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Fundamentals of Unibody Construction - Impact Absorption Structure
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Impact Absorption Structure |
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The unibody has a crushable structure to absorb collision impact energy through deformation of its body structure. The front and rear compartments are constructed as impact absorbing structures. The center body (passenger compartment) has a rigid structure to disperse collision energy.
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During impact, stress is concentrated where the part shape and surface has been altered. For example, to bend a metal plate, first open a hole at the bending position. When the plate is bent, the stress is concentrated around the hole, and the plate is easily bent there. | |
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Unibodies have different size side frame sections, plus stamped channels and holes applied to front wheelhouse upper members. These help absorb impact energy by concentrating stress at those locations. | | | | 
