对于丝状伤复合的三维热化学机械合治愈分析
Linjiao Lu1, Shengsheng Huan1, Mengkai Lu1
1Zhejiang-Italy Joint Lab for Smart Materials and Advanced Structures, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China.
Polymers
|June 27, 2024
概括
在碳纤维复合材料外中固化收缩应变显著导致剩余应力和应变. 了解这种树脂行为对于制造无缺陷复合结构至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 聚合物化学 聚合物化学
背景情况:
- 基于碳纤维树脂的复合材料对于制造复合材料外至关重要.
- 固化过程可以诱导温度和固化度梯度,导致热应变.
- 固化过程中的树脂固化收缩是残余应力和应变的主要原因.
研究的目的:
- 为复合材料外建立一个三维热化学机械合固化模型.
- 研究复合材料外固化的温度,固化程度,残余应力和应变的演变.
- 确定影响残余压力和应变产生的主要因素.
主要方法:
- 通过固化动态和拉伸性测试,获得HCM-2184树脂的固化性能参数和弹性模量.
- 使用CHILE (α) 弹性模型开发了一种结合热化学机械固化模型,该模型包含热释放和收缩.
- 数字模拟了复合材料外的固化过程.
主要成果:
- 该研究证实了测试树脂的自催化反应性质.
- 在固化过程中,薄复合材料外内的热积累被发现是最小的.
- 树脂固化收缩被确定为残余应力和应变生成的重要因素.
结论:
- 树脂固化收缩是复合材料外中残余应力和应变的发展的一个关键因素.
- 开发的模型提供了对复合材料外复杂固化行为的见解.
- 对树脂收缩的准确建模对于预测和减轻复合材料制造中的残余应力至关重要.
相关概念视频
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In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
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01:15Thin-Walled Hollow Shafts
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