AUTOMOBILE BODY STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide an automobile body structure capable of realizing a deformation mode compatible of compacting the body dimensions and reducing crew deceleration to a still higher level. SOLUTION: A reaction producing member 1 receiving compression load parallel with the deceleration actuating direction at the time of collision has at least two parts commonly absorbing a stroke by compression deformation arranged in series and the value of the plastic deformation stress of one of the parts 1f of the two parts is set lower than that of the yield point stress of the other part 1r but higher than the plastic deformation stress of the other part 1r, while a stress concentration part 4 for starting plastic deformation with a lower value than the yield point stress value of the other part 1r is provided on one of the part 1f. Thus body deceleration high in the initial stage of collision and becoming low after the middle stage of the collision can be realized.