Reactant-product decoupling method for state-to-state reactive scattering: A case study for 3D H+H2 exchange reaction (J=0)

1997 ◽  
Vol 106 (5) ◽  
pp. 1742-1748 ◽  
Author(s):  
Wei Zhu ◽  
Tong Peng ◽  
John Z. H. Zhang
Keyword(s):  
Exchange Reaction ◽  
Reactive Scattering ◽  
Decoupling Method

Optically assisted H + H2 exchange reaction and reactive scattering resonances

1990 ◽  
Vol 173 (2-3) ◽  
pp. 169-174 ◽  
Author(s):  
Tamar Seideman ◽  
Jeffrey L. Krause ◽  
Moshe Shapiro
Keyword(s):  
Exchange Reaction ◽  
Reactive Scattering ◽  
Scattering Resonances

Li + HF:  A Case Study to Develop Novel Computational Technologies for Reactive Scattering†

2001 ◽  
Vol 105 (11) ◽  
pp. 2361-2368 ◽  
Author(s):  
Antonio Laganà ◽  
Stefano Crocchianti
Keyword(s):  
Reactive Scattering

Nonstatistical Behavior of Reactive Scattering in the18O+32O2Isotope Exchange Reaction

2007 ◽  
Vol 129 (10) ◽  
pp. 2866-2870 ◽  
Author(s):  
Annalise L. Van Wyngarden ◽  
Kathleen A. Mar ◽  
Kristie A. Boering ◽  
Jim J. Lin ◽  
Yuan T. Lee ◽  
...  
Keyword(s):  
Exchange Reaction ◽  
Reactive Scattering

3D Linear Identification of Mechanical Joint Using FRF Decoupling and Inverse Structural Modification Methods

2021 ◽  
Author(s):  
Hossein Soleimani ◽  
Ender Cigeroglu ◽  
H. Nevzat Özgüven
Keyword(s):  
Structural Modification ◽  
Model Parameters ◽  
Engineering Structures ◽  
Bolted Connection ◽  
Decoupling Method ◽  
Beam Elements ◽  
Method Formulation ◽  
Joint Parameters

Abstract Mechanical connections such as bolts and rivets are inevitable in most engineering structures and may significantly affect the dynamic behavior of the structures. Therefore, modeling a joint simply and accurately is essential for assembled structures. On the other hand, the most important step is the determination of these joint model parameters which will be used in the calculation of dynamic response of assembled structures. For this purpose, in this paper, FRF Decoupling Method (FRF-DM), proposed in an earlier study for bolted beam connections is extended in two ways: Firstly, the bolt model proposed for 2D beam elements is extended to 3D finite element models of structural systems, and thus the dynamics of a bolted connection is modeled as an equivalent 6 × 6 complex stiffness matrix including linear and torsional stiffnesses. Secondly, FRF-DM is extended to include measurements at connection degrees of freedoms, which improves the accuracy in identification. Several equations for the identification of joint parameters are derived utilizing FRF-DM. Joint parameters are calculated by using developed FRF decoupling relations, as well as by employing a recently developed method called Inverse Structural Modification Method (ISMM) in a case study consisting of two beams connected by a 6 × 6 stiffness and viscous damping matrices. The accuracy and the advantages of each method/formulation are discussed by using the case study based on simulated experiments.

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