A Virtual Multibody and Finite Element Analysis Environment in the Field of Aerospace Crashworthiness

摘要: One important concept in crashworthiness analysis is how the contact/impact treated or modeled. method for predicting impact response of multibody mechanical systems to treat local deformations as well contact forces continuous. The application this requires knowledge variation and frictional forces. Contact force models, including nonlinear visco-elastic, Hertzian-based, visco-plastic models are presented. Computer-aided tools typically used studies aircraft then described. A methodology presented entire design cycle from airframe cabin, seat, restraint egress system. incorporates a combination modeling non-linear finite element airframe, seat occupant component testing early stages, sled and/or full-scale later stages evaluations. Virtual Reality (VR) system utilized effective visualization better understand interaction between various subsystems. Examples use some current crash safety issues