The surrogate system hypothesis for joint mechanics

作者: Nidish Narayanaa Balaji , Matthew R.W. Brake

DOI: 10.1016/J.YMSSP.2019.02.013

关键词:

摘要: Abstract The main challenges in the design and analysis of jointed structures deal with prediction dissipation across bolted interfaces. Since friction is thought to be one mechanisms for this, current study investigates utility frictional parameter identification applied different structures. Based on recent discoveries, a Surrogate System Hypothesis has been formulated systematize this: hypothesis states brief, that physical properties joint are independent its structural context. work seeks obtain better understanding underlying systems by evaluating confidence metric relatively simple set systems—physically perturbed configurations Brake-Reus Beam. Interfacial modeled using whole patches distributed hysteretic (Iwan) elements simulations conducted Quasi-Static Modal Analysis (QSMA) approach estimate modal characteristics system response (amplitude dependence natural frequency dissipation). Posing estimation as Multi-Objective Optimization Problem (MOOP) shown reveal important features both employed constitutive model well structure modeled. Consequently, used evaluate epistemic uncertainty inherent three models. studies can such way it nearly employed.

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