Home
Videos uploaded by user “Unpopular Mechanics”
What is Finite Element Analysis? FEA explained for beginners
 
06:26
So you may be wondering, what is finite element analysis? It's easier to learn finite element analysis than it seems, and I'm going to try to explain what FEA is in a simple and easy to understand way for beginners. Finite element analysis uses the finite element method to simulate physical events through computational modeling. I will not be getting into the various equations behind this calculation, but I will be sticking to broad concepts and real world applications. This is a very simple introduction to finite element analysis explained in very basic terms for beginners to understand. This includes the basic concepts of geometries, meshing, and simulation of finite element analysis. FEA is a fast growing field and is utilized in various industries including automotive safety, civil engineering, computational biomechanics, sports biomechanics ect. Examples of finite element analysis software are LS-DYNA, Abaqus, Ansys, Pam-Crash, Radioss, and others. I will be posting new videos ~weekly that will include more in depth analysis of this topic, as well as software tutorials ect. If you are interested in any of this, hit that subscribe button.
Views: 24947 Unpopular Mechanics
9 Types of Engineering Students: Undergraduate Edition
 
09:26
There are many types of engineering students, some helpful, some useless. You may know some of these types of engineering students from your time as a college student. These are 9 stereotypes of college engineering students that I came across during my time in college. A few of these are more like a state of mind, where some are inspired by specific students that I've worked with as a college engineer. College stereotypes are always fun and there's definitely a fair amount of parody here. I hope this will be entertaining for my fellow engineering students. If you don't agree or have other categories for types of students with engineering majors that you think I missed, let me know in the comments. This is a more light-hearted, funny video than I normally produce, so if you are expecting more tutorials, don't worry, I haven't forgotten you. I had a lot of fun making this video and would like to do more like it in the future, so any feedback would be greatly appreciated! 0:00 - I Like Money 1:21 - The Snob 2:04 - I've Seen Mythbusters 2:53 - The Overachiever 3:37 - The Provider 4:32 - The Procrastinator 4:42 - The Grinder 5:27 - Chad 7:00 - Work Smarter, Not Harder
Views: 4827 Unpopular Mechanics
Hypermesh Tutorials for Beginners 1: User Interface and 2D Meshing
 
22:51
Have you been looking for a Hypermesh tutorial for beginners only?I'm here to provide some low level, basic introduction tutorials for Hypermesh. This video shows how to navigate the user interface, use simple operations, and goes over some easy 2D meshing techniques. I go over some of the basic beginner principles of the Hypermesh like how to create a geometry, how to import and export, and find specific operations in the toolbar. I also cover some helpful tips that will save you headaches in the future. I also give a basic 2D automesh meshing tutorial, where I explain the options available within automeshing. Let me know of any suggestions you have for future Hypermesh or LSDYNA videos in the comments!
Views: 5123 Unpopular Mechanics
Hypermesh Tutorials for Beginners 2: 2D Meshing Ruled, Spline, Spin, Offset, Equivalence
 
15:19
Have you been looking for a Hypermesh tutorial for beginners only? I'm here to provide some low level, basic introduction tutorials for Hypermesh. This video shows how to use some 2D meshing operations such as ruled, spline, spin, and offset. I also go over how to remesh an existing 2D mesh and equivalence duplicated nodes. Let me know of any suggestions you have for future Hypermesh or LSDYNA videos in the comments!
Views: 1960 Unpopular Mechanics
What is the process for finite element analysis simulation?
 
