a sealing solution. However, whenever you compound a quantity of these factors (whilst often pushing some of them to their upper limit when sealing) it’s crucial to predict what goes to occur in actual software circumstances. Using FEA as a device, our engineers can confidently design after which manufacture strong, dependable, and cost-effective engineered sealing solutions for our clients.
Finite Element Analysis (FEA) permits us to know and quantify the results of real-world circumstances on a seal half or assembly. It can be used to establish potential causes where sub-optimal sealing efficiency has been noticed and may also be used to information the design of surrounding elements; particularly for products such as diaphragms and boots the place contact with adjacent parts could have to be averted.
The software additionally allows pressure knowledge to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals can be precisely predicted to assist clients in the ultimate design of their products.
How can we use FEA?
Starting with เกจวัดแรงดันราคา or 3D model of the preliminary design concept, we apply the boundary conditions and constraints provided by a buyer; these can embody strain, pressure, temperatures, and any utilized displacements. A suitable finite component 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 less relevance (or decrease ranges of displacement) to minimise the computing time required to unravel the model.
Material properties are then assigned to the seal and hardware elements. pressure gauge trerice ราคา sealing materials are non-linear; the quantity they deflect underneath a rise in drive varies relying on how large 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, but we use in-house tensile take a look at amenities to precisely produce the stress-strain materials models for our compounds to make sure the evaluation is as representative of real-world efficiency as possible.
What happens with the FEA data?
The evaluation itself can take minutes or hours, relying on the complexity of the half and the range of operating situations being modelled. Behind the scenes in the software, many tons of of thousands of differential equations are being solved.
The outcomes are analysed by our experienced seal designers to identify areas where the design could be optimised to match the precise necessities of the appliance. Examples of those necessities could embody sealing at very low temperatures, a must minimise friction ranges with a dynamic seal or the seal may need to withstand high pressures without extruding; no matter sealing system properties are most important to the client and the appliance.
Results for the finalised proposal can be introduced to the customer as force/temperature/stress/time dashboards, numerical knowledge and animations displaying how a seal performs all through the analysis. This data can be utilized as validation knowledge in the customer’s system design process.
An instance of FEA
Faced with very tight packaging constraints, this customer requested a diaphragm element for a valve software. By utilizing FEA, we were able to optimise the design; not only of the elastomer diaphragm itself, but in addition to propose modifications to the hardware parts that interfaced with it to extend the obtainable area for the diaphragm. This stored material stress ranges low to take away any possibility of fatigue failure of the diaphragm over the lifetime of the valve.
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