Electromechanical Impedance Method for Applications in Boundary Condition Replication
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One of the most challenging parts of modeling structural dynamics is realistically replicating boundary conditions from either a theoretical or experimental perspective. In a finite element model, the mechanical impedance of bolted joints in an assembly can be modeled, as a first step, as an equivalent spring-damper connection. For relatively simple systems, the parameters of such an approximation are updated such that the dynamic characteristics of the model match with the jointed structure. When the assembled structure is in an operational environment, joints are one of the first components of the assembly to change their dynamic characteristics. As a result, identifying a change in their dynamics and further keeping track of the changes is burdensome. Additionally, if a change is detected, it is equally difficult to modify the structure to its previous state without exhaustive testing.
Sensors and Instrumentation, Aircraft/Aerospace, Energy Harvesting & Dynamic Environments Testing, Volume 7
author list (cited authors)
Devine, T. A., Malladi, V., & Tarazaga, P. A.
complete list of authors
Devine, TA||Malladi, VVNS||Tarazaga, PA
editor list (cited editors)
Walber, C., Walter, P., & Seidlitz, S.