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    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 

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Found 3 results

  1. Hello, I am running lattice optimization on certain shapes that I would like to 3D print. I was wondering if a separate tool or software is required/can be used to make the obtained lattice structure manufacturable? What would be the method for manufacturing the varying lattice densities? Thank you, Muge Candogan
  2. KTex LayUp is dedicated to representing one of the composite materials manufacturing processes: the molding or RTM process. Its main objective is to automatically set-up a ready-to-run finite element model simulating this process. To do so, two input parameters are needed: the fabric and the mold. Some molds and fabrics are included in the tool database, but bespoke ones can also be created. A video regarding mold creation will come later. When selecting a fabric, two options are available: REV or Size/Shape. The REV option only needs the Representative Elementary Volume of the fabric. This REV is then duplicated and translated as many times as needed to be bigger than the mold. But the final geometry of the fabric to be molded will always be a square. The Size/Shape option needs the geometry of the fabric to be molded. This fabric can be a stack of several plies. It can feature several plies of different geometries, thicknesses or patterns... Anything is possible in order to represent the real plies that are to be molded. The user is free to define the fabric, but the user has to be careful as mistakes will not be detected. The attached video gives an example of the difference between the two options. KTexLayUp_REVvsSHAPE.mp4
  3. Hi, I am trying to implement in an Optistruct optimisation a model that will help me to define a specific objective function I need for my work. This model needs some plies geometrical information (for example, area and perimeter of each ply generated) as input in order to evaluate manufacturing cost related to the laminates at each iteration of the free-size optimisation. I think I have two ways to do that: 1) to make Optistruct printing the .fem output file at each iteration and create an external script able to extract the geometrical parameters I need from the .fem file in order to calculate the external response (I will need DRESP3). The creation of this external script, extracting area and perimeter of the plies, does not seem to be so trivial. 2) to obtain the geometrical info inside Optistruct and create the response I need using DRESP2 along with equations internally created by myself. I definitely prefer the choice 2) but the issue is that I do not have any idea on how to get these geometrical info as responses in Optistruct. I would greatly appreciate any help to solve this issue or any suggestion on the script creation to solve the problem following the choice 1). Thank you in advance for any support. Alessandro
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