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Found 8 results

  1. I have a force vs displacement curve(curve is not linear) .I need to apply force using this curve .How can I acheive it. Kindly suggest me.
  2. Hi all, I have been working on a model lately and it can best be described simply as a 2-D flat plate. I've been running some fairly simple tests just to see how the solver deals with loads applied to a system and how changes in these loads affect the end (optimized) result. One test I've wanted to try yet haven't figured out yet is the linear distributed load across the top plate. Thus far I have only used constant distributed loads (Ex: 50 N force across all of the top edge nodes). When searching through these forums and online, I've heard of two ways of going about this. The first is using the "equation" tab inside the force panel. My model is set up in the (x-direction and y-direction) so I'm not entirely sure how the load should be applied as an equation. I've tried a few equations of my own (x, x^2, and 2*x) but haven't had any luck. The second method (which I heard by word of mouth) was to use Excel in a way that accounts for every node one would apply a load to along with the corresponding value of the force at that node. I know much less about the specific process for this one so if anyone has any direction here, that would be fantastic. All and any advice is welcomed and thank you in advance. Please let me know if you need more details about the model if it would better explain the current situation! Dylan Stelzer [:^D]
  3. Hi, I have another post about this same topic but I wanted to create a new one in order to keep the problem concise and detailed as possible. My goal is that I want to be able to create a constant force load over a curved surface (specifically, the upper half of a semi-circle) and have every force load be normal to said surface while utilizing 2-D shell elements. Currently, this is how I am doing it. 1. The geometry (and mesh) is the upper half of a semi-circle with a radius of ~4cm (average element mesh size is 0.05cm). *I have been previously doing this model with only horizontal and vertical forces on the arced surface (never combined) E.g. Horizontal forces in the +y direction on the left third of the arc, vertical forces in the -z direction on the top third of the arc, and another set of horizontal forces in the -y direction on the right third of the arc. 2. My boss asked me to combine horizontal and vertical forces in such a way that I will have a (let's just use an easy number) constant 100N force applied to every node on the arc in a direction normal to the surface of said arc (this is hopefully supposed to simulate some sort of compression-like force load). 3. Selecting all of the nodes, I know there are 252 of them on the arc in total. E.g. This makes sense because the length of the arc is equal to s = pi*radius = 12.5664cm and Total # of Nodes = s/.05cm = 252 nodes (approximately) 4. Combining horizontal and vertical forces at each node just requires two simple equations and a little bit of Matlab code *thetaSEP = 180deg / 252 = 0.7143deg (approximately) and hypotenuse = 100N Iteration 1 (Node 1): cos(thetaSEP) = horizontal/hypotenuse = 100N -sin(thetaSEP) = vertical/hypotenuse = 0N Iteration 2 (Node 2): cos(thetaSEP) = horizontal/hypotenuse = 99.9922N -sin(thetaSEP) = vertical/hypotenuse = -1.2466N etc. etc. etc. *Horizontal equation changes to -cos AFTER the 126 iteration 5. After doing this (and hopefully my math is correct...), I have two vectors, H = [1 x 252] and V = [1 x 252] which have been transferred into Excel (I just like Excel a little better than Matlab) which represents the horizontal and vertical forces that I need to combine at each node to create my constant 100N force load along the arc. ***6. Here, I did my first model by hand entering all 252 force vectors, one at a time. ***This is where I'm hoping someone can give me help on how to automate the process from this point into applying these loads across the nodes I have selected in HyperMesh with correct values (which leads to angle as well). If anyone has any help or details (or more resources for that matter) that I can try to make this process faster, that would be much appreciated. User: Q.NGUYEN-DAI has already given me some great advice but to be completely honest, I've never used Tcl in my life nor have I really programmed that much. Even if someone has a more efficient idea of doing this, could you please explain where I'm making this harder than it needs to be (I understand the "one by one" by hand part is the serious problem)? Thanks ahead of time and sorry for the long post. Attached is an image describing the problem a bit more if you need some visual clues as to further explain my situation. Dylan Stelzer
  4. Hi, I had a question concerning the integration of an array from Excel (or for that matter, any type of data where it is a string of numbers) into a boundary condition loading in HyperMesh. I have two arrays of length 126; is there any way to apply them to each of my 126 selected nodes in my HyperMesh model (it is composed of 2-D shell elements)? I've attached a picture of a section of the arc if that helps. I am trying to divide up a normal load over an arc into horizontal and vertical forces efficiently and quickly. If anyone has any suggestions, that would be greatly appreciated. Thanks! Dylan Stelzer
  5. Hi, This should (hopefully) be a quick Q&A. I have a surface (2-D meshed shell elements) and would like to apply a force constraint to the nodes on the mesh of this surface. My only wish is that the vector of the force constraint be perpendicular to the surface (like constant compression or tension at all points of the surface). Does anyone have experience in this? I was told equations might be where to start but I'm not entirely sure how to utilize that as I'm fairly new into exploring anything other than constant loads. I've attached an image file for better reference of the surface. Thanks! Dylan Stelzer
  6. Hello guys, I am building a small size model with many forces close to each other, and there is a white label "FORCE" next to the red arrow that is the force applied. For the publication, I need diagrams with a clear view of the arrows, and that is impossible due to all the force labels overlapping each other. I have tried a lot of settings but that white force label will not disappear. Any ideas? Thanks! PS: the "label loads" option in the forces menu does not affect said label, it only adds the magnitude of the force next to the "FORCE" label.
  7. Hi... I am a new user of Hyperworks. I want to analyze the centrifugal force and the depending stresses and displacments. My part is a little bit like a CD. I want to this in 2D. My Questions> 1. Which element should i use? 2. How to create the constrains? 3. How the creat a cylindrical coordinatesystem? Best regards Alex
  8. Hello, I am simulating a three point bend test on a composite sample. Can someone instruct me to how I can plot a force/displacement graph and force/stress graph? At the moment I cant find force as a component to plot when I attempt to use build plots from HyperGraph. Extra: Is it possible for me to simulate a range of forces to be applied on the sample at once, such as parameter sweep? Many thanks
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