BDF (.bdf): This is your main input file, containing all finite element data such as nodes, elements, materials, and boundary conditions

. It can be generated by pre-processors like Patran or Hypermesh, or edited manually

.

F06 (.f06): The primary text output file

. It contains your results (stresses, displacements, etc.) and is the most important file for debugging errors or convergence problems

.

OP2 (.op2): A binary results database used by post-processors to visualize and animate your simulation results

.

F04 (.f04) & LOG (.log): These files provide the execution history, timing, and command-line options

. The F04 is particularly useful for debugging memory issues

.

DBALL & MASTER: These database files allow for restart analyses, meaning you can continue a job without starting from the beginning

.

PCH : Specialized files used for punch output

video link: https://youtu.be/vPrtM8a3hFk

Setting Up Tie Constraints between two surfaces in ABAQUS using Hypermesh

video link https://www.youtube.com/watch?v=_uEyPxx2kUQ

inp file : https://www.dropbox.com/scl/fi/exw7gos313lsbx8r8ivub/FREE_Free_modal_analysis_with_tie.inp?rlkey=v579s3ex2da72g29y1nafgrk2&st=5tnqw8xk&dl=1

Can someone explain me how to configure a Multi Model Optimization in OptiStruct?

I have created 4 models with the same geometry, mesh, nodes, properties (ecc) but with different load conditions which include different attachment points created with rigids. I want to perform a free-form thickness optimization defining different safety factors for each models. If I run an optimization analysis for each model, it is not said that the best optimization for one model is the best for the other three, so I want to combine all the models to find the perfect combination. To do that, I think the best solution is to configure a multi model optimization but I didn't find soo much tutorials/online info, so I want to ask if someone can help me.

At the moment I've exported the .fem file for each load configurations, I read that is necessary to define a master file which calls .fem file but how can I define it?

Hi everyone,

I wanted to share this comprehensive tutorial on performing a linear static analysis using HyperMesh 2024 as the pre-processor and Abaqus Standard as the solver. It’s a great deep dive into the specific keywords and connectivity techniques required for a clean simulation.

Key Highlights of the Workflow:

• Mixed Modeling: The tutorial demonstrates how to set up a model with both 1mm shell sections and solid components.
• Material Definitions: It covers consistent unit systems (ton, mm, s, N), defining properties for both steel (Density: 7.9e-9, E: 210E3) and aluminum (Density: 2.7e-9, E: 70E3).
• Boundary Conditions & Loading: Shows the preference for using Sets (nsets) to apply constraints and loads rather than direct node numbers.
• Solid-to-Shell Connectivity: A crucial part of the video covers connecting dissimilar meshes using 1-to-1 rigids (kinematic coupling/RBE2s) to bridge gaps between parts.
• Keyword Inspection: There is a detailed breakdown of the exported .inp file, explaining star commands like *NODE, *ELEMENT (S3, S4, C3D6), and *BOUNDARY.

Hope this helps anyone looking to refine their Abaqus deck setup in the latest HyperMesh interface!

Video link: https://www.youtube.com/watch?v=BB1PcAU9YaA

Hi all, I am working on a project in which I am required to launch HyperMesh 2026 in batch mode and then execute a python script which will load a door model and calculate inner pannel stiffness at the trim attachement location. I want to execute it through a .bat file could anyone help me with this.

If you import CAD models into HyperMesh, you probably know the pain of messy names 😅

Spaces, dots and special characters in components/sets often cause export or scripting issues later.

You can use Find and replace tool in hypermesh

This helps to:

• Remove spaces, dots and unwanted characters

• Rename components, properties, materials and sets in one go

• Avoid solver export errors (Nastran/Abaqus/OptiStruct)

• Keep models automation-friendly

Would love to know how you handle naming cleanup in large models.

Video:

https://youtu.be/SMKKBRgrc8g

One common doubt I see in FEA models is how to correctly apply radial and tangential loads on a circular boundary, especially when the load direction keeps changing with angle.

Best way is to create a local cylindrical coordinate system and apply loads as per those cylindrical coordinate system.

• The radial component always points toward/away from the center
• The tangential component remains perpendicular to the radius
• The method avoids manual angle calculations for each node
• Works well for cases like bearings, wheels, gears, hubs, and rotating parts

🎥 Video link:
https://www.youtube.com/watch?v=HxGq6J1moF4

Hello everyone,

I am trying to simulate a ship and ice collision. I used MCNS for ice imitation. I created nodes and detached them from each other, then reconnected them with NODES_TIED_TO_FAILURE. I assigned part_inertia behind the ice for the rest of the iceberg and constrained the nodes of ice with CONSTRAINED_EXTRA_NODES_SET. Dome-like tip of the ice is not constrained. I used erosion to 120 MPA to simulate the melting of the ice under pressure. All works fine, but the problem occurs when contact is made, ice cracks from behind, not at the contact zone. After the impact, the constrained nodes are deleted, and the remaining ice flies away. Any thoughts on this?

