SIMULIA from Dassault Systemes is a simulation application for 3d objects.
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Simulink
Score 10.0 out of 10
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MathWorks offers the Simulink product family including the Simscape physical modeling suite, simulation, validation, and testing tool set, a 3D animation module, signal processing toolbox for wireless communication, control systems, and event-based monitoring, to aid in the design of complex systems.
It appears to be evolving more towards large users with the 3D EXPERIENCE, while becoming less focused on small users like me, becoming more expensive and limiting the number of cores while most PC's now can easily run 8 cores. Of course it is great for non-linear and highly non-linear scenarios, and especially good at combing a huge variety of element types. I guess it is not best suited for linear analysis due to its high price, but even in this case you have to put in the balance the ability to make the best choice of finite elements and being so straightforward about actually using them.
Simulink is a great tool for designing systems in the very early stages of projects. This lets you understand concepts and have a working model much faster, saving you time and money by being able to find errors really quick. On the other hand, when the projects reach a state of deployment you'll need to translate all the acquired knowledge and/or data from Simulink to the specific system you will be using. For example, you might design and validate a spacecraft propulsion system in Simulink, but when you build the real life model you will need to translate the designed algorithm/system to the actual code running aboard the spacecraft.
Create and modify designs from within the CAE environment. Although it has very basic capabilities, it is quite capable of generating 2D and 3D parametric designs. I have even generated some "fancy" designs which ended up being a challenge for draftsmen in specialized solid modeling CAD. I also like the fact that being somewhat limited, it forces you to stick to simple and effective design.
Addressing structural instabilities such as snap-through or buckling. This was such a challenge when I started using Abaqus, I had to take a course on "achieving convergence". Coming from there, I can see how SIMULIA has become increasingly able to give you the numerical tools or tricks you need to achieve convergence consistently. In the past I often feared running into different convergence issues as I moved across different produce sizes, leading to changes in the analysis approach, which would make it more difficult to compare them. I just went through a 12-size family in 5 dimensional scenarios each, without a single issue after ensuring convergence with the first couple of sizes.
Beautiful pictures. The post-processing of results enables me to generate highly illustrative, fairly easy to understand and elegant presentations, by controlling transparency and results shown independently on different groups, which I can select by material, location, etc.
Exporting sketches. For example, you can import dxf for sketches, but you can't export dxf. This is a major drawback for me, because I often communicate with customers through dwg or dxf sketches. If I can't export dxf, my sketches in CAE are "dead". I have to redo them in the dwg sketch. It is so inconvenient, I often end up making the sketches in DraftSight, so I can export them to CAE but I still have the originals in dwg format.
CAE doesn't remember element type assignment by sets. Sometimes when I reconfigure or modify a design, I regenerate sets and surfaces, and this in turn updates material assignments, interactions and loads almost automatically. This doesn't happen with element types, so I often end up submitting a job with the wrong element types.
Mesh regeneration and re-mapping in 2D within the job. I need this a lot to model axisymmetric assemblies with sharp indentation the destroys the original mesh. I had it in MSC/MARC and it worked great. Abaqus has it only for 3D. I have tried alternatives like lagrangian/eulerian and eulerian domains but it's still more complicated.
Learning curve for designing accurate models and getting useful results can be pretty steep for most people that aren't used to graphical based design and representation of systems.
Simulink requires a lot of CPU power and computer resources to run smoothly without crashing. Together with the MATLAB environment, a standard installation consumes a lot of disk space and becomes greater when more toolboxes are included.
Community for Simulink support and documentation is inferior to that of MATLAB and it isn't used as a standard tool by most of academia. I believe other tools such as Labview are far more common, making it easier to get help and find examples online.
Extremely well organized and friendly, reflecting the latest approaches in solid modeling and adding the FEA part so seamlessly for the user. It's a joy to use. I'm aware some people would complain about the meshing capabilities and thus prefer using HYPERMESH. Fortunately not my case. I did wish I had HYPERMESH a couple of times, but for most of my projects CAE meshing is fine.
I keep getting the feeling that it is drifting away from small users. I don't feel so comfortable with the SWYM community approach. I felt much better when you could just email or call HKS and you would feel like you were talking to a real expert who understood your situation. When I was reassigned to reseller in Argentina, which is like the other side of the world for me, I appreciated the cultural closeness, but I had to say goodbye to the level of support I had from HKS and learned to "support myself."
MARC can do the job from an FEA point of view. It even appears better at a couple of things such as 2D remeshing and surviving with highly distorted meshes. So I regard it as a very competitive alternative. I prefer SIMULIA because the GUI is so much better, especially the ability to create actual parametric designs in CAE. ANSYS doesn't cut it for me. I tried it for 1 month and I would see how much I would struggle with convergence in large deformation and large displacement situations with hyperelastic materials with which I have to deal all the time. Also the GUI is not as well built an integrated as in SIMULIA.
Control blocks and more detailed algorithms can be run in Matlab Simulink. Simulation and PCB drawing of electronic circuit boards are performed in Proteus.
I don't even bother doing an ROI. Without SIMULIA I would be pretty much out of business. Except for the fact that I could still have an alternative with MSC/MARC.
Price is becoming a more difficult hurdle for small users. It appears I have survived because there was a 50% discount on my small 6-token package. Without this special price I would have to close my business. I'm currently exploring alternatives.
A more flexible scheme enabling to add tokens over short periods of time or paying per use could be an interesting possibility.
