Abstract.The purpose of this project is to study the properties and characteristics of damage of structures under impact Double Hat a bending. Using steel in forming workpiece a cap off. The folded up style hats off, then brought together by welding with arc bonding specimens, will have different sizes, thickness 3 value. The 1mm, 2mm. And 2.5mm. The test is a test under the impact and bending. Test impact test machine by using Impact Testing Machine by height testing is 2.14 m. น้ำหนักของ mass. Into the hammer is 54 kg. Let my head so affected workpiece, which has support for both the both ends. The results showed that the piece size thickness 2.5 mm.? The ability to support maximum. In the modeling, analysis Finite Element Analysis using Abaqus which simulate conditions showed that the target and the target with the size thickness 2.5 mm.? The ability to support the highest compare the results between experiments with Finite Element Analysis showed different about 1% and analyze the energy absorption structure found that with the thickness of 1 mm.? Have the ability to absorb the maximum power even though the value of the burden would be lower than the target, 2.5 mm. However the damage of the target model of distance, so make the most of energy absorbing that has value most. Characteristics and damages of the work piece record with a high speed camera and display in the report.
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