🎉Community Raffle - Win $25

An exclusive raffle opportunity for active members like you! Complete your profile, answer questions and get your first accepted badge to enter the raffle.
Join and Win

Error #144

User: "Dani_20"
Dani_20
Altair Community Member
Updated by Dani_20

Hello,

 

I have been trying to simulate a sandwich panel with aluminium core, insert and carbon fiber laminate. I have introduced the following values for carbon fiber and core:

 

   image.png.4614a0f5d7fed558fa22ff798d2944a8.png    image.png.23ce0a6ad2a9dc125099d251cdeea5a9.png

 

I have also defined the failure criteria in properties as TSAI. I believe everything is correctly defined, however when I run the simulation the following error appears:

 

 *** ERROR # 144 ***
 CPYRA element 155981 has singular strain functions.
 Please check material data.
 

Anybody could help me please?

 

Find more posts tagged with

English
OptiStruct
Sort by:
1 - 2 of 21
    User: "Robert Lawson"
    Robert Lawson
    Altair Community Member
    Updated by Robert Lawson

    Looks like you need to define the G's in your materials which are currently blank. 

     

    In the case of the core, G23 and G31 are the key stiffness values relevant for honeycomb core.  Typically, these would be grabbed from a Hexcel datasheet.

     

    For the carbon fiber material, you can estimate G1Z and G2Z to be the same as G12.

     

    - Robert

    User: "Dani_20"
    Dani_20
    Altair Community Member
    OP
    Updated by Dani_20

    Thank you for the information

     

    I have introduced the values and the simulation runs correctly

Quick Links