Pcb design reliability simulation method and system

G - Physics – 06 – F

Patent

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G06F 7/50 (2006.01) G01R 31/28 (2006.01)

Patent

CA 2644975

The present invention relates to a method for finding design weakness and potential field failure of a PCB assembly which includes components, comprising the steps of: (a) creating a model of the PCB assembly by which natural frequencies and mode shapes of the PCB assembly can be determined; (b) performing a natural frequencies simulation for determining natural frequencies and mode shapes of the PCB assembly; and (c) analyzing said determined natural frequencies and mode shapes and identifying local dominant oscillations of components, components identified as having a local dominant oscillation in at least one of said determined mode shapes are identified as components having a relatively high potential of field failure.

La présente invention se rapporte à un procédé permettant de trouver des faiblesses de conception et des défaillances potentielles de champ d'un ensemble carte à circuit imprimé équipé de composants. Ce procédé comprend les étapes consistant à: (a) créer un modèle de l'ensemble carte à circuit imprimé permettant de déterminer des fréquences propres et des modes de forme de l'ensemble carte à circuit imprimé, (b) effectuer une simulation aux fréquences propres afin de déterminer les fréquences propres et les modes de forme de l'ensemble carte à circuit imprimé et, (c) analyser lesdites fréquences propres et formes de mode, puis identifier des oscillations dominantes locales de composants. Les composants identifiés comme présentant une oscillation dominante locale dans au moins l'une desdites formes de mode déterminées sont identifiés comme des composants présentant un potentiel relativement élevé de défaillance sur le terrain.

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