The ffeplus iterative solver run times are 10 to 15 percent. The question may now arise, why use the direct sparse solver. Under these certain conditions the direct sparse solver will be chosen automatically. Accurate design simulation improves product development. Ripeness detection of orange fruit using experimental and. Because i expect some small features to deform quite a bit, i need to.
There are times, however, regardless of the problem size that you may need to use one solver over another. Generally, a fea software offers the following two types of solvers as is the case of solidworks, see figure 1. Breakthrough simulation speeds experience the everyday. This means that any slight numerical instability in your model will cause the. In 2018 solidworks introduced a new capability to their flow software. The solver may also change during the solve depending on the conditions encountered. It assumes a solution and then calculates the associated errors.
A body without any restraints has six rigid body modes. When comparing the speed of the solvers, the ffeplus. Solidworks as to the software and documentation are set forth in the license agreement, and nothing stated in, or implied by, this document or its contents shall be considered or deemed a modification or amendment of any terms, including warranties, in the license agreement. This is called free surface and opens up many more applications for. Automatic, the software selects the solver based on the study type, analysis.
The software selects the solver based on the study type, analysis options, contact conditions, etc. Solidworks will pick the most efficient and most accurate solver for the particular study automatically. Curious about how you design a certain 3d printable model or which cad software works best for a particular project. Introduction the failure of machine parts often occurs.
A 3d model of the orange was created by solidworks software, in the part document, on the basis of actual. For solidworks simulation files, the results are contained in one file with the extension cwr. I do not see it using both for meshing, but do see both cores maxed out for parts of the solver. Some options and conditions apply only to either direct sparse or ffeplus. Sparse solver becomes the solver of choice in problems where the software. Solidworks simulation 2014 software with the latest intel xeon processor e52600 v2 product family and intel ssdsis as. Solidworks 2019 intel cpu performance puget systems. Vibration analysis with solidworks simulation 2014 48 in the study properties, specify one mode and use the. Solidworks simulation 2015 fea solvers computer aided. Direct sparse, intel direct sparse, large problem direct sparse, intel network sparse. Solidworks simulation has four options for solvers. Last year, solidworks simulation 2014 introduced the large problem direct sparse solver. Solidworks simulation provides two options to solve the set of fea algebraic equations.
Fatigue analysis of an outer bearing bush of a kaplan turbine. Frequency analysis options solidworks simulation cad cam. Pdf toilet assistive system designed for the reduction. Numerical modal analysis of vibrations in a threephase. The direct sparse solver requires 10 times more ram than the ffeplus solver.
The solver can handle cases where the solution is going out of core. The automatic choice for a solver is the default option for static, frequency, buckling, and thermal studies. Im trying to use the solidworks simulation package to solve for the stresses inside a body as it accelerates very rapidly. Rigid body modes are calculated by the ffeplus solver. When you exceed 300,000 dof, the ffeplus solver is more efficient than the direct sparse solver in not requiring as much of your systems ram. The default is to calculate the lowest five frequencies. Cosmosm users guide chapter 1 introduction the cosmosffe modules are developed for the solution of large problems using sparse matrix technology along with iterative methods. Direct sparse or ffeplus, thats the question engineer jau. Dassault systemes launched the initial version of solidworks 2019 late last year, but with the recent release of sp1 we expect that customers will soon be using it in production.
Solidworks uses the ffeplus iterative solver by default unless certain conditions are present. The solver used in solidworks was the direct solver, and the reason for this choice was to bind to the type of geometry. Solidworks simulation common errors and troubleshooting. Solidworks simulation premium software running on intel processors to tackle. Structural analysis of gfrp truss bridge model sciencedirect. Outer bearing bush, kaplan turbine, fatigue analysis 1.
I did my research on srac, the company who develops cosmos, before investing in them and i found they have been around since 1982, so they have a lot of experience in fea software as well. Pick a material from the cosmos or solidworks material libraries. Solidworks animator solidworks explorer solidworks task scheduler. Choosing a solver in solidworks simulation goengineer. Auto, ffeplus, direct sparse, and large problem direct sparse. Solidworks 2016 multi core performance puget systems. Indeed, the ffeplus solver is not recommended as it becomes less. Indeed, the ffeplus solver is not recommended as it becomes less accurate than a direct solver in multimaterial assemblies figure 9a.
The iterative solver, ffeplus, uses approximate techniques to solve the problem. Solid works simulation student guide 2010 eng docshare. Grabcad was built on the idea that engineers get better by interacting with. Solidworks simulation database files description irfan. The software discussed in this document is furnished under a. Solidnotes is your source for solidworks, simulation fea, data management pdm. When comparing the speed of the solvers, the ffeplus solver was beyond. I was told that it essentially solves hooks law, but i do not know what the exact equations are.
I have run some solidworks simulation studies and i was wondering what the equations were that the ffeplus or any of the other solvers actually solved. Then five scenarios corresponding to positions p1 to p5 are evaluated. Due to the high number of degrees of freedom, the ffeplus solver builtin solidworks 20 is selected, as recommended. Now that they are owned by solidworks, they have a lot more backing to innovate and develop their software.
At that time we had two solver choices ffeplus and direct sparse. The software selects the solver based on the study type, analysis options, contact conditions. The iterations continue until the errors become acceptable. Despite how popular solidworks is, there is a lot of outdated and simply inaccurate information on the web regarding how many cpu cores it is able to effectively utilize. Numerical model the behavior of the pedestrian bridge was simulated using the solidworks software. I know that ffeplus is an iterative solver, but i do not know exactly what it is iterating on. In general, the ffeplus solver requires less ram than the direct sparse and intel. Solidworks simulation provides users with several options when selecting a solver, they include. Other information like study properties, materials, restraints, loads, and. However, when you are using the ffeplus solver you are obtaining the solution through iteration. Solvers solidworks simulation fea software enables you to utilize either direct or iterative solving methods with its direct sparse or ffeplus solvers. I presented the results that you can obtain using that software. Some time ago, i had written a blog post comparing two solvers in solidworks simulations, ffeplus and direct sparse.
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