Finite Element Analysis provides information to predict how a seal product will function under sure situations and can help establish areas the place the design may be improved with out having to check a quantity of prototypes.
Here we clarify how our engineers use FEA to design optimal sealing solutions for our customer applications.
Why do we use Finite Element Analysis (FEA)?
Our engineers encounter many critical sealing purposes with complicating influences. Envelope dimension, housing limitations, shaft speeds, pressure/temperature ratings and chemical media are all software parameters that we must contemplate when designing a seal.
In ร้านซ่อมเครื่องวัดความดันomron , the impression of these utility parameters is fairly simple to predict when designing a sealing answer. However, whenever you compound a number of these factors (whilst typically pushing some of them to their higher restrict when sealing) it is crucial to foretell what will occur in real application situations. Using FEA as a software, our engineers can confidently design after which manufacture robust, dependable, and cost-effective engineered sealing options for our clients.
Finite Element Analysis (FEA) permits us to understand and quantify the effects of real-world conditions on a seal half or assembly. It can be used to identify potential causes the place sub-optimal sealing performance has been noticed and can be used to guide the design of surrounding elements; particularly for merchandise corresponding to diaphragms and boots the place contact with adjacent elements could need to be avoided.
The software program also 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 help customers within the ultimate design of their merchandise.
How do we use FEA?
Starting with a 2D or 3D mannequin of the preliminary design concept, we apply the boundary conditions and constraints supplied by a customer; these can include pressure, pressure, temperatures, and any applied displacements. A suitable finite element mesh is overlaid onto the seal design. This ensures that the areas of most curiosity return accurate outcomes. We can use larger mesh sizes in areas with less relevance (or decrease levels of displacement) to minimise the computing time required to unravel the model.
Material properties are then assigned to the seal and hardware parts. Most sealing materials are non-linear; the quantity they deflect underneath a rise in force varies depending on how giant that force is. เกจวัดแรงดันถังลม is in contrast to the straight-line relationship for many metals and rigid plastics. This complicates the material model and extends the processing time, but we use in-house tensile take a look at facilities to precisely produce the stress-strain material fashions for our compounds to ensure the analysis is as representative of real-world performance as potential.
What occurs with the FEA data?
The evaluation itself can take minutes or hours, relying on the complexity of the half and the vary of working situations being modelled. Behind the scenes in the software, many hundreds of hundreds of differential equations are being solved.
The outcomes are analysed by our skilled seal designers to identify areas the place the design could be optimised to match the precise necessities of the applying. Examples of these requirements might embrace sealing at very low temperatures, a have to minimise friction ranges with a dynamic seal or the seal may need to withstand excessive pressures without extruding; no matter sealing system properties are most necessary to the client and the appliance.
Results for the finalised proposal may be introduced to the customer as force/temperature/stress/time dashboards, numerical knowledge and animations displaying how a seal performs throughout the analysis. This data can be utilized as validation information within the customer’s system design course of.
An instance of FEA
Faced with very tight packaging constraints, this buyer requested a diaphragm part for a valve software. By using FEA, we had been capable of optimise the design; not solely of the elastomer diaphragm itself, but additionally to propose modifications to the hardware elements that interfaced with it to increase the available house for the diaphragm. This stored materials stress ranges low to remove any risk of fatigue failure of the diaphragm over the life of the valve.
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