PAM-CRASH 2000 and PAM-SAFE 2000Paris 24 August 2000 ESI Group announced new versions of its flagship products PAM-CRASH and PAM-SAFE. The PAM-CRASH crash simulation software predicts how a vehicle will respond to crash tests, while PAM-SAFE enables the simulation of the effects of restraint systems such as airbags and seatbelts, on occupants represented either as dummies or biomechanical models of the human body.
ESI Group innovates with the first coupling between the simulation of the stamping process required to build the parts - using PAM-STAMP software - and the simulation of the crash performance of the vehicle.
Cars are mainly made of stamped sheets of metal, including crash critical parts such as main frames, pillars, etc... But the mechanical properties of stamped parts differ from those of the original metal, for example, local thinning weakens and strain hardening strengthens the final assembled part. Physical prototypes are not only expensive and time consuming but also lead sometimes to false prediction of crashworthiness. Moreover, mechanical properties collected on a prototype from selected measurements are incomplete. Stamping simulation helps predicting the residual state of the prototype. Linking Virtual Manufacturing and Virtual Prototyping eliminates the need for physical characterisation and brings a comprehensive information about the mechanical properties of the prototype. PAM-CRASH 2000 makes it easier to assemble components meshes and drastically reduces model preparation time. With this new version, two or more parts with non-coincident meshes can be automatically assembled. Connections include spot-welds, continuous weld lines, adhesive bonding, etc. This significantly reduces time-consuming manual meshing operations as meshes can be produced independently without worrying about connectivity. PAM-SAFE 2000 introduces a new simplified methodology based on a multi-body solver to offer a comprehensive and integrated solution for occupant safety simulation. The multi-body solver provides rapid evaluation at the concept stage in addition to the FEA (Finite Element Analysis) method, which is used for final stage design validation. This approach delivers a solution five times faster than before.
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