STRUCTURAL DESIGN SUPPORT SYSTEM AND STRUCTURAL DESIGN SUPPORT PROGRAM OF VEHICLE BODY

摘要

PPROBLEM TO BE SOLVED: To improve efficiency in developing a vehicle, by enhancing efficiency in a structure and sound analysis using a model, by determining an optimal structure capable of reducing noise by optimization of an index of evaluating a structure-sound coupling characteristic, without solving a structure-sound coupling equation. PSOLUTION: A calculation model of a structure of a vehicle body being a design object is generated by a calculation model generation means 2, and a proper value analysis of a structural system and a proper value analysis of a sound system are respectively performed to this calculation model by a structure system analyzing means 3 and a sound system analyzing means 4. A sound level at an evaluation point in the calculation model is calculated by a sound evaluating means 5, and when this sound level is a desired value or more, a structure-sound coupling characteristic evaluating index calculating means 7 calculates the index of evaluating the structure-sound coupling characteristic. Sensitivity to the index of evaluating this structure-sound coupling characteristic is calculated by a sensitivity calculation means 7, and a structure optimizing means 8 changes the structure of the vehicle body being the design object based on its sensitivity. PCOPYRIGHT: (C)2009,JPO&INPIT