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I am doing model of Composite+Steel for 3point bending simulation.But still have problems on contact
I am doing with Radioss. I have uploaded my model's results. Can you please kindly check for me.
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OpenRADIOSS
Can someone provide information on OpenRADIOSS, I use HPC to solve RADIOSS models with multiple nodes/cores. Is OpenRADIOSS compatible with HPC's?
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Can EDEM couple with the explicit algorithm of a structural solver other than OptiStruct?
I have a polyurethane screen panel. Using MotionView, I’m not able to reproduce its motion, and the panel also needs to interact with bulk material. Therefore, I am considering using OptiStruct as the solver. However, I feel that OptiStruct does not provide as many explicit analysis control options as Radioss. So I would…
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Wind fluid structure interaction
Hii everyone, I have this long pole subjected to wind loads. I want to perform fluid structure interaction between wind and the pole. The pressure regions around it and the structure response and vortex shedding too. I need a tutorial for that.
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Composite tennis racket in Radioss
Hi everyone, I am currently working on modeling a composite tennis racket to simulate the impact of the ball with the racket strings. I have a few doubts regarding the simulation of the strings: should I represent them using 1D beam elements ? Also, what type of contact should I implement between the strings? Would an…
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Segment face not exported correctly
Description: I am trying to use the new version of HyperMesh 2026 to create a segment set for the faces on my obstacle, but it is not working. When I export the model to a Radioss file, the segment set does not appear there. Instead it goes under sets/general. Could you help me understand what might be causing this issue…
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Radioss - Composite thermal expension and CornerData
Hello, With Radioss 2025 I have two specific questions about composite elements : The composite is modeled using 3D P6_SOL_ORTH elements with LAW12. Is it possible to have a different coefficient of thermal expansion (THERM_STRESS) for each of the 3 composite directions? For post-processing with HyperView 2025, how do I…
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Gasket pretension analysis
Hii everyone, I want perform pretension analysis on gasket for checking sealing and gasket bulging when loaded. Since gasket is non-linear I tried Radioss. I'm new to that. I tried copying RD-HM-T:1010 tutorial. It started confusing at start and at last I made something. Plates, gasket and bolts using 4 node tetra elements…
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Failure of 3D plies of composite
Hi ! I'm doing a composite model, using the law12_3D_COMP in RADIOSS ans i'm trying to model its failure. The impactor is a rigid ball and i have been following the example named : "Modeling of Hypervelocity Impact in Composite Laminates with Altair Radioss". In my case, I don't want to use orthstrain for the failure but a…
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BULLET IMPACTING A PLATE ISSUES
Hi, I'm trying to do a model of an 9 mm bullet impacting a laminate on RADIOSS. I'm only using the lead core of the bullet with the LAW49 STEINBERG (Hyd_JHOOK and jonhson cook are also modeled). The laminate has got the law12 and is only a 3D block right now. Therefore, i tried using Finite Element only, then SOL2SPH and…
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Hourglass Issue
Hi, I have a RADIOSS model in which an electronics unit is modelled as 1st order shell elements. This component is modelled to have an initial velocity and impacting a rigid wall. It looks like there is an hourglass phenomena occurring and the solve is killed with an error that says "energy error limit reached". I have…
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Modeling 3-Point Bending Test of Sandwich Panel: OptiStruct or Radioss?
Hello everyone, I am working on a FE simulation of a 3-point bending test on a sandwich panel using HyperMesh 2025.1. Model Details: Components: Top and bottom face sheets + different types of core formats Material: All metallic parts. Interface: The face sheets are bonded to the core crests using a resin layer.…
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Low absorbed energy in composite crash simulation
Hi guys! I'm running a crash simulation of a composite Impact Attenuator, and I got the simulation to run with, what looks to me, good contact interaction and composite failure mode. The problem is the energy absorbed during the crush, It's too low. At the beggining i thought the problem might be an inconsistency in the…
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Exterior acoustic simulation of Motor to predict SPL using Surface velocity data a input?
