Blocked Force Determination on Thin Plate Structures Including Applications

Keyu Chen, David Herrin

Research output: Contribution to journalConference articlepeer-review


Transfer path analysis is commonly used to determine input forces indirectly utilizing measured responses and transfer functions. Though it is recommended that the source should be detached from the vibrating structure when measuring transfer functions, engineers and technicians frequently have a difficult time in doing so in practice. Recently, a substitute for inverse force determination via transfer path analysis has been suggested. The indirectly determined forces are termed blocked forces and are usable so long as the source and machine are not detached from one another. Blocked forces have the added advantage of being valid even if the machine structure is modified. In this research, a typical automotive engine cover is considered as a receiver structure and is bolted to a plastic source plate excited by an electromagnetic shaker. Blocked forces are determined at different locations, and the correctness of the calculated blocked forces is assessed by comparing the predicted and simulated responses at selected receiver points which were not used for determining the blocked forces.

Original languageEnglish
JournalSAE Technical Papers
Issue numberJune
StatePublished - Jun 5 2019
Event2019 SAE Noise and Vibration Conference and Exhibition, NVC 2019 - Grand Rapids, United States
Duration: Jun 10 2019Jun 13 2019

Bibliographical note

Publisher Copyright:
© 2019 SAE International. All Rights Reserved.

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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