FIELD: machine building.
SUBSTANCE: group of inventions relates to the impact-resistant structural element embodiments and to the vehicle variants. Impact-resistant structural element 10 includes the trough-shaped element 1 and the closing plate 2. Trough-shaped element 1 includes the upper surface section 1a, extending from the upper surface section 1a both edges two side walls 1b, and flanges 1c. Closing plate 2 is in contact with the flanges 1c. Each of the side walls 1b includes a low-strength section 1s extending from the side wall 1b first edge to the position at a distance of Sh. Distance Sh makes from 20 to 40 % of the side wall 1b height H. Low-strength section 1s yield strength makes from 60 to 85 % of the side wall 1b yield strength, measured in the side wall 1b half of the height 1mid position.
EFFECT: enabling increase in the strength.
11 cl, 1 tbl, 25 dwg
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