Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


ucin1337715163.pdf (583.03 KB)

ETD Abstract Container

Abstract Header

Residual stress prediction in laser shock peening based on finite element analysis and mechanical threshold stress model

Tophkhane, Chinmay J.
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337715163

Abstract Details

2012, MS, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.
This thesis focuses on a physically based strain rate dependent plasticity model known as the Mechanical Threshold Stress (MTS) model proposed by Follansbee and Kocks. The objective is to develop an algorithm based on the tangent modulus method to resolve the constitutive equation represented by the MTS model and use it to analyze the material response under laser shock peening for the Ni alloy INCONEL 718 (IN718). A user defined subroutine has been developed and integrated with commercial software LS-DYNA. A parametric study is carried out to study the influence of various model parameters on the predicted residual stresses. The developed model is then applied in the study of residual stresses imparted on INCONEL 718 induced by laser shock peening (LSP) process. Finite element analysis is performed for the case of plate made of INCONEL 718 and the residual stress predictions are compared with experimental results. The model predictions are found to be in good agreement with the experimental results. To the best of author’s knowledge, this is the first time that an MTS model has been developed for IN 718 with an integrated approach.
Dong Qian, PhD (Committee Chair)
Janet Dong, PhD (Committee Member)
Vijay Vasudevan, PhD (Committee Member)
55 p.
Mechanics
laser shock peening; mechanical threshold stress; ; ; ; ;

Recommended Citations

Citations

  • Tophkhane, C. J. (2012). Residual stress prediction in laser shock peening based on finite element analysis and mechanical threshold stress model [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337715163

    APA Style (7th edition)

  • Tophkhane, Chinmay. Residual stress prediction in laser shock peening based on finite element analysis and mechanical threshold stress model. 2012. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337715163.

    MLA Style (8th edition)

  • Tophkhane, Chinmay. "Residual stress prediction in laser shock peening based on finite element analysis and mechanical threshold stress model." Master's thesis, University of Cincinnati, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337715163

    Chicago Manual of Style (17th edition)

ucin1337715163
742
© 2012, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.