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<p>The research addresses the high-velocity impact damage of aluminium 6061 (Al 6061) plates at elevated temperatures experimentally and numerically. The tests were conducted using a single-stage gas gun setup coupled with thermal setup. The effects of thickness and repeated impacts are discussed initially, and then the effects of elevated temperatures on the high-velocity impacts are discussed. The experimental studies were carried out with impact at a constant velocity of 88&#xa0;m/s and the resulting impact energy of 260&#xa0;J. The finite element analysis was carried out using the Johnson–Cook material model in LS-DYNA software. The experimental results for dent diameter and central deflection of Al 6061 plates under repeated impacts at room temperature are presented initially. Further, results obtained for high-velocity impacts at elevated temperatures are presented. The experimental and numerical investigation results were compared, where it was noted that the central deflection increases with increasing temperature. A 4.7% increment in central deflection was observed at high-velocity impact at 473&#xa0;K compared to the high-velocity impact at 298&#xa0;K.</p>

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Experimental and Numerical Investigation of High-Velocity Impacts on Aluminium 6061 Plates under Thermal Environment

  • 期刊论文

  • 发表日期：

    2025年7月20日

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  • S. Vignesh,
  • D. Muniraj,
  • V. M. Sreehari

摘要

The research addresses the high-velocity impact damage of aluminium 6061 (Al 6061) plates at elevated temperatures experimentally and numerically. The tests were conducted using a single-stage gas gun setup coupled with thermal setup. The effects of thickness and repeated impacts are discussed initially, and then the effects of elevated temperatures on the high-velocity impacts are discussed. The experimental studies were carried out with impact at a constant velocity of 88 m/s and the resulting impact energy of 260 J. The finite element analysis was carried out using the Johnson–Cook material model in LS-DYNA software. The experimental results for dent diameter and central deflection of Al 6061 plates under repeated impacts at room temperature are presented initially. Further, results obtained for high-velocity impacts at elevated temperatures are presented. The experimental and numerical investigation results were compared, where it was noted that the central deflection increases with increasing temperature. A 4.7% increment in central deflection was observed at high-velocity impact at 473 K compared to the high-velocity impact at 298 K.