RE: [LS-DYNA2] K file includes Mat_181 material card.

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Aug 17, 2023, 10:39:23 AM8/17/23

to Hamza Güngör, LS-DYNA2

Dear Hamza,

Please see if the following are of some help:

Finite element models of quasi-static material characterization processes were developed to assess

hyperelastic material models available in LS-DYNA and ensure proper user input of data and parameters.

Two material models were investigated: *MAT_77_O and *MAT_181:

Bondy, M., "Development of Procedures for Accurate Finite Element Modeling of the Dynamic and

Quasi-Static Performance of Automotive Chassis Components Incorporating Hyperelastic Materials",

Master's Thesis, Department of Mechanical, Automotive, and Materials Engineering, University of

Windsor, Windsor, Ontario, Canada, January, 2013.

simple example

Bird strike analysis using a rubber projectile with rate effects impacting a rigid plate. The rubber

projectile is used to represent the "bird material" and is modeled using *MAT_SIMPLIFIED_

RUBBER (MAT_181). Gelatin rebounds elastically (until tension failure). Gelatin appears to

soften at higher strain rates. These effects are included in the model. Two types of force vs.

change in gauge length at different strain rates are tested.

Sincerely,

James M. Kennedy

KBS2 Inc.

August 17, 2023

From: ls-d...@googlegroups.com [mailto:ls-d...@googlegroups.com] On Behalf Of Hamza Güngör
Sent: Thursday, August 17, 2023 6:48 AM
To: LS-DYNA2 <ls-d...@googlegroups.com>
Subject: [LS-DYNA2] K file includes Mat_181 material card.

Hi Group. Who has k file which includes mat_181 material card. Please share with me. I am new to ls dyna. Prepared k file will be helpful for me.

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