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.

The invention is a modular vehicle that is intended for a variety of operations including both military and civilian operations. The vehicle addresses the issue of performing special purpose tasks that the vehicle is asked to do. Such tasks can be accomplished by configuring the vehicle as an ambulance, as a fire-fighting vehicle, as a communications van, as a command and control vehicle, etc. Thus, the vehicle is readily adapted using standardized and customized modules that are readily attached to a standardized platform that includes an appropriate interconnection means.

The invention is a modular vehicle that is intended for a variety of operations including both military and civilian operations. The vehicle addresses the issue of performing special purpose tasks that the vehicle is asked to do. Such tasks can be accomplished by configuring the vehicle as an ambulance, as a fire-fighting vehicle, as a communications van, as a command and control vehicle, etc. Thus, the vehicle is readily adapted using standardized and customized modules that are readily attached to a standardized platform that includes an appropriate interconnection means.

A multidimensional structures that is formed of thirty six interconnecting members in such a manner as to form eight (8) tetrahedrons and six (6) octahedrons thereby providing a structure that is both light weight and strong, the interconnecting members variously intersecting at a central point that may be formed of a single unified structure having fillets in the middle of the multidimensional structure and at twelve (12) external connecting points.

A multidimensional structures that is formed of thirty six interconnecting members in such a manner as to form eight (8) tetrahedrons and six (6) octahedrons thereby providing a structure that is both light weight and strong, the interconnecting members variously intersecting at a central point that may be formed of a single unified structure having fillets in the middle of the multidimensional structure and at twelve (12) external connecting points.

A structural member 10 includes a hat member 1 and a closing plate 2. The length LY of the tubular portion formed by the hat member 1 and the closing plate 2 is 6 or more times the height H of a pair of side walls 11 and 12. Each of the side walls 11 and 12 includes a high-strength portion 11A or 12A and low-strength portions 11B or 12B. The high-strength portion has a yield strength not less than 500 MPa. The low-strength portions have a yield strength of 60 to 85% of that of the high-strength portion. Each high-strength portion extends a distance not less than (⅔)H and not more than 3H as measured in the direction in which the ridges extend, and is provided such that the high-strength portions of the pair of side walls face each other. A pair of low-strength portions sandwich the associated high-strength portion.

A structural member 10 includes a hat member 1 and a closing plate 2. The length LY of the tubular portion formed by the hat member 1 and the closing plate 2 is 6 or more times the height H of a pair of side walls 11 and 12. Each of the side walls 11 and 12 includes a high-strength portion 11A or 12A and low-strength portions 11B or 12B. The high-strength portion has a yield strength not less than 500 MPa. The low-strength portions have a yield strength of 60 to 85% of that of the high-strength portion. Each high-strength portion extends a distance not less than (⅔)H and not more than 3H as measured in the direction in which the ridges extend, and is provided such that the high-strength portions of the pair of side walls face each other. A pair of low-strength portions sandwich the associated high-strength portion.

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.

Systems, apparatus and methods to implement sectional design (e.g., in quadrants) of an autonomous vehicle may include modular construction techniques to assemble an autonomous vehicle from multiple structural sections. The multiple structural sections may be configured to implement radial and bilateral symmetry. A structural section based configuration may include a power supply configuration (e.g., using rechargeable batteries) including a double-backed power supply system. The power supply system may include a kill switch disposed on a power supply (e.g., at an end of a rechargeable battery). The kill switch may be configured to disable the power supply system in the event of an emergency or after a collision, for example. The radial and bilateral symmetry may provide for bi-directional driving operations of the autonomous vehicle as the vehicle may not have a designated front end or a back end.

A utility vehicle includes a plurality of ground engaging members and a frame supported by the plurality of ground engaging members. Additionally, the utility vehicle includes an operator area having a front seating section and a rear seating section.