In recent years, Peter Avitabile has been actively involved in many different types of research activities in the MACL mainly in the areas of: 

·        Continued Research in Model Reduction and Model Expansion Techniques

·        Implementation of Modal Model Correlation Techniques

·        Development of Dynamic Models from Operating Data

·        System Model Development using Modal Models and Impedance Approaches

·        Estimation of Rotational DOF for Impedance Modeling Applications

·        Model Updating with Special Considerations for Adjustments Outside the Skyline Constraints of the Mass and Stiffness Matrices

·        Disassembly of System Models for the Identification of Component Dynamic Characteristics Adjustment and Improvement
 

Earlier research areas include: 

• Development of Pre-Test Techniques for Correlation with Analytical Models
  ·        Mode Shape Summation Plot (MSSP)
  ·        Mode Power Plot (MPP)
  ·        CORTHOG Pre-Test Plot
  
• Implementation of Model Reduction Schemes
  ·        Guyan/Irons Reduction
  ·        Improved Reduction System (IRS)
  ·        Dynamic Condensation
  ·        System Equivalent Reduction Expansion (SEREP)
  
• Development of correlation tools for analytical and experimental modal models such as:
  ·        Pseudo Orthogonality Check (POC)
  ·        Coordinate Orthogonality Check (CORTHOG)
  
• Understanding the use of tools for correlation of analytical and experimental modal data bases such as:
  ·        Modal Assurance Criteria (MAC)
  ·        Coordinate Modal Assurance Criteria (CoMAC)
  ·        Enhanced Coordinate Modal Assurance Criteria (ECoMAC)
  ·        Modulus Difference
  ·        Pseudo Orthogonality Check (POC)
  ·        Coordinate Orthogonality Check (CORTHOG)
  
• Development of non-linear response models for linear modal components connected with non-linear elements using some newer techniques such as:
  ·        Equivalent Reduced Model Technique (ERMT)
  ·        Modal Modification Modification Technique (MMRT)
  ·        Complex Modal Modification Modification Technique (CMMRT)
  ·        Component Element Method (CEM)
  

In addition to general research, recent work has centered around improving the undergraduate education process through integration of critical STEM material throughout the entire education process.  This project entitled “Multi-Semester Interwoven Project for Teaching Basic Core STEM Material Critical to Solving Dynamic Systems Problems” is funded by the NSF Engineering Education Division.

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