Computational analysis of failure mechanisms in composite sandwich space structures subject to cyclic thermal loading

2021 ◽  
Vol 256 ◽  
pp. 113086
Author(s):  
K.R. Venkatesan ◽  
T. Stoumbos ◽  
D. Inoyama ◽  
A. Chattopadhyay
Keyword(s):  
Thermal Loading ◽  
Computational Analysis ◽  
Failure Mechanisms ◽  
Space Structures ◽  
Cyclic Thermal Loading ◽  
Composite Sandwich

Approximate method for the analysis of components undergoing ratchetting and failure

1998 ◽  
Vol 33 (1) ◽  
pp. 55-65 ◽  
Author(s):  
J Lin ◽  
F P E Dunne ◽  
D R Hayhurst
Keyword(s):  
Approximate Method ◽  
Mechanical Loading ◽  
Thermal Loading ◽  
Cyclic Plasticity ◽  
Processing Unit ◽  
Computationally Efficient ◽  
Element Analysis ◽  
Cyclic Thermal Loading ◽  
Central Processing ◽  
Practical Design

An approximate method has been presented for the design analysis of engineering components subjected to combined cyclic thermal and mechanical loading. The method is based on the discretization of components using multibar modelling which enables the effects of stress redistribution to be included as creep and cyclic plasticity damage evolves. Cycle jumping methods have also been presented which extend previous methods to handle problems in which incremental plastic straining (ratchetting) occurs. Cycle jumping leads to considerable reductions in computer CPU (central processing unit) resources, and this has been shown for a range of loading conditions. The cycle jumping technique has been utilized to analyse the ratchetting behaviour of a multibar structure selected to model geometrical and thermomechanical effects typically encountered in practical design situations. The method has been used to predict the behaviour of a component when subjected to cyclic thermal loading, and the results compared with those obtained from detailed finite element analysis. The method is also used to analyse the same component when subjected to constant mechanical loading, in addition to cyclic thermal loading leading to ratchetting. The important features of the two analyses are then compared. In this way, the multibar modelling is shown to enable the computationally efficient analysis of engineering components.

Mechanical Reliability of Photovoltaic Cells under Cyclic Thermal Loading

2019 ◽  
Vol 49 (1) ◽  
pp. 59-71
Author(s):  
Dipali Sonawane ◽  
Praveen C. Ramamurthy ◽  
Praveen Kumar
Keyword(s):  
Thermal Loading ◽  
Photovoltaic Cells ◽  
Mechanical Reliability ◽  
Cyclic Thermal Loading

scholarly journals Thermal deformation of gold nanostructures and its influence on surface plasmon resonance sensing

2020 ◽  
Vol 2 (3) ◽  
pp. 1128-1137
Author(s):  
Hyun-Tae Kim ◽  
Mayank Pathak ◽  
Keshav Rajasekaran ◽  
Ashwani K. Gupta ◽  
Miao Yu
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Thermal Deformation ◽  
Thermal Loading ◽  
Gold Nanostructures ◽  
Cyclic Thermal Loading

The deformation of lithographic planar gold nanostructures under cyclic thermal loading and its influence on surface plasmon resonance sensing are investigated.

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