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在线丝复合压力容器中CFRP堆叠序列的交叉尺度建模:在平面和层间均化分析
Ziqi Wang1, Ji Shi1, Xiaodong Zhao2,3
1National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
这项研究引入了一种用于分析复合压力容器的跨尺度均化方法,显著降低了计算成本,同时保持了预测结构性能和故障的准确性.
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:
- 复合式压力容器提供轻量级,高性能特征.
- 在复合材料中分析线绕 (FW) 模式带来了计算挑战.
研究的目的:
- 为碳纤维增强塑料 (CFRP) 层在FW复合压力容器中开发交叉规模建模方法.
- 调查铺设序列对船舶性能的影响,并降低计算费用.
主要方法:
- 开发了一种同质化方法,用于CFRP层的交叉规模建模.
- 创建了一个FW交叉波浪代表体积元件 (RVE).
- 对六个布置序列进行了比较,对,完全均化和部分均化模型进行了比较.
主要成果:
- 部分同质化准确地预测了应力分布和爆压 (与层模型的偏差为7.56%).
- 同质化对聚胺层的疲劳寿命的影响微不足道 (0.28%的变化).
- 该方法在不同的建模方法中验证了结构位移.
结论:
- 拟议的跨度均化框架为模拟FW复合压力容器提供了一种高效和准确的方法.
- 这种方法平衡了计算效率与多尺度模拟所需的准确性.
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