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Abstract
Abstract This study investigates the response of cylindrical metal bars, acting as plungers, subjected to close-in blast loads and compressed against cylindrical metal bars placed at the opposite end. Utilizing ABAQUS software, the study aims to replicate high-speed dynamic events related to impact and stress wave propagation. Full-scale experimental tests were conducted to validate the simulation results, focusing on deformation behavior and dimensional changes. Findings indicate that plunger response varies with length, with shorter plungers allowing more energy to propagate through, reaching further toward the target. The maximum stress was observed at the plunger surface upon explosion, with deformation patterns resembling the mushrooming effect seen in the Taylor impact test. The simulations showed an average initial stress of 12,512.24 MPa, with a significant stress loss of 89–94% at the rear end, and an additional 50% loss as stress propagated into the target. Validation results demonstrated that the plunger's deformation and target's deformation in the simulation closely matched the experimental data, confirming the accuracy of the simulation model. These results provide valuable insights for designing resilient structures and optimizing manufacturing processes involving blast load compaction. Future research will explore the use of different materials and configurations to further understand stress wave propagation and its effects on material deformation under dynamic loading conditions.
Highlights
Research involving the simulation of blast loading is typically conducted for purposes such as building safety and structural integrity [1]
This study observes the difference in specimen length tested at constant blast load deformation behavior and fracture mode
The Plunger’s blast impact surface has taken on the shape of a mushroom, with no visible cracking. This phenomenon is comparable to the Taylor impact test, in which cylindrical steel projectiles are accelerated and impacted against highstrength steel target plates using a compressed gas gun [27]
Summary
Research involving the simulation of blast loading is typically conducted for purposes such as building safety and structural integrity [1]. Simulations of close-range blast loading will greatly facilitate researchers in understanding how materials and systems react to high-pressure loads These can aid in the development of explosion-resistant materials and systems. It can be used to predict the effect of the explosion on a wide range of structures to evaluate the safety and security of existing structures and to design new structures that are more resistant to blast loading. Even though it is commonly linked with violence and destruction, explosive power can be harnessed for good [3]. This study is part of an initiative to deepen the research of blast load compaction utilizing Plunger as an intermediate material in powder metallurgy and metal compaction
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