Stress based topology optimization of axial tubes under impact to improve energy absorption

Open Access

Year : 2024 | Volume : | : | Page : –
By

Prashant Manvi

Fareen Nizami

Anandtheertha M R

Srikanth H V

  1. Department of Aeronautical Engineering, Nitte Meenakshi Institute of Technology, Bangalore Karnataka India
  2. Department of Aeronautical Engineering, Nitte Meenakshi Institute of Technology, Bangalore Karnataka India
  3. Department of Aerospace Engineering, RV College of engineering, Bangalore Karnataka India
  4. Department of Aeronautical Engineering, Nitte Meenakshi Institute of Technology, Bangalore Karnataka India

Abstract

The present study is aimed at designing a stress constrained topology optimized tube to improve the specific energy absorption (SEA) and reduce the peak crushing force. The research was aimed to develop an axial tube to withstand high impact loads thus improving the crash worthiness of the structure. Crash analysis of a 3D deformable circular tube having different thickness of 0.5 mm, 1 mm, 1.5 mm and 2 mm with a constant inner diameter and length sandwiched between two square rigid planar shell plates was performed. SEA and Peak crushing force (PCF) were computed post the crash analysis. Stress based topology optimization was then carried out on a prismatic tube by varying the Factor of Safety from 1.2 to 2 in steps of 0.2 using the SIMP algorithm on a tube with the highest SEA. Crash analysis was carried out post the optimization process in a similar manner by varying the thickness. SEA and PCF were computed, and results show that the optimized tube with the thickness of 1 mm absorbs 933.53 J of energy with a SEA of 27.22 J/g when compared to the prismatic tube (945.74 J) of the same thickness with a SEA of 17.06 J/g.

Keywords: SEA- Specific Energy Absorption, EA- Energy Absorption, PCF- Peak Crushing Force, MCF- Mean Crushing Force, SIMP method- Solid Isotropic Material with Penalization method, FOS- Factor of Safety.. UAV, GPS, Autodesk flow, Inertial Measurement Unit (IMU)

How to cite this article: Prashant Manvi, Fareen Nizami, Anandtheertha M R, Srikanth H V. Stress based topology optimization of axial tubes under impact to improve energy absorption. Journal of Polymer and Composites. 2024; ():-.
How to cite this URL: Prashant Manvi, Fareen Nizami, Anandtheertha M R, Srikanth H V. Stress based topology optimization of axial tubes under impact to improve energy absorption. Journal of Polymer and Composites. 2024; ():-. Available from: https://journals.stmjournals.com/jopc/article=2024/view=145848

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Ahead of Print Open Access Original Research
Volume
Received January 3, 2024
Accepted January 19, 2024
Published May 13, 2024