Hi, I have a surface velocity data of E-motor/Engine generated by third party MBD solver in .pch file format. I would like to use this data as a excitation to predict the exterior noise at 1m distance microphones. I have looked at the documentation of IE, RADSND & APML methods in optistruct. Surface velocity required for…
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Radioss error message
Any help will be welcome. I kept getting the error attached. My computer storage is okay and i have deleted unwanted files just in case. Thanks
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Radioss跌落仿真，四面体单元的设置建议。
200mm直径的离心风扇跌落仿真，使用四面体网格建模，四面体单元属性应该如何设置更准确
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Radioss SPR Simulation: Unexpected Material Failure and Punch-Through Issues
Hi everyone, I am working on a Self-Piercing Riveting (SPR) process simulation using Altair Radioss (HyperMesh for pre-processing). I am experiencing an issue where the rivet (36MnB4) punches through the top sheet (Al5182) without proper penetration and interlock formation. Instead of the rivet flaring out and creating a…
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Is it possible to modify the torsional stiffness (k) of a Rigid Body or RBE (Rigid Body Element)?
Hello everyone, I am working on simplifying a transmission model to optimize calculation times. I have extracted a sector composed of two teeth belonging to their respective crowns. Currently, I have linked the lateral and internal faces of the teeth to a Rigid Body connected to the center of the crown. However, this…
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PhysicsAI ignores impact velocity but detects geometry variation
Hello, I have a problem regarding PhysicsAI. I have a crash tube model that is being deformed, and I would like it to generate reasonably reliable predictions for varying radii and impact velocities. I created a dataset with different radii and, for each radius, two different impact velocities (8 m/s and 5 m/s). So far,…
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Drop Simulation
Description: Kindly add description here Product/Topic Name : Kindly include the product name, version if applicable here. Also, Don't forget to tag with the product/topic related to your question. *Note from Community Team - Once you receive a satisfactory answer on your question, kindly mark your answers as "Accepted" so…
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Radioss RWALL constrain axis
Hi Is there a way in Radioss to constrain the RWALL in say all DOF except x? I would typically use /BCS/ , but unsure how to define the set with the RWALL- any help would be greatly appreciated- thanks! /RWALL/PARAL/1 #rwall_title RIGID_WALL # node_ID Slide grnd_ID1 grnd_ID2 1295724 2 0 0 # Dsearch fric phi ifq 200.0 0.2…
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Radioss RWALL velocity time history
Hi , I have a rigid wall with velocity and mass (see below) - is it possible to extract the time history (velocity, displacement etc.) of the rwall? My understanding is only force is output from the TH/RWALL but I would prefer to be able to plot the velocity without performing math functions on the force curves. Thanks !…
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Radioss thermoplastic polimers material card at different strain rate
Hello, what is a material card for Radioss explicit solver if I have a thermoplastic polimer (for ex. PA6+30GF) at different strain rate? As you know the elastic modulus change from quasi-static tensile to higher strain rate, in fact increase.. due to increase the stiffness of the material if I stretch at high velocity. Is…
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[URGENT] RADIOSS SDK Error: /MAT/USER01 Routine Not Found in DLL (Shell Law)
Issue Description: > I am encountering a termination error in the RADIOSS Starter when attempting to use a custom material law (/MAT/USER01). Despite having the compiled DLL in the working directory and specifying it in the solver console, the solver fails to find the user interface routine. Error Log: > ** ERROR IN USER…
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Radioss で摩擦を熱に変える例題
はじめに Radioss の接触 /INTER/TYPE7 と /INTER/TYPE25 には、摩擦エネルギを、熱エネルギに変換して、熱伝導解析の熱源とすることができます。 本記事では、簡単な例題を一つ示しながら、入力内容について説明していきます。 例題と説明 ダウンロード: 摩擦で熱が発生している様子。 本例題は、こちらの公式例題を元に作りました。 https://help.altair.com/hwsolvers/rad/topics/solvers/rad/thermal_analysis_example_r.htm この例題は、摩擦を熱には変えませんが、接触による熱伝達 (/INTER/TYPE7 内で設定) と、その熱伝導…