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    FHWA/NHTSA National Crash Analysis CenterFHWA/NHTSA National Crash Analysis Center

    Chevy Silverado

    Model Year 2007

    Version 2

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    Models ReleasedModels Released

    Silverado.2.2617kg.k

    Standard frontal NCAP validated model

    Model massed to reflect NCAP test mass (includes dummy mass

    and instrumentation mass)

    Silverado.2.2270kg.k

    Model massed to proposed MASH-08 test level 3-11 vehicle

    InertiaComparison PhysicalVehicle FEModel %differenceWeight,kg 2337 2270 2.86

    Pitchinertia,

    kgm^26155 6028 2.06

    Yawinertia,6453 6490 0.57

    Rollinertia,

    kgm^21051 1050 0.09

    VehicleCGheight,

    2/26/2009

    in

    . . .

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    FE Model of Chevy SilveradoFE Model of Chevy Silverado

    VIN 2GCEC13C771511793, 2007 Chevy Silverado 1500 2WD Crew Cab Short Box

    Detailed model, can be used for most

    im act scenarios -

    Interiors will be added in the next

    release

    Number of Nodes - 942677

    Number of Shells - 873144-a er a a a er ve rom coupon

    testing

    Frontal impact validation into a rigid

    Number of Solids - 53293

    Number of Elements - 929131

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    oa ce wa comp e e

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    Accelerometer LocationsAccelerometer Locations

    ocation - o e

    Right seat - 2739121Left seat - 2739129Engine bottom - 2939137Vehicle CG - 2942560

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    Vehicle ComparisonVehicle Comparison

    FE ModelNCAP Test

    5877

    Weight (Kgs) 2617 2622

    Engine Type 4.8 L V8 4.8 L V8

    eftSideView

    Tire size P245/70R17 P245/70R17

    Attitude (mm) F 1016 F 929

    L

    Wheelbase

    (mm)3660 3664

    mm

    Rearward of

    front wheelC/L

    1664 1664

    tSideView

    Body Style4-door

    crew cab

    4-door

    crew cab

    Rig

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    NCAP Test SummaryNCAP Test Summary

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    NCAP Test Vehicle DataNCAP Test Vehicle Data

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    NCAP load cell wallNCAP load cell wall

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    Crush ModesCrush Modes

    Pre-Test

    Post-

    Test

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    NHTSA TestNHTSA Test

    NHTSA Test 5877, frontalNCAP

    evy vera otest

    45 load cell wall

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    Accelerometer DataAccelerometer Data

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    ForceForce--displacementdisplacement

    Note: Missin data rom Load Cell C3 in Test 5877

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    One or more load cells saturated (force does not reach zero at the end)

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    Energy BalanceEnergy Balance

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    SummarySummary

    Model verified against frontal NCAP test (NHTSA Test No. 5877).

    e crus mo e o e ra s an e s ruc ura mem ers s ows goo

    correlation between test and simulation.

    .

    Current model does not include failure of these components to ensure

    robustness.

    Suspension system is modeled in greater detail.

    Vehicle is set to equilibrium position under gravity loading.

    Future updates will include verification against low speed bump and

    terrain tests conducted at FOIL.

    has been run at 25, 30 and 35 mph to ensure stability).

    2/26/2009