厚度和强度对定制钢结构中的塑料不稳定性的影响
Rihuan Lu1,2, Shoudong Chen3, Xiaogong Wang4
1National Engineering Research Center for Equipment and Technology of Cold Rolled Strip, Yanshan University, Qinhuangdao, 066004, Hebei, People's Republic of China. lrh@ysu.edu.cn.
Scientific reports
|July 4, 2024
概括
这项研究开发了一个数学模型来分析厚度和机械性能变化如何影响定制空板 (TRB) 和定制管 (TRT). 研究结果显示,这些变化对结构性能和塑料不稳定性有重大影响,指导材料设计以提高耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 计算力学 计算力学 计算力学
背景情况:
- 定制制空白 (TRB) 和定制制管 (TRT) 是具有不同空间性能的先进材料.
- 了解这些变异对机械性能的影响对于优化它们在工程应用中的使用至关重要.
- 现有的模型可能无法完全捕捉连续性质梯度对结构行为的复杂相互作用.
研究的目的:
- 开发和应用一个数学模型,研究连续厚度和TRB和TRT的机械性质变化的影响.
- 量化这些变化如何影响应力分布,应变局部化和塑料不稳定性.
- 引入和使用"等效强度"指标来评估结构性能和指导材料设计.
主要方法:
- 开发一个综合分析和数值技术的综合数学模型.
- 模拟材料厚度和机械性能持续变化的模拟.
- 对应力和应变分布的分析,以确定塑性不稳定性的关键区域.
- 计算和应用一种新的"等效强度"指标.
主要成果:
- 厚度和机械性能的持续变化显著调节了TRB和TRT中的应力分布和应变局部化.
- 这些变化引发了一系列塑性不稳定性行为,影响整体结构完整性.
- "相当强度"指标有效量化了结构性能,突出了战略性材料分布的重要性.
- 该模型提供了各种负载条件下的定制结构的机械反应的见解.
结论:
- 该研究成功地模拟了性能梯度对定制制材料的影响.
- 这些发现提供了对机械反应的更深入的理解,这对于设计具有定制性质的工程材料至关重要.
- 这项研究通过提供一个框架来优化TRB和TRT的性能和耐用性,从而推进材料工程.
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