A long formed article made of one steel sheet includes a top sheet portion extending in a longitudinal direction, a standing wall portion extending downward from each of both edges of the top sheet portion in a width direction, and a protrusion portion formed in a portion of the top sheet portion in the longitudinal direction by overlapping a portion extending toward an outside from each of both ends of the top sheet portion in the width direction and a portion extending toward the outside from an upper end of the standing wall portion, in a non-protrusion region, a recessed part extending in the longitudinal direction is formed in the top sheet portion, and a total value α of inner surface peripheral lengths of the top sheet portion and the standing wall portion in a cross section of the formed article perpendicular to the longitudinal direction in a protrusion region and a total value β of inner surface peripheral lengths of the top sheet portion, the standing wall portion, and the recessed part in the cross section of the formed article perpendicular to the longitudinal direction in the non-protrusion region satisfy 1.01≤β/α≤1.50.

Rocker structure (R1-R3) for a vehicle comprising a first steel profile (1) and a second steel profile (2) having the longitudinal direction (L) of the vehicle so that a channel (CH) is defined therebetween, the first and second profiles(1, 2) comprising a vertical central section (13), the rocker structure (R1-R3) comprising a first impact absorption element (3) arranged in the channel (CH), wherein the first impact absorption element (3) is a closed steel profile wherein an upper lobe (31) and a lower lobe (32) joined by a central joining section (33) are defined, the upper lobe (31) being located closer to the upper joining flanges (11, 21), the lower lobe (32) closer to the lower joining flanges (21, 22). The invention also relates to a method for obtaining the rocker structure and to vehicles provided with the inventive rocker structure.

A stiffened panel structure includes a panel-shaped component and a wire. The panel-shaped component has a panel body that curves in such a manner as to be convex outward. The wire has a first end portion and a second end portion. The first end portion is bonded to a first point on the inner surface of the panel body. The second end portion is bonded to a second point on the inner surface of the panel body. The wire is strained between the first point and the second point.

A shock absorbing member which can increase impact absorption energy and also enables thinning of a steel sheet that is a starting material, a method for producing the shock absorbing member, and a method for producing a steel sheet for cold plastic working are provided. The shock absorbing member includes a ridge portion formed in a curved shape as viewed from a longitudinal direction, and a wall portion extending from the ridge portion. In the wall portion, a ratio σ.sub.5/τ.sub.5 between a tensile stress σ.sub.5 when an elongation in a tensile test is 5% and a shear stress τ.sub.5 when a shear strain in a shear test is 5√3% is 1.70 or less, or a ratio σ.sub.10/τ.sub.10 between a tensile stress σ.sub.10 when an elongation in a tensile test is 10% and a shear stress τ.sub.10 when a shear strain in a shear test is 10√3% is 1.70 or less.

A transporter includes a frame supported on wheels, a cab mounted on a front portion of the frame, and a bed mounted on the rear portion of the frame. The bed includes deck plates and supports mounting the deck plates on the frame. At least a rear end portion of the bed is raiseable and lowerable relative to the frame. The bed is sufficiently lightweight that the transporter has a hauling capacity of at least 10,000 lbs. and a fully loaded gross vehicle weight of no more than 26,000 lbs. At least portions of the bed may be made from high strength steel (HSS) such as ASTM A1011/1011M steel having a grade of 80 or higher. A ramp, which may also be made of HSS, may be attachable to the rear of the bed and may have longitudinally extending supports and slats that may be arranged in a herringbone pattern.

This vehicle body structural member is a vehicle body structural member (1) extending in a longitudinal direction, wherein, in at least a portion thereof in the longitudinal direction, a cross-section perpendicular to the longitudinal direction satisfies the Expressions (1) to (3).

[00001]$\begin{array}{cc}{\sigma }_{\mathrm{cr}}>{\sigma }_y& \mathrm{Expression}\left(1\right)\end{array}$$\begin{array}{cc}{\sigma }_{\mathrm{cr}}=\frac{k{\pi }^2{\mathrm{Et}}^2}{12\left(1-v^2\right)b_f^2}& \mathrm{Expression}\left(2\right)\end{array}$$\begin{array}{cc}k=4.\exp \left(-28\frac{R1t}{b_{f}b}\right)& \mathrm{Expression}\left(3\right)\end{array}$

Rear structure for an electric vehicle having a rear rail which includes a rear portion, a front portion and a transition zone, such that in the event of a rear crash the rear portion and the transition zone are both able to deform to maximize the amount of energy absorption.

The present invention provides a hot-stamping formed article made of steel, in which the hot-stamping formed article has at least one of a tensile strength of 1200 MPa or more and a martensitic steel structure and includes a first portion, a corner portion, and a second portion, which are sequentially continuous from one end portion to the other end portion in a longitudinal direction, each of the first portion, the corner portion, and the second portion includes a top sheet and two vertical walls connected to the top sheet when viewed in a cross section perpendicular to the longitudinal direction, the second portion includes a first outwardly-extending flange adjacent to the vertical wall, and the corner portion includes a vertical flange extending from the vertical wall of the first portion, a second outwardly-extending flange adjacent to the vertical wall located on an outer peripheral side of the corner portion out of the two vertical walls, and a transition portion in which the vertical flange and the second outwardly-extending flange are continuous.

A structural assembly for a vehicle includes a battery structure having a battery frame. The structural assembly includes a vehicle frame and a vehicle body. The vehicle frame has opposed longitudinal rails. The vehicle body is separate from and mounted on the vehicle frame. The vehicle body includes opposed rockers extending in a longitudinal direction of the vehicle. Each opposed longitudinal rail is located between a respective rocker and the battery frame of the battery structure.

A formed body 1 includes a first flange 3, a body portion 100 (a first vertical wall portion 4, a top plate portion 5, a second vertical wall portion 6), and a second flange 7, and the formed body 1 is made of steel having tensile strength of 440 MPa or more. The first flange 3 extends toward the second flange 7 from an edge portion of the first vertical wall portion 4. The first flange 3 and the body portion 100 curve so as to conform to each other as viewed from the direction orthogonal to the top plate portion 5.