Abstract.Design, development, structure and parts within the structure efficiency and high security. To reduce the risk of accidents caused by the insertion or collision. This would lead to injury and loss of life of the user vehicle. Therefore, the experiment of parts with the ability to reduce the damage from the insert or winning of structures called "absorbed" used in the structure to absorb the energy to help absorb the energy of the collision or an insert and reduce the damage of the main structure to reduce the crow. To lose the life and property of the accidents caused by collisions or the insert. The factors that affect the ability to absorb the energy of the energy absorption, including shape, material, thickness, size and behavior of damage. And so on.In this golden test objectives were to determine the ability to absorb the energy of the thin wall pipe which is aluminum tube fill poly urethane foam under torque (Torsion) using the simulation program and experimental pieces abacus actually work to compare. The cross-sectional shapes of the pipe used to experiment, including shape face Tat square cross-sectional shapes hexagon shape face Tat octagon, and cross-sectional shapes circle. The density of the foam was used for the experiment is 50kg / m, ¬ 3 75kg / m3 100kg / m3,, Analysis showed that under torque The pipe cross-sectional shapes circle energy absorption highest, followed by pipe shape face Tat eight square shape, hexagonal cross-section Pipe shape and face Tat square absorption energy minimum. From the analysis of the density foam used to fill in the pipe. 50kg /, /, M-3 75kg m3 100kg / m3. The density of the foam making aluminum tube absorption energy is the most high 100kg / m3 and found ว่าความหนาแน่น foam will make the higher adsorption energy increases.
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