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How to imprint a surface mesh from a pressed assembly
I have a surface mesh on a component that is pressed against another surface. I would like to avoid creating contacts between these two parts and want the mesh to be imprinted onto the unmeshed surface. When I try this with imprint it cannot fulfill my aim as the unmeshed geometry is a CAD file. What are some workarounds…
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How to automatically improve elements failing min size criteria
I have generated my 2D tetra shell mesh which is of relatively good quality in terms of skew, aspect ratio and jacobian. I have 99 elements that would not meet my minimum size requirements and have also selected their adjacent elements. Below is just a few of them I get an error by rebuild that a size (0.16) conflicts with…
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Altair Flux 2023.1 crashes after creating 2D-Curve
Description: Hello, I'm doing the Tutorial: Inductance Computation (6 Magnetostatic Non-linear case) (with my own geometry, everything else is the same as in the tutorial) There are 3 ways described to compute the inductance. Linear Inductance Energy Inductance Local Inductance For some reason my Flux crashes every time…
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in this multiport (2 port) antenna how to fix the excitation of port 2? FEKO V2023.1
Here, in port 2( near the t shape slot at the bottom) I am getting about 0dB reflection, Can you kindly check this model and fix the excitation of feed 2?
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Is there a route to dynamically update set definitions
I use sets to define groups of nodes & elements for loads, constraints, output sets etc. is there a mechanism to dynamically update these prior to a run, for example all elements with a particular property/material, or entities within a component. As I develop my model I want to spend less time checking / defining sets.
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How to check active reflection coefficient for all ports individually for the array antenna?
Hi, I have a four-port array antenna, where I used the active port excitation method using the "Sparameter tab", now my confusion is what are the actual active reflection coefficients in POSTFEKO? Does it refer to voltage source 1,2,3,4? Or, the active reflection coefficient results should be found under the S parameter…
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Export .inp file from SimLab
Instead of running the CFD simulation using Simlab GUI, can i instead run it using Altair compute console? if i can, how to generate the Acusolve .inp file?
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CFL number in Post-processing
HI everyone, I want to investigate the effect of timestep size based on CFL number (from 0.5 - 10). May i know where can i get the value of CFL during post processing? I only found "CFL timeInc" in the log file but i dont think this is the CFL value. I am expecting to see average, min and max CFL.
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Why do the tracks 'explode' at the beginning of my MotionView vehicle simulation?
Hi, I am trying to run a simulation in MotionView for a tracked vehicle towing another tracked vehicle. When I solve the run, however, the tracks on both vehicles seem to 'explode' (please see the attached short video). Note that this problem occurs when simulating a single vehicle, too. I am running a Static + Transient…
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How can I export this as step file so that the patches are visible in my step file?[FEKO V.2023.1]
Hello, I am trying to export this model as step file, but every time I export this, no patches are visible in my step file. Its a conformal patch array, four of the copper patches are totally invisible when I am exporting it into the step file. I am attaching here both the .cfx and step file , please help me out.
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MotionView's track builder for a rigid contact soil interaction doesn't keep meshing from HyperMesh.
Hi, I am trying to simulate a tracked vehicle on a rigid (non-deformable) road in MotionView. I have set up my vehicle using the process given in the Tracked Vehicle Modeling tutorial (link: Tracked Vehicle Modeling) but diverge from the tutorial at the 'Soil Interaction' step (step 3.10). Here, I use the 'Rigid Contact'…
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How can add wire probe at the center of the patch transmission line here?[Feko v 2023.1]
Here in this model, I have two problems How to add a wire probe along the vertical line center of the patch? I can't create the line above the patch due to a coordinate problem. How to remove the air gap coming inside the patch when I used "project" tab to bend above the substrate? you can see one corner of the patch has…
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*** ERROR # 1996 *** in the input data: All entries have zero scale.
