LS-DYNA Bytes

Unloading in MAT_FABRIC (MAT_034)

Nature by Numbers

Shell, Solid and Beam Formulations for Explicit and Implicit

Modeling rigid bodies

Happy New Year !

Significance of IGAP Parameter in *CONTACT in Implicit Analyses

Marsha Victory, Thank You For Your Blog Hosting Sponshorship !

Boundary prescribed motion and Contact

LS-DYNA 971 Release 4 Manual Available for Download

LS-OPT 4.0 is now released.

Mass calculations for Discrete Beams

Discrete variables in LS-OPT

Fast Debug of LS-OPT driven Optimization Problems

Free Limited LS-DYNA Version to Assist Displaced Workers

Multi Solver Run in LS-OPT

Packing LS-DYNA Input Files for Easy Distribution (v1.1a)

Damage modeling using GURSON

Characterizing plasticity material models using data from test

Optimizing monotonically increasing load curves

Packing LS-DYNA Input Files

Termination due to Added Mass

971 Release 3.2 is Now Available

Killing LS-DYNA Jobs

Nice article on Inertia Tensors

10th LS-DYNA Users Conference

Curve Offset in LS-DYNA

Initially in Contact – TIEBREAK contacts

New LS-OPT Support Site

Ten Recommendations to Improve Contact Stability for Explicit and Implicit Simulations

LSDYNA Simulation Notes

Quaternions for 3D Graphics

SLURM: A Highly Scalable Resource Manager – Free and OpenSource

Internal Contact for Solids using *SET_SEGMENT_GENERAL

TIEBREAK Example

RCB Decomposition and LS-DYNA Built-In Intelligence

Interior Contact for Foams, Honeycombs and Rubbers to eliminate Negative Volumes.

Reduce D3PLOT File Size for RigidBodies

Improving Load Balance in MPP-LSDYNA for ALE and SPH

D3VIEW 2.0 Beta Released

Timestep Calculation

Non-Structural-Mass (NSM) Lumping in LS-DYNA

Yield Stress, Strain-rate Dependency in MAT_024 and the significance of SIGY

d3View v2.0beta – LS-DYNA Simulation Data Manager – Releasing Shortly

Force Deflection to Effective Stress vs Effective Strain

Initializing Velocity

Simulation “Pack” to Perform Design or Numerical Variable Studies

Tiebreak Example # 1

*DEFINE_CONTACT_VOLUME for *SET_{OPTION}_GENERAL

MIT Open Course Ware

Class Notes

2007 Japan LS-DYNA Conference Summary By Sven Holcombe

Membrane Thinning in Shell Elements

Eliminating Contact Force Interference in Spotweld Forces Using SPOTTHIN in *CONTROL_CONTACT

Contact and Global Timestep

Shell Element Stress and Strain Output to D3PLOT – A Brief Overview

Blog Statistics – Thank You!

Coverage of Japan LS-DYNA Conference – Courtesy Sven Holcombe

Makefile – Is This Just for Programmers?

Subsystem Swapping Made Easy with *SET_NODE_GENERAL, *SET_SEGMENT_GENERAL, and *INCLUDE_TRANSFORM

iPhone Support

Automatic Tiebreak – Some Quick Notes

Strains and Stress in NonLinear Finite Element Method

More on LSCASEDRIVER

Encryption Comes to LS-DYNA v971 !

Sense-Switch Controls for Interacting with Running LS-DYNA Jobs

Interactively Terminating LS-DYNA Jobs

Features Every LS-DYNA Simulation Must Have

Determining Prony Series Constants for Modeling Creep and Relaxation

Energy Output to D3PLOT Files

Accelerometer Mass

Nodal Time History in Local Coordinate System

Mesh Refinement Studies Involving Shell Elements

Consolidating Multiple Contact Definitions to a Single Contact

Principal Stress Calculator for Shell Elements in DYNAIN File

LSTC’s New and Improved Rigid Hybrid III 50th Percentile Dummy for LS-DYNA Simulations

History of LS-DYNA – By Dr. David Benson

Interface Binary Output for Single Surface Contact

True Total Strain to Effective Plastic Strain

Speeding up numerical studies using Discrete Optimization in LS-OPT

Sinusoidal Motion using *DEFINE_CURVE_FUNCTION

Time Integration, Characteristic Length, and Mass Scaling

Free LSTC USSID

Stress Relaxation in Viscoelastic Material Models

SPH Contact Definitions

Interface Component Analysis

MultiStage Dependent or Independent Simulations using *CASE

Modeling Off-Axis Dependent Yield Stress for Honeycombs using MAT_126

Choice of Rigidwall Treatment

Best Practices for Building Flexible Models with Reduced File Sizes

Transient Removal of Initial Penetrations Using DPRFAC Parameter for SOFT=2 Contacts

Load Balance Checker for MPP LS-DYNA

MPP and Deformable to Rigid Switching

Load Balance in FMVSS 207/210 Simulations for MPP

Initial Velocity in Local Coordinate System

Curve Extrapolation

Bulk Viscosity for Shells and Solids in LS-DYNA

Speeding up Simulations for Focused Studies

Prescribing Motion to a Rigidbody with Respect to a Local System

Monitoring Incremental Elapsed Time as a Function of Simulation Time

General Guidelines for Crash Analysis in LS-DYNA

A Few “Words” on Memory Settings in LS-DYNA

Best Practices for Modeling Recoverable Low Density Foams – By Example

Storing Re-Usable Models in a Central Location with *INCLUDE_PATH

Simulation Based Product Design Using LS-DYNA – Single Code & Single Model Benefits

Implicit Dynamics – Now with Birth, Death, and Burial Properties

Overview of Mass-Scaling in LS-DYNA

Identifying Problem Areas for Poorly Converging Implicit Solutions

Use of *SENSOR in LS-DYNA 971

LS-DYNA Simulation Template

Ensuring Stable, Robust, and Accurate LS-DYNA Models