使用粘合剂粘合的短光束曲试验对粘合剂接头的基于能量的断裂特征
Amir Reza Fatolahi1, Reza Mohsenikia1, Hadi Khoramishad2
1Adhesively bonded and sandwich structures research laboratory, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, 16846-13114, Iran.
Scientific reports
|October 31, 2025
概括
粘合式短束曲 (ABSBB) 试验,结合基于合规性束方法 (CBBM),提供了一种具有成本效益的方法,可以在不需要裂纹长度测量的情况下测量粘合式接头中的断裂能量.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 断裂力学 断裂力学 断裂力学
背景情况:
- 在粘合剂关节中表征Mode-I断裂对于结构完整性至关重要.
- 标准化测试,如双梁 (DCB) 测试,可能是复杂和昂贵的.
- 需要开发更简单,更实惠的骨折表征方法.
研究的目的:
- 为了评估粘合式短束曲 (ABSBB) 试验的Mode-I断裂特性.
- 使用基于合规的光束方法 (CBBM) 来从ABSBB测试中推导断裂参数.
- 为了将ABSBB测试与标准化DCB测试进行粘合性关节骨折分析.
主要方法:
- 粘合式短束曲 (ABSBB) 试验用于破裂的矩形粘合接头.
- 基于合规的光束方法 (CBBM) 用于从负载位移数据中推导应变能量释放率 (SERR),R曲线和断裂能量.
- 凝聚性区域建模用于模拟ABSBB和DCB测试进行比较分析.
主要成果:
- 与CBBM相结合的ABSBB测试准确地确定了断裂能量,而不需要测量裂长度.
- 仅从负载位移数据中成功计算了SERR,R曲线和断裂能量.
- 来自ABSBB测试的断裂能量值与DCB测试的值有很好的相关性.
结论:
- 与CBBM相结合的ABSBB测试是一种可靠,经济有效和简单的方法,用于评估粘合剂接头的断裂能量.
- 这种方法简化了断裂特征,减少了对先进仪器和复杂程序的需求.
- 这些发现支持使用ABSBB标本来评估矩形形状边缘纹组件的断裂行为.
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