I have checked the materials, loads, etc. input and cannot find a zero scale entry. I am doing inertial relief, so there is no constraint. What do I need to change?
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How can I remove the hole in ground plane and add the wire probe in this step file ? [v 2023.1]
Here I am attaching the Step file of a probe fed microstrip patch. This step file already have a cylindrical probe attached with the patch. Also there is a hole in the ground plane of the antenna. How can I remove the cylindrical probe from this file and can add wire probe? How can I fill up this ground plane hole in this…
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POWER CALCULATION FOR array antenna(V 2023.1)
Hello I am using an "active port" simulation for a 4x1 conformal probe-fed antenna array. My question is: when we select the voltage source for each port (see the screenshot), it is 1 V for each port in my array. Then what is actually the input power of my total array ? For doing the active port simulation, see my other…
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EDEM CUDA API：How to specify particle names in an EDEM CUDA file
I have developed an EDEM body force API whose function is to apply force to particles named "FIX". My API code is correct, but I encountered an issue when writing the .cu file—the .cu file fails to recognize the particles named "FIX". I would like to ask how to implement this function in the .cu file? I have attached my…
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[EDEM]The PBF API causes particles to pass directly through the geometry
Hi, everyone! When the particles are subjected to an inward particle body force, they traverse the cylinder geometry without any collision, as illustrated below.The zip file is the complete code. The code is as follows:
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How to check the E-field value for calculating power handling capability of my antenna?[V 2023.1]
Hello, I want to check the power handling capability of my conformal array antenna; for that, I created the near-field surface from the top of the patches to the cylindrical ground plane. I want to check the electric field value at the top of the patch surface, the dielectric layer, and the ground plane, because these…
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How to Control Geometric Display Accuracy in hypermesh 2023.1
How to Control Geometric Display Accuracy in hypermesh 2023.1
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Flux2D: Coupled Magnetic-Thermal Simulation with Moving Geometry
Hello. I’m working on a project in Flux2D 2023.1 which involves an induction heater that heats a moving laminated core as shon in the picture below. The application is Steady-State AC Magnetic field coupled with a Transient Thermal analysis with a 2D axisymmetric domain. I want the laminated core to move downward over time…
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Mesh ratio size
hi everyone, case: 2D transient, flow over cylinder at Re = 20 000 - 100 000, SST Questions: What is the rule of thumb for mesh ratio size from edge to area of interest (nested mesh) to global mesh size? Should i use mesh ratio 1:2? For example, edge size = 1e-3 meter > nested mesh = 2e-3 meter > global = 4e-3 meter? is…
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How can I reduce computation time and memory to run this array file ? [FEKO V. 2023.1]
Hi, Currently, I am running this Feko file using MOM with parallel solver, but it is taking more than 48 hours to complete with continuous frequency points and fine meshing. Is there any hybrid solver you can suggest to me in FEKO to run this file with less memory and less amount of time ? [I need fine meshing and a…
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Modeling Hinge Joints in HyperMesh/OptiStruct for Linear Static Analysis
I am working on a linear static analysis involving hinge joints, as shown in the attached image. I have attempted multiple modeling approaches in HyperMesh and OptiStruct, but I am not getting realistic stress results. Approaches tried: RBE3 + CBEAM: I modeled the hinge joint using RBE3 elements for load transfer and CBEAM…
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How to resolve the error 31027 for this file?[fEKO v 2013.1]
hi, In some super computer I am getting result for this model without any error, but whenever I try to simulate this file in my own PC , once it showed license error, next time it showed memory error, and now it is showing error 31027 with the warnings 31096 that -Adaptfeko has reached minimum frequency stepping, results…
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Is there a fast way to create lines in HM 2023.1
Hello Everyone, It may be a simple question: I'm looking for an efficient method to create a line in HyperWorks 2023.1. Specifically, I need to generate a line that originates from a designated starting node and extends for a specified length, with its direction defined by two other existing nodes. For example, consider a…