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Example 1: Bullet impact

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Ex. 1: Bullet impactNew model

Ident BulletSymmetry 3D, Z

Load Materials – CART BRASS, FLOATGLASB, LEAD (Shock, Steinberg Guinan)Add erosion to all materials (geometric strain = 1.0)

Import parts from dyna: BulletInner.K and BulletOuter.K

Delete componentsCreate new component containing both partsTransform component

Rotate 180 degrees about Y-axisRotate 150 degrees about Z-axisTranslate –0.36mm in X direction

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Ex. 1: Bullet impactDefine Initial Conditions

Name: InnerMaterial: LeadVelocity: X=519.6m/s, Y=-300m/sName: OuterMaterial: CART BRASSVelocity: X=519.6m/s, Y=-300m/s

Define Boundary ConditionsName: FixedType: General 3D VelocitySet all parameters to 0.0

Fill parts with initial conditionsFill Core with InnerFill Casing with Outer

Delete unused materials

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Ex. 1: Bullet impactCreate Part

Name: TargetSolver: LagrangeSelect: Parts WizardPredef: BoxOrigin: (0.0,-50.0,0.0)Size: 2.5x100.0x50.0Numerical size: 5x50x25Grade Zoning

In J direction, 0.5mm,20 cells, centredIn K direction, 0.5mm,10 cells, lower K

Fill with FLOATGLASB

Convert part to IJK (from import pull down menu)

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Ex. 1: Bullet impactDefine Group

Name: FixType: Nodes

Add nodes to groupUse Alt+left mouse button to draw polygon as shownUse Control+left mouse button to close polygon

Apply boundary condition “Fixed” to group

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Ex. 1: Bullet impactJoin two parts of bullet together.

Define InteractionsCalculate gap size and check.

Define Wrap-up Criteria

Define Save times

Save and execute