Next Article in Journal
Increasing the Performance of Vacuum Membrane Distillation Using Micro-Structured Hydrophobic Aluminum Hollow Fiber Membranes
Previous Article in Journal
Thermal Optimization of Horizontal Tubes with Tilted Rectangular Fins under Free Convection for the Cooling of Electronic Devices
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Appl. Sci. 2017, 7(4), 440; doi:10.3390/app7040440

Fatigue Assessment of Explosive Bolts Considering Vibration of Fixtures

1
Department of Aerospace Engineering, Harbin Institute of Technology, Harbin 150001, China
2
Beijing Institute of Aerospace System Engineering, China Academy of Launch Vehicle Technology, Beijing 100076, China
3
Department of Propulsion Engineering, Xiamen University, Xiamen 361005, China
*
Authors to whom correspondence should be addressed.
Received: 9 November 2016 / Revised: 13 March 2017 / Accepted: 20 March 2017 / Published: 3 April 2017
(This article belongs to the Section Energy)
View Full-Text   |   Download PDF [7549 KB, uploaded 6 April 2017]   |  

Abstract

In order to comprehensively evaluate the safety and reliability of a missile, this paper gives a process of how to perform fatigue assessment for release devices—such as explosive bolts—considering road roughness during its carrying on different classes of roads. Firstly, displacement power spectral density (PSD) function is used to fit models of road surfaces of Class A, C, and E. Taking the surface models as simulations, multi-body dynamics analyses with code ADAMS are performed to obtain acceleration responses of different points on the missile. Loading these accelerations, the corresponding stress distribution of explosive bolts is achieved with FEM code ABAQUS. These loads are counted by rainflow method. Finally, constant life curves with different survival rates are employed to get the S-N curves at different stress ratios and stress concentration coefficients, and fatigue lives of explosive bolts are assessed based on the stress-life method. Afterward, the effect of pretension force on the vibration load is obtained. This paper provides a fatigue evaluation procedure for release devices, which is helpful to raise the reliability of release devices for both design and service procedures. View Full-Text
Keywords: explosive bolt; fatigue assessment; fatigue life; stress-life method explosive bolt; fatigue assessment; fatigue life; stress-life method
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Wang, L.; Zhao, Y.; Gang, T.; Chen, L.; Tian, H. Fatigue Assessment of Explosive Bolts Considering Vibration of Fixtures. Appl. Sci. 2017, 7, 440.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top