Finite Element Analysis supplies information to predict how a seal product will perform under certain circumstances and might help determine areas the place the design could be improved with out having to check a number of prototypes.
Here เกจวัดแรงดัน300psi clarify how our engineers use FEA to design optimal sealing options for our buyer purposes.
Why do we use Finite Element Analysis (FEA)?
Our engineers encounter many crucial sealing purposes with complicating influences. Envelope dimension, housing limitations, shaft speeds, pressure/temperature scores and chemical media are all utility parameters that we should consider when designing a seal.
In isolation, the impression of these utility parameters is fairly simple to predict when designing a sealing resolution. However, when you compound a variety of these components (whilst often pushing a few of them to their higher limit when sealing) it is crucial to predict what goes to happen in real application conditions. Using FEA as a software, our engineers can confidently design after which manufacture robust, dependable, and cost-effective engineered sealing solutions for our prospects.
Finite Element Analysis (FEA) allows us to understand and quantify the consequences of real-world circumstances on a seal part or meeting. It can be utilized to establish potential causes the place sub-optimal sealing performance has been observed and may additionally be used to guide the design of surrounding parts; particularly for merchandise such as diaphragms and boots where contact with adjacent components might have to be avoided.
The software program also permits force knowledge to be extracted so that compressive forces for static seals, and friction forces for dynamic seals could be accurately predicted to help customers in the ultimate design of their products.
How will we use FEA?
Starting with a 2D or 3D model of the preliminary design concept, we apply the boundary situations and constraints supplied by a buyer; these can include strain, force, temperatures, and any applied displacements. A appropriate finite element mesh is overlaid onto the seal design. This ensures that the areas of most curiosity return accurate outcomes. We can use bigger mesh sizes in areas with less relevance (or decrease ranges 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 amount they deflect under an increase in force varies relying on how large that drive is. This is in contrast to the straight-line relationship for many metals and rigid plastics. This complicates the fabric mannequin and extends the processing time, however we use in-house tensile take a look at services to accurately produce the stress-strain materials models for our compounds to ensure the evaluation is as consultant of real-world performance as attainable.
What happens with the FEA data?
The analysis itself can take minutes or hours, relying on the complexity of the part and the range of operating conditions being modelled. Behind the scenes within the software program, many hundreds of thousands of differential equations are being solved.
The results are analysed by our experienced seal designers to identify areas the place the design can be optimised to match the particular requirements of the applying. Examples of these requirements could embody sealing at very low temperatures, a have to minimise friction ranges with a dynamic seal or the seal may have to resist excessive pressures without extruding; no matter sealing system properties are most essential to the customer and the appliance.
Results for the finalised proposal may be introduced to the client as force/temperature/stress/time dashboards, numerical data and animations showing how a seal performs all through the analysis. This information can be utilized as validation knowledge within the customer’s system design process.
An instance of FEA
Faced with very tight packaging constraints, this buyer requested a diaphragm part for a valve application. By utilizing FEA, we have been able to optimise the design; not only of the elastomer diaphragm itself, but in addition to suggest modifications to the hardware components that interfaced with it to extend the available area for the diaphragm. This saved material stress levels low to take away any risk of fatigue failure of the diaphragm over the life of the valve.
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