04:46
What is finite element analysis? Are you confused about the overall process of how to set up a simulation for finite element analysis (FEA)? Well in this video, I'll go over how a Pre-Processor (LS PrePost) is used to set up an FE model within a set of boundary conditions, how the Solver (LS-Dyna) simulates the event, and how a Post-Processor is used to extract data from the simulation. This overview applies to all finite element analysis software including Ansys, Abaqus, and LS-Dyna. This will all be explained in simple and easy to understand concepts for beginners. Finite element analysis uses the finite element method (FEM) to simulate physical, real-world events, to get a desired response. These models can then be used to estimate the response of an object through limitless forms of situations. I will not be going through equations behind the calculations of FEM in this video, but I will be explaining with broad, easy to understand concepts. Below are some videos that may help you develop the structure/mesh of a finite element model. Meshing overview in Hypermesh: https://www.youtube.com/watch?v=oJNoUWwQs3c&t=307s Meshing overview in Hypermesh 2: https://www.youtube.com/watch?v=FTJnsNBi5Xg&t=57s FEA is a fast-growing field and is utilized in various industries including automotive safety, civil engineering, computational biomechanics, sports biomechanics ect. I will be posting new videos ~weekly that will include more in-depth analysis of this topic, as well as software tutorials ect. If you are interested in any of this, consider subscribing.
Views: 1335 Unpopular Mechanics
LS-DYNA Tutorials for Beginners: Finite Element Analysis Hollow Cylinder Compression
 
43:41
What is finite element analysis? Have you been looking for finite element analysis LS-DYNA tutorial for beginners? This channel is here to explain the details of finite element analysis and the finite element method in simple to understand concepts. This video shows how to set up an axial compression simulation for a hollow cylinder, and how to retrieve useful data from the outputs. The simulation is setup using a pre-processor, LS-PrePost, and is simulated through LS-DYNA explicit analysis. All of the meshing and model set up can be done through the free to download PrePost software. The boundary conditions are defined as a single-point constraint (SPC) for the bottom set of nodes and a boundary prescribed motion for the top set of nodes. Outputs can be defined using the database options to set up sensors for force and deflection. I'll also go over how to visualize a strain heat map for the cylinder through time. Let me know of any suggestions you have for future Hypermesh or LSDYNA videos in the comments! I will be posting new videos ~weekly that will include more in-depth analysis of this topic, as well as software tutorials ect. If you are interested in any of this, consider subscribing.
Views: 2697 Unpopular Mechanics
LS-PrePost Tutorials for Beginners 1: Introduction and User Interface
 
17:49
Have you been looking for a LS-PrePost tutorial for beginners? I'm here to provide some low level, basic introduction tutorials for LS-PrePost. LS-PrePost is a free to use pre and post processor for the finite element analysis solver LS-DYNA. This video provides a basic overview of the user interface and other key aspects of LS-PrePost such as model information, keyword card explanations and more. LS-PrePost is the key tool for any user of LS-DYNA and this tutorial is only an introduction to the software. I will be providing a more in depth look at different aspects in particular, as well as a full tutorial on setting up your first simulation. LS-PrePost can be downloaded for free using the link below: http://www.lstc.com/download Let me know of any suggestions you have for future LS-PrePost videos in the comments!
Views: 4205 Unpopular Mechanics
Free to use LS-DYNA Finite Element Vehicle Models from NHTSA
 
10:07
Here is how to download and use a selection of free to use finite element vehicle models, developed by NHTSA. These models are extremely well designed and can be a useful learning tool for beginners to LS-DYNA and finite element analysis (FEA) modeling techniques. The model that I will highlight in this video is the Chevy Silverado Truck FEA model. Note, that these models are large and complicated and will be challenging to run on a local computer. Finite element analysis uses the finite element method to simulate physical events through computational modeling. These models are a perfect example to how finite element models can be used for real-world applications. The link to the models is below: https://www.nhtsa.gov/crash-simulation-vehicle-models
Views: 1165 Unpopular Mechanics
Hypermesh Tutorials for Beginners 3: Export Mesh k file Import into LS-PrePost
 
