关于3D打印柱状关节试验块单轴压缩机械性能的研究
Zhenbo Xu1, Zhende Zhu2,3, Chao Jiang2
1College of Civil Engineering and Transportation, Hohai University, Nanjing, 210098, China. 200204040003@hhu.edu.cn.
Scientific reports
|December 27, 2024
概括
这项研究使用3D打印的烯酸丁乙烯 (ABS) 骨架研究了柱状关节岩质量 (CJRM). 结果显示,由于骨架的高异构性和减少强度,ABS降解会影响机械性能.
科学领域:
- 材料科学 材料科学 材料科学
- 地质力学 地质力学
- 土木工程 土木工程是指土木工程.
背景情况:
- 柱状联合岩层 (CJRM) 是常见的地质构造.
- 了解它们的机械行为对于工程应用至关重要.
- 3D打印为创建受控实验模型提供了新的方法.
研究的目的:
- 为了研究3D打印的烯丁乙烯 (ABS) 骨架的CJRM测试块的机械性能和故障模式.
- 分析关节骨俯冲角度和紫外线 (UV) 衰老对CJRM行为的影响.
- 评估ABS材料降解对测试块整体性能的影响.
主要方法:
- 柱状关节岩质量 (CJRM) 测试块使用3D打印的ABS骨架,水泥砂制造,并经过紫外线老化.
- 单轴压缩测试是在不同入角的标本上进行的.
- 分析包括强度,变形,能量吸收和故障模式.
- 紫外线老化对ABS特性的影响通过黄色指数和红外光谱学进行了评估.
主要成果:
- CJRM表现出高异构性;单轴压力强度和弹性模量显示出"U"形趋势与俯冲角,而弹性应变能量显示出"V"形趋势,最小值在45°.
- 观察到的故障模式包括剪切,分裂和混合类型.
- 该ABS骨架降低了固体测试块的强度和弹性模量,在75°俯冲角度下降幅度最为显著.
- 增加的紫外线老化时间导致了ABS强度和变形参数的降低,同时增加了黄色和红外光谱峰值区域,表明材料降解.
结论:
- 烯丁乙 (ABS) 骨架的存在显著影响了柱状联合岩质 (CJRM) 模型的机械性能和故障机制.
- 关节骨架的俯冲角度是决定CJRM强度和变形特征的关键因素.
- 紫外线的老化会降解ABS材料,对CJRM试验块的机械性能产生负面影响,强调在设计中需要考虑材料的耐用性.
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