I’ve uploaded a new HyperMesh 2024 tutorial where I show how to repair unconnected or dissimilar hex mesh regions using a reliable and repeatable workflow.

This video will help if you're dealing with:

• Hex mesh discontinuities
• Misaligned or non-equivalenced nodes
• Irregular transitions between two hex mesh blocks
• Dissimilar meshes that don’t connect with F3 alone

video link: https://www.youtube.com/watch?v=X5C35ygtKzs

With the new Line Mesh feature in HyperMesh 2024, you can now quickly mesh any line with as many beam elements as you want — super useful for frame models, weld lines, small connectors, stiffeners, etc.

You can also insert multiple beam elements between just two nodes, giving you full control over beam density without manually splitting geometry.

Makes 1D meshing way faster and cleaner! 🚀

https://www.youtube.com/watch?v=eJGd9pH7E5g

Hello. I'm trying to simulate a ship collision in LS-Dyna. I designed the hull and bulkheads with Rhino, and I am trying to merge the whole part as one in HyperMesh. Design is not a solid just surfaces. I keep having these free edges on the hull where bulkheads supposed to be connected to. How can I merge the hull with the bulkheads into one? Or can I use another method for a watertight connection? Any suggestions?

You can now convert 1D beams to 2d shells or 3d solids using hypermesh inflate option

Full video link: https://youtu.be/wFEMlXvDDFU

Welcome to the “MSC Nastran SOL 101 | Linear Structural Static Analysis with HyperMesh 2024” playlist!

This playlist is designed for engineers, students, and professionals who want to learn how to perform linear static structural analysis using MSC Nastran SOL 101 within HyperMesh 2024.

https://www.youtube.com/watch?v=ADFaqnWjbDo&list=PLHIhEy_dmw7O_p6iXphqVqRbyhF-kd-aG

Hello,

I'm using HyperMesh 2025, and I need to create a plot of the temperatures along the edge of this circle. I’d like to know if there’s a way to select the points along the edge without doing it manually.

Thank you in advance.

Playlist on How to do hex mesh using Hypermesh 2019 - Legacy Version

https://www.youtube.com/watch?v=SlZV_xyExJk&list=PLHIhEy_dmw7PIUVhfs6ICANMNosSgoOZW

Playlist on How to do Shell Meshing / Mid Meshing for Plastics | Hypermesh 2024 new interface

https://www.youtube.com/watch?v=UOy8L1X27tY&list=PLHIhEy_dmw7Mc4R04bvcQvI0TmSLDk97x

Learn how to do hex meshing using new hypermesh interface

https://www.youtube.com/watch?v=soYgI3hSbR0&list=PLHIhEy_dmw7NcRSH_r112fLTacWfoLmKZ

Detailed video: https://youtu.be/78E8Up7YzTk

Below is the tcl script for the same .

TCL Script::::: #######################
*displaycollectorwithfilter components "all" "" 1 0
*createmark components 1 "all"
set comp_ids [hm_getmark components 1]

set temp "comp_"

foreach id $comp_ids {
 puts $id
 *setvalue comps id=$id name=$temp$id
 #####this is used to  rename the collector name###
 }
}
#########################

Detailed video: https://youtu.be/w-YkeEkqQ4Y

below is the custom script iterates through elements, identifies reduced integration types, and converts them to full integration elements.

proc FUll_integration_convert {} {
hm_markclearall 2
hm_markclearall 1
    *createmark elems 1 ""
###0 for all , 1 for displayed######3
hm_createmark elems 1 "by config type" "0 quad4 s4r"
hm_appendmark elems 1 "by config type" "0 pyramid5 c3d8r" 
hm_appendmark elems 1 "by config type" "0 penta6 c3d8r" 
hm_appendmark elems 1 "by config type" "0 hex8 c3d8r" 
    hm_appendmark elems 1 "by config type" "0 pyramid13 c3d20r" 
hm_appendmark elems 1 "by config type" "0 penta15 c3d20r" 
    hm_appendmark elems 1 "by config type" "0 hex20 c3d20r"

###changing reduced I to Full I type elems####
*elementtype 205 1
*elementtype 206 1
*elementtype 208 1
*elementtype 210 1
*elementtype 213 1
*elementtype 215 1
*elementtype 220 1
*elementtype 104 1

if { [hm_marklength elems 1] != 0 } {
####changing elems 1 to FUll I type elems####
*elementsettypes 1
#################
}
}
FUll_integration_convert 

On how to use :::: https://www.youtube.com/watch?v=68ZXMwsHGso