04:42
Have you been looking for a Hypermesh/LS-PrePost tutorial for beginners? I'm here to provide some low level, basic introduction tutorials for Hypermesh. This video shows how to export your mesh as a .k file for use with LS-DYNA. I'll give a brief tutorial in how to open that newly exported .k file into LS-PrePost, a free to use pre and post processor for LS-DYNA. I also show a basic overview of the LS-PrePost interface. Let me know of any suggestions you have for future Hypermesh or LS-PrePost videos in the comments!
Views: 908 Unpopular Mechanics
LS-DYNA Tutorials for Beginners: Finite Element Analysis Shell Element Formulations
 
13:22
Element formulations can be confusing for beginners. This is a tutorial where I explain the different types of shell element formulations (ELFORM) within LS-DYNA and finite element analysis (FEA) as a whole. The pre-processor used in the video is LS-PrePost. Element formulations are the math behind how the elements respond to an external load within a finite element analysis simulation. You want use certain types of ELFORMS for specific applications and each has pros and cons. Some element formulations can hourglass however. What is hourglassing? It is an non-physical deformation of the nodes of an element within finite element analysis. I also give a brief overview into hourglassing and how to address it within LS-DYNA. I hope this video is helpful. Let me know if you have any questions in the comments or create a post on the forum: https://feassistant.com/ Here is a helpful shell element formulation overview by Dynamore that gets more into the details if you would like to read into ELFORMs more thoroughly. https://www.dynamore.de/de/download/papers/2013-ls-dyna-forum/documents/review-of-shell-element-formulations-in-ls-dyna-properties-limits-advantages-disadvantages
Views: 559 Unpopular Mechanics
LS-DYNA Tutorials for Beginners: Entity Selection Tips
 
08:30
Here I provide an LS-DYNA tutorial on selection tips with LS-PrePost. This can be helpful for setting up a finite element analysis simulation where you want select on the nodes on the surface of a 3D mesh. I also demonstrate how to select nodes or elements along a path and within proximity of another object. I have provided some time-stamps for the various operations below to make them easier to find. 01:50 - Propagation / surface selection 03:40 - Path selection 04:28 - Proximity selection 05:45 - Save selection to buffer 05:58 - Load selection from buffer 06:25 - Create/modify set 06:55 - Create segment set I've also started a new FORUM specifically for any questions relating to finite element analysis or any processes associated with it here: https://feassistant.com/forums/ If you have ANY question, please stop by, create an account, and post on the relevant sub-forum. I'll 100% comment and hopefully will be able to help you out. I literally just made it a few days ago so let me know if you find any bugs and what-not. Thanks!
Views: 545 Unpopular Mechanics
Material models are complicated: Finite Element Analysis | LS-DYNA
 
10:57
Defining material models within finite element analysis, specifically LS-DYNA, can be difficult if it is not a simple material with commonly known parameters like metal. There are loads of options to choose from when it comes to choosing a material model, but unfortunately, most are too complex to define without material characterization testing and model fitting software. Here I will go over the complexities of defining FEA material models, some beginner tips on what materials to use and what to avoid, as well as some general advice on good practices. As mentioned in the video, below is a link to a new FORUM, specifically for any questions relating to finite element analysis or any processes associated with it: https://feassistant.com If you have ANY question, please stop by, create an account, and post on the relevant sub-forum. I'll 100% comment and hopefully will be able to help you out. I literally just made it a few days ago so let me know if you find any bugs and what-not. Thanks!
Views: 406 Unpopular Mechanics
Over-simplified explanation of force
 
00:49
What is force? Force is a fairly easy physics concept but isn't explained clearly in many cases. Here, I'll try to provide an entertaining explanation of simple force physics in engineering, in a basic and easy to understand way. I will provide an example of a simple physics force problem and explain it with engineering basics. Hopefully by then end of this 45 second video, you will have a better understanding of the different types of force and the physics surrounding the concept. Engineering and physics concepts can be easy to understand once you can grasp the mental image of what is happening. I hope that I can provide more short videos on other basics of physics and engineering. Let me know of any suggestions for my next video and I hope you enjoyed!
Views: 176 Unpopular Mechanics