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Ballistic impact simulation of composite targets in AUTODYN?

In general we use Johnson-Cook model for bullet, which accounts for strain-rate effects, while for the target (Composites), the we use orthotropic constitutive model. Does it mean that strain-rate effects are not important for composites? The Johnson-Cook model cannot be readily used for composites. How does the AUTODYN considers strain rate effects for composites in ballistic impact simulations? 

Manufacturing challenges associated with variable stiffness composites

Can  any one tell me what are the variable stiffness composites and what are the manufacturing challeneges involved.

How to perform Hypervelocity Impact of Composite in AUTO-DYN

Please anyone give procedure hoe to do Hypervelocity Impact of Composite using AUTODYN.

 

If possible provide any tutorials related to the above analysis 

MODELING OF COMPOSITE PLATE

HI

 

CAN ANY ONE HELP ME HOW TO MODEL A SIMPLE COMPOSITE PLATE (5 LAYERS) IN ABAQUS.

 

HOW TO DEFINE THE CONTACT BETWEEN EACH PLY?

 

HOW TO DEFINE FIBER DIRECTION? 

mesh-free method for elasto-plastic analysis

hi

is there any algorithm other than incremental equations to get the elasto-plastic constitutive relation

if it is there please suggest me so that i can go on step forward in my project

 

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