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.

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}$

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}$

Methods, apparatus, systems and articles of manufacture are disclosed for electric motorized wheel assemblies. An example wheel assembly for use with an electric vehicle disclosed herein includes an electric motor, a suspension assembly, and a frame mounting interface to attach the wheel assembly to a frame of the electric vehicle.

A vehicle chassis platform including: a frame having a front frame end, a rear frame end, a longitudinal frame axis, an upper frame surface, a bottom frame surface, a first longitudinal lateral frame surface and a second longitudinal lateral frame surface, wherein the upper frame surface is substantially flat; and two or more mechanical connection assemblies each coupled to one of the first and second longitudinal lateral surfaces, each of mechanical connection assemblies to couple a vehicle corner module (VCM) to the frame and to transfer mechanical loads between the frame and the VCM when the VCM is coupled to the frame.

A chassis assembly having mixed material for reduced mass is provided. The assembly comprises an upper structure comprised of metal. The upper structure has a plurality of first bond surfaces, each of which is parallel with each other at varying elevations relative to a z-axis of a 3-dimensional coordinate thereof. The assembly further comprises a lower structure made of a polymer composite. The lower structure has a plurality of second bond surfaces, each of which is parallel with each other at varying elevations relative to the z-axis thereof. The second bond surfaces are arranged to align with the first bond surfaces in complementing relation such that the lower structure is joined with the upper structure at the first and second bond surfaces. The assembly further comprises an adhesive disposed between the first and second bond surfaces to join the lower and upper structures at the first and second bond surfaces, defining a bond gap between the first and second bond surfaces.

A chassis assembly having mixed material for reduced mass is provided. The assembly comprises an upper structure comprised of metal. The upper structure has a plurality of first bond surfaces, each of which is parallel with each other at varying elevations relative to a z-axis of a 3-dimensional coordinate thereof. The assembly further comprises a lower structure made of a polymer composite. The lower structure has a plurality of second bond surfaces, each of which is parallel with each other at varying elevations relative to the z-axis thereof. The second bond surfaces are arranged to align with the first bond surfaces in complementing relation such that the lower structure is joined with the upper structure at the first and second bond surfaces. The assembly further comprises an adhesive disposed between the first and second bond surfaces to join the lower and upper structures at the first and second bond surfaces, defining a bond gap between the first and second bond surfaces.

According to some embodiments, a railcar comprises a first well component supported by a first railcar truck and a second railcar truck. The first well component is disposed between the first railcar truck and the second railcar truck. The length of the first well component is restricted to transport an intermodal shipping container no longer than twenty feet in length. In particular embodiments, the first well component is configured to transport a double stack of twenty-foot intermodal shipping containers. Each twenty-foot shipping container of the double stack may be loaded to maximum weight of 67,000 pounds. Particular embodiments include an articulated railcar with two or more twenty-foot well components.

According to some embodiments, a railcar comprises a first well component supported by a first railcar truck and a second railcar truck. The first well component is disposed between the first railcar truck and the second railcar truck. The length of the first well component is restricted to transport an intermodal shipping container no longer than twenty feet in length. In particular embodiments, the first well component is configured to transport a double stack of twenty-foot intermodal shipping containers. Each twenty-foot shipping container of the double stack may be loaded to maximum weight of 67,000 pounds. Particular embodiments include an articulated railcar with two or more twenty-foot well components.

In one exemplary embodiment, a method of repairing a chassis rail for a vehicle includes that a marking is identified on the chassis rail. The marking indicating where to cut the chassis rail. The method also includes that the chassis rail is cut proximate the marking to form a cut chassis rail portion. The method further includes a replacement rail assembly is slid onto the cut chassis rail portion. The replacement rail assembly including a replacement rail, an inner brace portion secured within the replacement rail, and a bracket wrapped at least partially around the replacement rail and secured to the replacement rail. The bracket including one or more fastener through-passages. The method further includes the replacement rail assembly is secured to the cut chassis rail portion.