Scholarlink

<p>In defence applications, effective underbody protection for armoured fighting vehicles (AFVs) against blasts is vital, yet traditional monolithic materials are burdened by excessive weight. To address this, a modular approach using A286 micro metallic honeycomb and bcc lattice structures was devised through the LPBF process and AI statistical methods. The structures share dimensions of 24×20×30 mm<sup>3</sup> with 2 mm wall thickness. Ultrasound imaging post heat treatment revealed reduced flaws, enhancing internal structure and mechanical properties. Compression tests demonstrated honeycomb micro lattice’s 6.4 %, 14.02 %, 7.09 % attenuation in compressive residual stress vs. pre-compression, bcc micro lattice before and after compression. Bcc micro lattice displayed 0.74 %, 7.63 %, 7.46 % stress reduction vs. honeycomb and bcc micro lattices before and after compression. Honeycomb micro lattice exhibited superior deformation resistance with lower strain values pre and post compression. A286 honeycomb micro lattice displayed improved stress distribution, minimized displacement under higher loads, enhancing AFV blast mitigation durability.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Comparative analysis of metallic honeycomb and bcc micro lattice structures for armoured fighting vehicles

  • 期刊论文

  • 发表日期：

    2025年3月3日

查看全文
  • B. Veera Siva Reddy,
  • Ameer Malik Shaik,
  • C. Chandrasekhara Sastry,
  • J. Krishnaiah,
  • B. Ramakrishna

摘要

In defence applications, effective underbody protection for armoured fighting vehicles (AFVs) against blasts is vital, yet traditional monolithic materials are burdened by excessive weight. To address this, a modular approach using A286 micro metallic honeycomb and bcc lattice structures was devised through the LPBF process and AI statistical methods. The structures share dimensions of 24×20×30 mm3 with 2 mm wall thickness. Ultrasound imaging post heat treatment revealed reduced flaws, enhancing internal structure and mechanical properties. Compression tests demonstrated honeycomb micro lattice’s 6.4 %, 14.02 %, 7.09 % attenuation in compressive residual stress vs. pre-compression, bcc micro lattice before and after compression. Bcc micro lattice displayed 0.74 %, 7.63 %, 7.46 % stress reduction vs. honeycomb and bcc micro lattices before and after compression. Honeycomb micro lattice exhibited superior deformation resistance with lower strain values pre and post compression. A286 honeycomb micro lattice displayed improved stress distribution, minimized displacement under higher loads, enhancing AFV blast mitigation durability.