geardyn.1
@geardyn-1
Lab Tech
Joined: November 9, 2019 8:02 am
Last seen: January 18, 2024 4:55 pm
Topics: 3 / Replies: 33
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RE: How to Assign Displacement Load on Sugarcane MIlling Simulation

your boundary conditions might not be correct . Also check on the contact card parameters USE *BOUNDARY_PRESCRIBED_MOTION .

1 month ago
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RE: Rigid To Deformable Command

@yoshimori3456 : Here , the error is specific on *MAT_72 . i had look into the file you had shared . the material data is not complete. That's the r...

3 months ago
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RE: *INITIAL_CONTACT_WEAR data is not written in dynain file

@negativevolume : Thanks for the reply . . . Appreciate it I was not able to resolve the issue with the version we had . Also the wear analysis m...

3 months ago
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RE: Access Violation Error

1) Check for duplicates 2) Check for free rigids or other elements 3) Check all contacts again 4)check material properties 5) sometimes part g...

4 months ago
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RE: WB Ls Dyna PreStress Bird Strike

@mr_lazlo : there are two methods to impart prestress in lsdyna : 1. Control dynamic relaxtion 2. Interface springback to get dynain. It depen...

6 months ago
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RE: Changing units causes contact to fail

hi , just by changing the units , there should be no change in the contact behaviour. check for Master and Slave definition. Also try to use MOR...

6 months ago
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RE: Define EOS in LS-DYNA

hi LuBo, An equation of state (EOS) is equivalent a fluid model. Specifically, an EOS is a fluid model that takes a molar composition (z) and predic...

6 months ago
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RE: Bird impact on rigid plate - Contact Issue

include * CONTROL_SPH card . . . ( here NMNEIGH should be varied accordingly ) Also your Lsdyna Version matters.

2 years ago
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RE: Contact type to choose for bird to parallel plate impact

also check out this link which is similar to your work for additional details :

2 years ago
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RE: Axisymmetric element

impact between a projectile and a plate is highly non-linear problem and requires a great care to achieve convergence . instead of using 2D axisymmetr...

2 years ago
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RE: Contact Penetration

use *CONTACT_INTERIOR or USE Single surface contact as well

2 years ago
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RE: Contact type to choose for bird to parallel plate impact

Eroding contact should work fine , check the parameters in the contact card.

2 years ago
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RE: Advice for entering a CAE field

your statement that companies use primer / hyperworks tools ONLY is partially correct. while many automobile companies use mentioned tools in addition...

2 years ago
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RE: What are the different criteria for element to get erode and how la Dyna algorithm works in material errosion

mat_add_erosion works well with Metallic materials. it works on : Stress dependent erosion strain dependent erosion Time dependent erosion

3 years ago
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RE: How to learn LS-Dyna (LS-Prepost)

Contact me on geardyn.1@gmail.com for other models/ tutorials.

3 years ago
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