Analysis and optimization on the explosive impact response of bolt joint structure

Author

Jin, Jing ; Wu, Xinyue

Author_Institution

Mech. Eng. Dept., Naval Univ. of Eng., Wuhan, China

fYear

2009

fDate

20-24 July 2009

Firstpage

1018

Lastpage

1022

Abstract

The blast load response of precise bolt finite element model was studied by LS-DYNA software. Firstly, the initial stress of thread was added by the dropping temperature method. Then the dynamic response and deformation damage of the bolt model were calculated by the elastic-plastic constitutive material equation and surface-surface contact algorithm, which calculating models including bolt joint and bolt-nut joint with and without initial stress. The concerned position was found and a simple damage model of the thread joint was created based on the calculated results. Finally optimization schemes for the bolt joint to resist impact were put forward after analyzing the results. These schemes provided important instructions for the structural design of impact resistance.

Keywords

design engineering; detonation waves; dynamic response; elastoplasticity; explosives; fasteners; finite element analysis; impact (mechanical); joining processes; maintenance engineering; mechanical contact; optimisation; plastic deformation; precision engineering; stress effects; structural engineering; LS-DYNA software; blast load response; bolt-nut joints; damage impact resistance; deformation damage; dropping temperature method; dynamic response; elastic-plastic constitutive material equation; explosive impact response; finite element model; optimization; precise bolt joint structure; structural design; surface-surface contact algorithm; thread joint stress effects; Deformable models; Equations; Explosives; Fasteners; Finite element methods; Joining materials; Resists; Stress; Temperature; Yarn; LS-DYNA; bolt joint; impact response; optimization;

fLanguage

English

Publisher

ieee

Conference_Titel

Reliability, Maintainability and Safety, 2009. ICRMS 2009. 8th International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4903-3

Electronic_ISBN

978-1-4244-4905-7

Type

conf

DOI

10.1109/ICRMS.2009.5269988

Filename

5269988