Finite Element Analysis provides knowledge to foretell how a seal product will operate beneath certain situations and may help establish areas where the design could be improved without having to test multiple prototypes.
Here we clarify how our engineers use FEA to design optimal sealing solutions for our customer purposes.
Why can we use Finite Element Analysis (FEA)?
Our engineers encounter many important sealing purposes with complicating influences. Envelope size, housing limitations, shaft speeds, pressure/temperature scores and chemical media are all utility parameters that we should contemplate when designing a seal.
In isolation, the influence of these application parameters is fairly easy to foretell when designing a sealing resolution. However, when you compound a quantity of these components (whilst often pushing a few of them to their higher restrict when sealing) it’s crucial to predict what’s going to occur in actual utility conditions. Using FEA as a software, our engineers can confidently design after which manufacture strong, reliable, and cost-effective engineered sealing solutions for our clients.
Finite Element Analysis (FEA) allows us to grasp and quantify the consequences of real-world situations on a seal part or meeting. It can be used to identify potential causes where sub-optimal sealing performance has been observed and can also be used to guide the design of surrounding components; particularly for merchandise such as diaphragms and boots the place contact with adjoining components could must be avoided.
ตัววัดแรงดัน permits pressure data to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals could be precisely predicted to assist prospects in the final design of their products.
How can we use FEA?
Starting with a 2D or 3D model of the initial design idea, we apply the boundary situations and constraints supplied by a buyer; these can embody stress, force, temperatures, and any utilized displacements. A appropriate finite factor mesh is overlaid onto the seal design. This ensures that the areas of most interest return accurate results. We can use bigger mesh sizes in areas with much less relevance (or decrease levels of displacement) to minimise the computing time required to unravel the mannequin.
Material properties are then assigned to the seal and hardware elements. Most sealing supplies are non-linear; the amount they deflect beneath a rise in drive varies depending on how massive that force is. This is not like the straight-line relationship for many metals and rigid plastics. This complicates the material mannequin and extends the processing time, however we use in-house tensile check amenities to accurately produce the stress-strain materials fashions for our compounds to ensure the evaluation is as consultant of real-world efficiency as potential.
What happens with the FEA data?
The evaluation itself can take minutes or hours, depending on the complexity of the part and the range of working circumstances being modelled. Behind the scenes within the software, many lots of of 1000’s of differential equations are being solved.
The outcomes are analysed by our experienced seal designers to identify areas the place the design can be optimised to match the precise necessities of the application. Examples of these requirements may embody sealing at very low temperatures, a need to minimise friction ranges with a dynamic seal or the seal may need to withstand excessive pressures with out extruding; whatever sealing system properties are most important to the shopper and the applying.
Results for the finalised proposal can be offered to the customer as force/temperature/stress/time dashboards, numerical knowledge and animations displaying how a seal performs throughout the analysis. This info can be used as validation data within the customer’s system design process.
An instance of FEA
Faced with very tight packaging constraints, this buyer requested a diaphragm component for a valve software. By utilizing FEA, we were capable of optimise the design; not solely of the elastomer diaphragm itself, but additionally to propose modifications to the hardware components that interfaced with it to extend the available area for the diaphragm. เกจวัดความดันpressuregauge stored materials stress ranges low to take away any chance of fatigue failure of the diaphragm over the lifetime of the valve.
Share