An Approach for Modeling Shock Propagation through a Bolted Joint Structure
Document Type
Conference Proceeding
Publication Date
7-1-2020
Publication Title
16th International LS-DYNA Conference
First page number:
1
Last page number:
8
Abstract
Impact loading is typically characterized by a relatively large load happening over an extremely short duration and inducing broad range of vibration frequencies. Standard design approaches of bolted joints based on static or quasi-static criteria may not be effective under these conditions. This study focused on simulating a drop-weight tower experiment where a free-falling mass impacted a target plate, which was bolted to a cylindrical structure. An accelerometer was used to record transmitted acceleration to the cylindrical structure. An approach for simulating the shock propagation was proposed using LS-DYNA ® Explicit finite element code. To reduce computational time, thread was not included. Instead, bolts were represented as cylinders with cross-sectional areas equal to the tensile stress area of the bolts. The results showed good agreement between the finite element and experimental results.
Keywords
Impact loading; Vibration frequencies; Shock propogation; LS-DYNA
Disciplines
Automotive Engineering | Engineering
Language
English
Repository Citation
Shojaei, P.,
Trabia, M.,
Otoole, B.,
Higdon, J.
(2020).
An Approach for Modeling Shock Propagation through a Bolted Joint Structure.
16th International LS-DYNA Conference
1-8.