Motor Vehicle Body with a Deformation Element and a Side Member

摘要

A body for a motor vehicle includes a side member, which is made from a fiber-reinforced plastic composite, and a deformation element. The deformation element is designed such that it can absorb collision energy in a low relative speed range of the motor vehicle through fracture. The side member is designed such that it can absorb collision energy in a high relative speed range of the motor vehicle through brittle fracture. A side member start-of-fracture force level, at which the side member first starts to fracture, is greater than a side member mean fracture force level, at which the side member goes on to fracture. A deformation element start-of-fracture force level, at which the deformation element first starts to fracture, and a deformation element mean fracture force level, at which the deformation element goes on to fracture, are lower than the side member start-of-fracture force level. The deformation element mean fracture force level is lower than the side member start-of-fracture force level and greater than a force level corresponding to a side member mean fracture force level reduced by 10%, preferably 5%.

主权项

1. A body for a motor vehicle, comprising:
a side member configured from a fiber reinforced plastic composite material; a deformation element configured to absorb collision energy in a low relative speed range of the motor vehicle by way of failure, wherein the side member is configured to absorb collision energy in a high relative speed range of the motor vehicle by way of brittle failure, a side member initial failure force level, at which the side member first begins to fail, is greater than a side member mean failure force level, at which the side member fails in a further process, and a deformation element initial failure force level, at which the deformation element first begins to fail, and a deformation element mean failure force level, at which the deformation element fails in a further process, are lower than the side member initial failure force level, and the deformation element mean failure force level is lower than the side member initial failure force level and greater than a force level corresponding to the side member mean failure force level reduced by approximately 10%.