Design Optimization of Shock Mounts Subjected to an Underwater Blast Wave

Design Optimization of Shock Mounts Subjected to an Underwater Blast Wave

Sivaramakrishnan, Siddharth (TU Delft Mechanical, Maritime and Materials Engineering)

Langelaar, M. (mentor)
van den Boom, S.J. (mentor)
den Besten, J.H. (graduation committee)
Valiya Valappil, S. (graduation committee)

Delft University of Technology

Mechanical Engineering | Precision and Microsystems Engineering

2020-09-29

Shock mounts are crucial components in reducing the transmissibility of a shock or impact, thereby protecting the objective system. Such shock mounts are application-specific and need a redesign for specific uses. This study establishes a transient nonlinear finite element optimization procedure to design a shock mount for withstanding an underwater blast wave. The work showcases the analysis of two design concepts. The first design demonstrates average acceleration transmissibility of 5.51e-3. The second design exploits the phenomenon of reflection of waves at an interface. This design is unique, promising a factor 3.263 lower average transmissibility than the first design which is similar without the metal interface. The study also details the modeling and analysis of both shock mount designs using 2D axisymmetric and 3D transient nonlinear finite element analyses. The results of both these analyses were comparable, making a 2D study efficient and reliable in the analysis and optimization of shock mounts.

Shock Mount
Nonlinear Transient Finite Element Analysis
Explicit Dynamics
Abaqus
Hyperelastic
Polynomial Order 3 Material Model
Neoprene
BOBYQA
Structural Shape Optimization
Taylor Flat Plate
Underwater Explosion
Wave Interface Interaction

http://resolver.tudelft.nl/uuid:d044befa-b434-4b3d-a964-cf09d92d55f1

Student theses

master thesis

© 2020 Siddharth Sivaramakrishnan