使用数值模拟和实验测试来确定盲接头的机械性能
Martin Beber1, Martin Stejskal1, Frantisek Sedlacek1
1Faculty of Mechanical Engineering, University of West Bohemia, Univerzitni 2732/8, 301 00 Pilsen, Czech Republic.
Materials (Basel, Switzerland)
|January 25, 2025
概括
这项研究测试了钢的盲钉接头,揭示了强度和故障模式的材料差异. 一种新方法校准了模拟,以实现航空航天和汽车应用中可靠的联合设计.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 结构分析 结构分析
背景情况:
- 盲钉为航空航天和汽车行业的结构应用提供了高效的单面组装.
- 钢板是常见的,但接头性能因钉材料和负载条件而异.
- 了解关节的行为对于确保结构完整性和耐腐蚀性至关重要.
研究的目的:
- 为了研究钢盲钉接头在剪切和正常负载下的拉伸性能.
- 为了比较钢和不钢盲钉的行为.
- 开发和验证用于校准有限元分析 (FEA) 模型的方法,用于钉接头设计.
主要方法:
- 在两种钉类型 (St/St和A2/A2) 上使用DX51D+Z275钢板进行单环切割,双环切割和正常负载试验的实验测试.
- 使用定制设备来控制强力应用,模拟实际负载.
- 使用有限元分析 (FEA) 来进行模拟,并使用ANSYS OptiSLang对实验数据进行验证.
主要成果:
- 在钢和不钢钉之间观察到负载能力和故障模式的明显差异.
- 实验数据为验证FEA模拟提供了基础.
- 校准方法在FEA和实验结果之间达到了92.53%的一致性,提高了模拟可靠性.
结论:
- 材料选择显著影响钢的盲钉接头性能.
- 拟议的FEA校准方法提高了钉关节设计的数值模拟的准确性.
- 结果为评估和优化工程应用中的盲钉连接提供了实际建议.
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