Explosive deformation when simulated

djtandjtan Member Posts: 17

Hallow Guys, So recently vie been doing some simulations using Explicit dynamics to simulate deformation and stress on an auxetic materials, I'm using Student version and the resulted simulation always results in some sort of explosion occurring on the auxetic structure

Impactor = Bar, 0.13kg, 50m/s Stainless Steel

Auxetic Structure = 0.23kg, Fix support at base with displacement control on both faces for planar simulation

Im also using explicit materials with principle stress failure of Al6060-T6

Is there a way to overcome this?

Best Answer

  • cxquancxquan Berkeley, CAForum Coordinator Posts: 79
    Accepted Answer

    Check Energy Summary under Solution Information in Explicit Dynamics System to make sure hourglass energy is small, comparing with internal energy.

    If the auxetic structure contains thin-walled parts, consider using shell elements and beam elements to account for bending deformation properly.

Answers

  • cxquancxquan Berkeley, CAForum Coordinator Posts: 79
    Accepted Answer

    Check Energy Summary under Solution Information in Explicit Dynamics System to make sure hourglass energy is small, comparing with internal energy.

    If the auxetic structure contains thin-walled parts, consider using shell elements and beam elements to account for bending deformation properly.

Sign In or Register to comment.