Finite Element Analysis offers information to foretell how a seal product will function underneath certain situations and might help determine areas where the design can be improved without having to check a number of prototypes.
Here we explain how our engineers use FEA to design optimum sealing options for our customer purposes.
Why will we use Finite Element Analysis (FEA)?
Our engineers encounter many crucial sealing applications with complicating influences. Envelope size, housing limitations, shaft speeds, pressure/temperature ratings and chemical media are all software parameters that we should consider when designing a seal.
In isolation, the influence of these software parameters is reasonably easy to foretell when designing a sealing resolution. However, whenever you compound a number of these factors (whilst usually pushing some of them to their higher restrict when sealing) it is crucial to predict what’s going to happen in actual application conditions. Using FEA as a tool, our engineers can confidently design and then manufacture strong, reliable, and cost-effective engineered sealing options for our clients.
Finite Element Analysis (FEA) allows us to know and quantify the effects of real-world conditions on a seal half or meeting. It can be used to establish potential causes the place sub-optimal sealing performance has been noticed and can also be used to guide the design of surrounding elements; particularly for products corresponding to diaphragms and boots the place contact with adjacent components may must be prevented.
The software additionally allows drive information to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals may be precisely predicted to assist prospects 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 supplied by a customer; these can include strain, pressure, temperatures, and any utilized displacements. A appropriate 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 lower levels of displacement) to minimise the computing time required to unravel the mannequin.
Material properties are then assigned to the seal and hardware components. Most sealing supplies are non-linear; the quantity they deflect underneath an increase in pressure varies depending on how large that drive is. เครื่องมือวัดความดันคือ is in contrast to the straight-line relationship for many metals and inflexible plastics. This complicates the material mannequin and extends the processing time, however we use in-house tensile take a look at amenities to accurately produce the stress-strain material fashions for our compounds to ensure the analysis is as representative of real-world efficiency as attainable.
What happens with เกจวัดอาร์กอน ?
The evaluation itself can take minutes or hours, relying on the complexity of the half and the range of working circumstances being modelled. Behind the scenes in the software program, many hundreds of thousands of differential equations are being solved.
The results are analysed by our experienced seal designers to establish areas the place the design could be optimised to match the particular requirements of the appliance. Examples of these necessities may include sealing at very low temperatures, a need to minimise friction ranges with a dynamic seal or the seal might have to withstand high pressures with out extruding; whatever sealing system properties are most important to the shopper and the application.
Results for the finalised proposal may be offered to the customer as force/temperature/stress/time dashboards, numerical information and animations showing how a seal performs throughout the evaluation. This info can be utilized as validation data in the customer’s system design course of.
An example of FEA
Faced with very tight packaging constraints, this buyer requested a diaphragm component for a valve application. By using FEA, we have been capable of optimise the design; not solely of the elastomer diaphragm itself, but in addition to propose modifications to the hardware parts that interfaced with it to extend the available house for the diaphragm. This saved material stress levels low to remove any chance of fatigue failure of the diaphragm over the life of the valve.
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