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Backbone tube chassis is a type of automobile construction chassis that is similar to the body-on-frame design. Instead of a two-dimensional ladder-type structure , it consists of a strong tubular backbone (usually rectangular in cross section ) that connects the front and rear suspension attachment areas.
By 1963, a new structural system of framed tubes had appeared in skyscraper design and construction. Fazlur Rahman Khan, a structural engineer from Bangladesh (then called East Pakistan) who worked at Skidmore, Owings & Merrill, defined the framed tube structure as "a three dimensional space structure composed of three, four, or possibly more frames, braced frames, or shear walls, joined at or ...
Some tube chassis were little more than a ladder chassis made with two large diameter tubes, or even a single tube as a backbone chassis. Although many tubular chassis developed additional tubes and were even described as "space frames", their design was rarely correctly stressed as a space frame and they behaved mechanically as a tube ladder ...
In tube hydroforming pressure is applied to the inside of a tube that is held by dies with the desired cross sections and forms. When the dies are closed, the tube ends are sealed by axial punches and the tube is filled with hydraulic fluid. The internal pressure can go up to a few thousand bars and it causes the tube to calibrate against the dies.
These modifications also increase the stiffness and torsional rigidity of the chassis and have been adopted in Locosts in other countries. Various projects have analyzed the strength of the Locost Chassis under finite element analysis for interest's sake. The FEA is known to show the original Locost's design to be slightly under engineered.
A Tesla platform chassis, used for both the Model S and the Model X VW Beetle chassis, from the rear. A platform chassis is a form of vehicle frame / automobile chassis, constructed as a flat plate or platform, sometimes integrating a backbone or frame-structure with a vehicle's floor-pan.
Haruhiko Tanahashi (棚橋晴彦, Haruhiko Tanahashi) is a Japanese automotive engineer who is responsible for the design and construction of the Lexus LFA supercar. Tanahashi joined Toyota Motor Corporation in 1978 as a chassis engineer, and has since worked in new vehicle design for over 30 years. [1]
On the design team were Cunningham, Walters, G. Briggs Weaver and Blake. [12] Only one C-1 was built, with serial number 5101. [8] The car was completed in late 1950, and is generally listed as from the 1951 model year. [13] The chassis was made of 3 in (76 mm) steel tubing with a central X-brace. [9] The rear suspension was a custom-made De ...